Nissan 370Z Forum

Nissan 370Z Forum (http://www.the370z.com/)
-   Forced Induction (http://www.the370z.com/forced-induction/)
-   -   GTM Performance Engineering: MHI Twin Turbo Official Release (http://www.the370z.com/forced-induction/68491-gtm-performance-engineering-mhi-twin-turbo-official-release.html)

elperuano 03-21-2013 12:37 PM

U could do it. Jus have patience, beer and more patience. You'll need to take breaks and know when to walk away n try again later.

Z370Z011 03-21-2013 12:51 PM

good thing my neighbor is a certified mechanic with literally every tool you can think of.. some beers, pizza, and 100$ will make him happy haha :D

deuce189 03-21-2013 01:29 PM

Whats the window's on all the different Tiers for the group buys?

Mike@GTM 03-21-2013 01:44 PM

Quote:

Originally Posted by Akmcmahon (Post 2223826)
I'm not as knowledgeable on these things so forgive my questions if they are obvious. Is there a difference in spool time/latency on each of the turbos? 16g, 18g, and 20g? I would think there would be but don't really know.

For the turn-key setup, is it good to go and safe with a stock setup?

What boost is the turn-key mapped at?

For the financing option 2, when would the 25% down be required? How long from when you get the group buy list together are you collecting?

Thanks for your efforts in making what looks to be an amazing product. This has made me seriously reconsider my timing on upgrades.

Yes, there is a difference in spool between the three turbo options. With bigger turbos, you make more power at the expense of responsiveness.

This kit was designed from the outset to be very appropriate for the stock engine. Our Turn-Key kits are supplied specifically for installation on a stock engine.

One thing I'd like to mention is that you really want to keep the engine stock since it is the most reliable setup you can get. Purchasing a turbo kit that is designed to run on the stock engine is really the best forced induction decision you can make. 500whp is no joke on these cars and the fact that the stock engine can sustain that level of power for a very long time (60k+) is what is this kit is all about.

In regards to what boost the Turn-Key map is setup for, you need to remember that this is a Blow Through MAF setup. That basically means that it has more to do with mass airflow than boost pressure. Even then, the limiting factor is the factory return-less fuel system. That said, you don't really need to upgrade to a return fuel system until you are making more power than the stock engine can handle in the first place. So, basically, what I'm saying is that our Turn-Key kit with our tune can take you to the limit of what the engine can handle reliably and a little further. So far, that translates to roughly 11 - 12psi of boost.

We are still working out the details for the group buy and will be posting that along with more information on the financing options.

Quote:

Originally Posted by Red_Z (Post 2223889)
Is it possible to post link to the installation manual? Since I am in CA and nothing is legal, I want to see am I able to install/remove the kit by myself, in my garage.

I'm actually still working on the installation manual between answering e-mails, pm's and forum posts. ;) It should be all wrapped up before the kit starts shipping though.

Quote:

Originally Posted by elperuano (Post 2223912)
Great kit! That price will be the selling point

We think that the price is really only part of what will help this kit sell. It's more about the performance/$ that really drives home the value of this kit. It performs extremely well compared to other options and costs substantially less as well. That, is value.

Quote:

Originally Posted by 370zrider (Post 2223916)
I'm also interested in having installation details if this is possible.
I would like to get an installation quote with my local shop.

:rolleyes:

It should take roughly 25 hours for a competent technician to install this kit. Based on your local labor rate, that should give you a good idea of how much it is going to cost you to get it installed if you decide against tackling the install yourself.

Quote:

Originally Posted by rAiN (Post 2224002)
are the clutch upgrade necessary for this kit? I will only be driving around the town with some spirit driving session.
so if i get the numbers right, 6k for the kit + 1k for the tuning + 1-2k for installation?

The need for a clutch upgrade really depends on the health of your stock clutch. If it's hammered pretty hard, it won't last long and you should budget for an upgrade. Otherwise, if you have relatively low mileage on it, it shouldn't be an issue.

As for your numbers, I'm not following your math on that since we've given pretty good indicators on how much it should realistically run. $6k for the Tier 1 into pricing on the Turn-Key kit (no tuning required) + (25 hours * $/hour of shop labor rate) = installed cost.

Quote:

Originally Posted by ZKraken22 (Post 2224115)
Never heard of financing a Turbo/ Sc kit. (I understand people just use a credit card) Does the government know your doing this??

Everybody is gonna be FI now, so many G's/Z's are gonna be turbo'd/SC that people are gonna think Nissan brought back the 300Zx!!

As for the government, it's not an issue. I know it seems so good that it must be illegal, but there's nothing wrong with financing a turbo kit or sound system, house, car, or whatever else you care to finance. lol

deuce189 03-21-2013 03:45 PM

^^^ you can finance mattresses. Them Tempurpedic's can get expensive.

chrischhorn 03-21-2013 04:34 PM

Dyno sheets from the 18g setup yet? I'd like to see the powercurve.

Mike@GTM 03-21-2013 05:02 PM

Quote:

Originally Posted by chrischhorn (Post 2225797)
Dyno sheets from the 18g setup yet? I'd like to see the powercurve.

Here you go:

Here are the 18g's running 11psi of boost on 91 octane:

http://i313.photobucket.com/albums/l...ps2002dc94.jpg

Here are the 18g's running 8psi of boost on 91 octane:

http://i313.photobucket.com/albums/l...ps0ee641da.jpg


As you can see, the 18g's are sized very well and have great area under the curve. This is a very responsive system with great top-end performance.

Footloose301 03-21-2013 05:31 PM

How much power did that top graph get? 11psi on 91octance should be 550whp+?

elperuano 03-21-2013 05:33 PM

550? Naaaa

elperuano 03-21-2013 05:38 PM

These new graphs are of the mustang dyno correct?

Mike@GTM 03-21-2013 05:47 PM

Quote:

Originally Posted by Footloose301 (Post 2225900)
How much power did that top graph get? 11psi on 91octance should be 550whp+?

Quote:

Originally Posted by elperuano (Post 2225916)
These new graphs are of the mustang dyno correct?

Yes, these graphs are with our new Mustang dyno that reads 6.61% lower than our old DynoJet.

Here are the numbers for the top graph:

11psi 91 octane
494.4 RWHP (527.1 Dynojet equivalent)
395.9 RWTQ (422.1 Dynojet equivalent)
(82% more than stock)

G37sHKS 03-21-2013 05:48 PM

Turbo kicks in around 3k RPM.. now that's something nice to see!!

rAiN 03-21-2013 05:50 PM

So does that means, install the kits and im good to go?

G37sHKS 03-21-2013 06:18 PM

Yes, you do need oil cooler first :D

370zrider 03-21-2013 06:30 PM

So these graphs are with 3" test pipes + 3" catback...

Do you have these numbers with 2.5" test pipes + 2.5" catback or a stock configuration?

elperuano 03-21-2013 07:02 PM

I think u mean 3" downpipe. Not test pipe

SAM@GTM 03-21-2013 07:06 PM

Quote:

Originally Posted by 370zrider (Post 2226013)
So these graphs are with 3" test pipes + 3" catback...

Do you have these numbers with 2.5" test pipes + 2.5" catback or a stock configuration?

This car here in this thread has these configurations you are after .

http://www.the370z.com/forced-induct...ctane-7at.html

Sam

370zrider 03-21-2013 07:11 PM

yes, 3" downpipes.

Thank you Sam

SAM@GTM 03-21-2013 07:14 PM

Quote:

Originally Posted by 370zrider (Post 2226072)
yes, 3" downpipes.

Thank you Sam

Your welcome. Here is the dyno graph .


Mike@GTM 03-21-2013 07:48 PM

Quote:

Originally Posted by 370zrider (Post 2224157)
Please post some pictures of the exhaust manifolds!. I think they are not shown on the posted pics at the beginning.

Also, do you have pics of the test car with an oil cooler installed? where can it be fitted?

Well, this car currently has some pre-production parts on it. The exhaust manifold it has is version 2 of our manifold that does not require drilling and tapping the cylinder heads. Here is a picture of it below.


The final version is going to be based on the CAD drawing we posted earlier.

As for your request for pictures of an oil cooler installed with this kit, click on the link below to see my previous post with pictures.
http://www.the370z.com/2215680-post79.html

Quote:

Originally Posted by Dzel (Post 2224369)
Do you think going with a custom 3" exhaust is a good idea?

A 3" true dual turbo-back exhaust is almost always a nice addition, but not a necessity unless your power goals call for it.

Quote:

Originally Posted by HighLatency (Post 2224375)
What kind of numbers could you expect with 2.5" test pipes and a 2.5" catback, but on 93 octane? I assume that would only work with the 16g kit?

You can make 500whp with that combination all day long...with either the 16g's or 18g's with 2.5" or 3" exhaust.

Quote:

Originally Posted by N8GTOL (Post 2224610)
Is matte black intake piping an option on these kits? What would the additional fee be for this option?

It looks like the dyno numbers are for 18gs with external wastegates. What other supporting exhaust mods were on the car? TP's and Catback? Sorry if I missed this in another post.

Are these dyno numbers with the new header design shown in the CAD screen shots in the teaser post?

Any upcoming or current installs with 16gs and internal wastegates? Really interested in seeing a dyno graph for this particular situation (i.e. replicate a CARB legal install...pending CARB approval of course). I suspect the numbers will be slightly lower (which is fine by me) just curious to see the graphs. Please also show AFR and boost vs RMP.

The intercooler plumbing out of the front mount intercoolers shown on the red Z looks different than the IC's shown in the layout photos. Which design is the more recent?

California is quickly becoming TT kit mecca for the 370z...this is awesome but we need more CARB love from our CA turbo vendors. I know you guys (and competitors) are working hard on this and I really hope it comes through for both shops in the next year or so. If it does, then your market will expand faster than you can imagine.

Serious props for making a more affordable TT kit from a reputable Z boost kit company.

Yes, we offer our pipes done in gloss black for $240. We can have other, custom colors done, but they are generally more expensive and not always readily available.

The test car with 18g's has our 3" downpipes with external wastegates and our 3" cat-back exhaust. The dyno results are with our version 2 pre-production manifold that does not require drilling and tapping the cylinder head. We will be doing some additional testing with our upcoming manifold you saw the CAD drawings for once we have the pre-production versions of those in hand.

As for the 16g install, we have a car here courtesy of Nixlimited that is getting that setup. Stay tuned for results on that.

The intercooler setup on the red Z was necessary to clear the hood latch support brackets the Z has. The G37 doesn't have those support brackets and can therefore support the intercooler version you saw in the CAD drawings and layout pictures without modification. That said, we developed new hood latch support braces that gives us an additional 2" of clearance so we can run the same intercoolers on both the G37 and 370Z while supporting the hood latch properly. In addition, the extra clearance allows us to run a wider, taller core on the 370Z than what the red Z currently has. The red Z currently has 10" x 10" x 3" intercooler cores while the production cores with the new support braces are 12" x 12" x 3" cores. Also, the new end-tanks are going to be polished, cast aluminum tanks as opposed to the sheet metal prototype end tanks you see in the pictures of the red Z.

Here is a picture of the support bracket I'm talking about:


As far as CARB approval on this kit goes, we will be going after that as soon as we're finished with CARB approval on the 370Z Supercharger kit.

Quote:

Originally Posted by Chemy (Post 2225264)
I got married about 10 months ago. She knew what she was getting into. I told her I was going to buy this kit and she gave me a hard time but finally gave me a "whatever", thats good enough for me :happydance:

Now the question is, I am mechanicly inclined and have a decent tool set, not a full set of everything by any means. Can I install this myself on jack stands with the engine in? Hrm... Thoughts?

Yes, that shouldn't be an issue and people have installed our Garrett based turbo kits in their garages on jack stands.

Footloose301 03-21-2013 07:59 PM

Can't. Wait.

Ipl 370gt 03-21-2013 08:44 PM

Quote:

Originally Posted by SAM@GTM (Post 2226081)
Your welcome. Here is the dyno graph .


Isn't this the Dyno from the IPL?

tower74 03-21-2013 08:56 PM

Thanks again Mike!! I'm sure there are a few more things I may need to add to that list but I can't wait! Such as, powder coating the pipes black.

SS_Firehawk 03-21-2013 09:28 PM

Well, subbing again, my random fake cursing was removed haha. A lot of good info in here. Are these the same intercoolers on the twin SC's as well? They look the same.

Dzel 03-21-2013 09:51 PM

The intercoolers on the red car in the picture are not the same on the picture of the kit. Is there a rain fir this

UruZai 03-21-2013 10:15 PM

Sub'd for results and more info!

Even though I don't have the money now to buy this kit, I will be buying this kit in the future! :tup:

SS_Firehawk 03-21-2013 10:17 PM

Quote:

Originally Posted by Dzel (Post 2226365)
The intercoolers on the red car in the picture are not the same on the picture of the kit. Is there a rain fir this

I believe Mike was referring to that on his last post:



Quote:

Originally Posted by Mike@GTM (Post 2226134)
The intercooler setup on the red Z was necessary to clear the hood latch support brackets the Z has. The G37 doesn't have those support brackets and can therefore support the intercooler version you saw in the CAD drawings and layout pictures without modification. That said, we developed new hood latch support braces that gives us an additional 2" of clearance so we can run the same intercoolers on both the G37 and 370Z while supporting the hood latch properly. In addition, the extra clearance allows us to run a wider, taller core on the 370Z than what the red Z currently has. The red Z currently has 10" x 10" x 3" intercooler cores while the production cores with the new support braces are 12" x 12" x 3" cores. Also, the new end-tanks are going to be polished, cast aluminum tanks as opposed to the sheet metal prototype end tanks you see in the pictures of the red Z.

Here is a picture of the support bracket I'm talking about:


Nix's car (red one) will most likely be retrofitted with the new stuff when it's ready and most likely used what's currently on there to speed up results, testing and R&D. Us forum members are pretty impatient and we expect results yesterday. So we have new exhaust manifolds, new intercoolers and new hood latch thing. That's a lot of new.

SAM@GTM 03-21-2013 11:01 PM

Quote:

Originally Posted by SS_Firehawk (Post 2226404)
I believe Mike was referring to that on his last post:
Nix's car (red one) will most likely be retrofitted with the new stuff when it's ready and most likely used what's currently on there to speed up results, testing and R&D. Us forum members are pretty impatient and we expect results yesterday. So we have new exhaust manifolds, new intercoolers and new hood latch thing. That's a lot of new.

Actually the red car is not Nicks. His car is getting all the final production parts from the get go.

Sam

SAM@GTM 03-21-2013 11:04 PM

Quote:

Originally Posted by Ipl 370gt (Post 2226229)
Isn't this the Dyno from the IPL?

Yes, it is .

Sam

Nixlimited 03-22-2013 02:09 AM

Quote:

Originally Posted by Mike@GTM (Post 2226134)
As for the 16g install, we have a car here courtesy of Nixlimited that is getting that setup. Stay tuned for results on that.

Can't wait! Been a long time coming. :happydance:

Quote:

Originally Posted by SAM@GTM (Post 2226452)
Actually the red car is not Nicks. His car is getting all the final production parts from the get go.

Sam

My car better not be red when I pick it up! :icon18:

blackonorange 03-22-2013 08:48 AM

I need this like today

370zrider 03-22-2013 01:58 PM

I am new in the forced induction subject... sorry for asking dumb questions, but I need to know the details of going TT.

Are stock spark plugs good enough to handle the twin turbo kit or is it necessary to upgrade them?

What is the additional maintenance the car must have once the twin turbo kit is installed?

SAM@GTM 03-22-2013 02:01 PM

Group Buy Thread started here: http://www.the370z.com/group-buys/68...ml#post2227665

First post updated as well.

Sam

SAM@GTM 03-22-2013 02:03 PM

Quote:

Originally Posted by 370zrider (Post 2227710)
I am new in the forced induction subject... sorry for asking dumb questions, but I need to know the details of going TT.

Are stock spark plugs good enough to handle the twin turbo kit or is it necessary to upgrade them?

What is the additional maintenance the car must have once the twin turbo kit is installed?

You can run the stock plugs, but we usually recommend going with one-step colder plugs.

As for additional maintenance, there really isn't anything special needed just like a factory turbo car.

Nixlimited 03-22-2013 02:03 PM

Quote:

Originally Posted by 370zrider (Post 2227710)
I am new in the forced induction subject... sorry for asking dumb questions, but I need to know the details of going TT.

Are stock spark plugs good enough to handle the twin turbo kit or is it necessary to upgrade them?

What is the additional maintenance the car must have once the twin turbo kit is installed?

Before you get jumped, I would suggest searching within the forum for previous discussions of these topics, as well as checking out the various FI primer and FI noob threads.

To answer your question, you will want different spark plugs, and a well designed kit should not require substantially different maintenance than a normal sport car. However, you should plan on saving to fix things when they come up, and saving for more than just the price of the kit to do it right (e.g. gauges, cooling mods, etc).

SS_Firehawk 03-22-2013 02:38 PM

ROFL, Nix is grey... I guess I should pay attention to his avatar. Thanks Sam.

Footloose301 03-22-2013 03:04 PM

Quote:

Originally Posted by Nixlimited (Post 2226607)


My car better not be red when I pick it up! :icon18:

.......surprise!:roflpuke2:

Mike@GTM 03-22-2013 03:21 PM

We've had a few PM's regarding getting a credit for already having an Uprev cable and license while purchasing our Turn-Key kit. We are offering a $200 credit on the Turn-Key kit if you already have a license and cable but still want a tune from us as well as the associated support.

Neo187H 03-22-2013 03:27 PM

Quote:

Originally Posted by Mike@GTM (Post 2227937)
We've had a few PM's regarding getting a credit for already having an Uprev cable and license while purchasing our Turn-Key kit. We are offering a $200 credit on the Turn-Key kit if you already have a license and cable but still want a tune from us as well as the associated support.

When do you think you guys will have 16G dyno graphs out to compare against the 18Gs? Considering the old ones are on your old much more optimistic dyno. Also you said the 18G at 11PSI hits 494WHP but the graph attached never goes above 450WP? Is that the correct graph?

Mike@GTM 03-22-2013 03:52 PM

Quote:

Originally Posted by Neo187H (Post 2227952)
When do you think you guys will have 16G dyno graphs out to compare against the 18Gs? Considering the old ones are on your old much more optimistic dyno. Also you said the 18G at 11PSI hits 494WHP but the graph attached never goes above 450WP? Is that the correct graph?

We'll be posting 16g Mustang dyno results once we finish up Nixlimited's car.

The graph we posted had the horsepower and torque scales set to 500 and 450 respectively. We have a different graph without boost that displays both horsepower and torque scales (the Mustang software only displays two scale channels at a time) that we'll be uploading here shortly.


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