GT Motorsports: 370Z Stock block testing, and turbo system development
 

Well our 370Z test car finally arrived, it is not easy getting one
of these right now since they are still so fresh. We are currently testing the stock engine with our GTM VHR Test pipes, and are also developing a 370Z Catback exhaust system. Dyno results will be posted for both once testing is completed.

Looks like we are going to build the first twin turbo 370Z, which should be completed within the next 30 days. At which point we will be taking orders for our GTM 370Z Twin Turbo system.

We are very impressed with the power this car puts out in N/A form, nearly 290rwhp! With test pipes and exhaust we should be over 300rwhp. This model Z is lighter and feels much tighter than the 350Z. This platform is going to be the ticket for road racers, especially with the available Syncro Rev-match on the sport models!

Enjoy the pics and graph, more updates of the progress to follow.

-George
GT Motorsports

GTM test pipe results:

:tup: This is probably the first official Dyno results in the United states, correct? Thank you guys for taking your time to do this.

Nearly 290 RWHP? :eek: that's great. I can't wait to see what you guys have planned for this car. :excited:

Great pictures too. :tup:

agreed 290 ....thats a nice starting point.

Niiiice!

This car is going to be so much fun.

FANTASTIC! Dyno results that are WAY better than I'd expected. I was thinking it was going to be close to 275. So if the numbers are right, and the engine is putting 332HP out at the crank, we're only loosing 13.7% of the power through the drive train and the wheels. That's freaking incredible.

This is a great platform, more power, less weight, and it feels so connected and solid.

Makes me want to go out and get one, but I will have to settle for my G :(

-George
GT Motorsports

Thank you for the comments, and yes as far as we know, we are the first to dyno test the 370Z.

-George
GT Motorsports

hey george id love if you could weight your 370z without sport pack...and of course waiting like everyone to see the result of the addition of your nice test pipes (i want some those look nice with the side brackets and foolers!) nice work:tup:

I'll see what I can do for you ;)

-George
GT Motorsports

Much appreciated! Do you think you could ride a twin turbo base 370 with stock wheel/tire without traction problem (would prefer sleeper look, might put 245/275 on stock 18) ....how much for a base tt kit (that ill have intalled ; im far far. celine dion town near montreal canada :nutswinger:) you can pm me with details looking for 400whp with low spool time hi response:driving:

Test results are in for the GTM Test pipes...

Nice solid gain with factory exhaust..... you think we can get a video of the exhaust sound with pipes. In the meantime your personal opinion will work.. :)

Traction issues are going to be relative to how you drive the car, good throttle modulation is key. I would leave the stock wheels and upgrade the tires to an R-Compound for ultimate sleeper with traction.

Our stage 1 kit will deliver very fast spool time and will easily achieve over 400rwhp.

Maybe you can be the first Twin Turbo 370Z in Canada? :)

-George
GT Motorsports

It sounds awesome, we will post a vid of the test pipes + our GTM cat back exhaust at a later date.

-George
GT Motorsports

In for some updates.

^same

Cat back exhaust testing should be complete this week.

Thanks guys!

-George
GT Motorsports

pics and sound clips please.. :]

Soon :)

Here is the first version of our 2.5" GTM cat back with some dyno results and some pics, The car made 308 RWHP and 261.1 RWTQ with adding 2 degree's of timing via the consult III. The 370Z counties to impress us by how well it responding the modification we are making. We will be finalizing the GTM ecu flash for the 370Z within the next 10 days and i have no doubt that we can get other 10 to 15 RWHP with some tuning .

We have another week to finalize our GTM 3 " exhaust then we will move to the turbo kit .

Stay tuned

Sam

nice..! :tup:

DYNO RESULTS

Sam


GT MOTORSPORTS

Sounds fantastic as well. Preliminary price point, $1500 - $1800 with test pipes?

Now this is how you show results.

P.S. What were the sparks flying out the back?

I think the next thing you guys need to do is weigh the exhaust. Its not going to be titanium like the Japan brands, but at the same time, it won't cost $4500 bucks.

Those numbers look great. You didn't loose any torque and in fact gained! Any idea what kind of numbers this would do without replacing the cats? I plan to keep my car smog-legal until I do the turbo.

Nice!! Who turned out the lights :icon18:

I hope you guys can keep the cost reasonable, with so many people making SS catback exhaust for the 370z it's going to be a tuff choice.

I like the numbers and torque curve I'm seeing, I want something that will give some gains in the lower rpms as well. This car seams to need it, doesn't really come alive until after 5K RPM, and for a street car it would be better to have power come in a little lower.

Keep up the good work :tup:

Braden

PS: I know you guys are working on a TT for this, but any thoughts of a NA intake as well???

I am impressed with the sound of the dyno pull that you have on youtube with your custom catback and test pipes. It sounds great! Power gains are very cool too, but I wish you hadn't added 2 deg of timing to get real results of the catback alone... Looks great, sounds great. If the price is right, I don't see why not.

Make a thread about the new catback or I'll steal your thunder and make on myself!

can you guys post up a vid of the sound of just the test pipes WITH stock cat-back exhaust?

A little cat substrate material :confused:

Here is a dyno graph of one run with the added 2 degrees and one without, as you can see the gains from the timing advance were minimal.


MSRP for this exhaust will be around $1,495.00, in polished stainless steel, with Titanium tips being optional for an additional cost.

-George
GT Motorsports

Interesting. I assume that you're making a 3" cat-back for the turbo kit?

Any updates on the turbo kit?

Currently we are working on the 3" Turbo back exhaust, and then the twin turbo system.

-George
GT Motorsports

Fan-freaking-tastic! I'll have to add that to my list of stuff for you to do when you turbo my car. I assume you'll be tuning it for that, right?

it will be interesting to see a graph of the 3" on the NA app as opposed to the 2.5"
i wonder if youll lose much low end?

Without tuning, you'll likely lose enough to feel it.

+1 I want to see how it handles a 3" pipe.