'09 370z Tuned with EcuTek by Ptuning with numbers
 

I finally got my car tuned right at Ptuning and with the following mods, (most of the kit from Z1) i love how it drives.

For power I have NST pullies, Ported Intake Mani, Stillen Headers, Berk HFCs, Motordyne Cat Back Exhaust, Stillen Gen III Cold Air Intake. Driveline is a Spec Stage 2+ Clutch w/Steel flywheel and a Quaife Diff with 4.08 Gears.

The date is off on the sheet but this was done yesterday at Ptuning. There is no wonky calibration factor or any of that stuff.

Staff is exceptionally friendly, tuner was knowledgeable and on the ball and after talking to me for a while about what i wanted to do with the car and the direction i wanted to go offered some options.

http://www.the370z.com/members/mozen...dyno-sheet.jpg

did u get a baseline before the tune?

I did not as there was no real point other than to discredit my etuner. (not ptuning or Visconti ) I have had most of the mods over the years slowly added as i had time/money.

Those are some nice numbers man! Now time to hit the track and get some 12's done :)

Solid numbers man! Well done


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very nice....i wonder what those numbers would be with Long tube headers

Probably no more than 10-15whp Max from my experience with other cars


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that would put the car at or close to 350rwhp... thats exciting:tup:

Yeah it would but remember every car is different and with NA it's harder to make horsepower because the motor has to get the air in and out faster on its own vs with boost or nitrous which is assisting the motor a lot


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swapping LTH's for stillen headers/HFCs wont gain you 10-15hp. maybe 5hp at best due to dropping the HFCs

if it was stock headers/cats and you swapped for LTH's maybe.

I disgree, i can see 10rwhp...a proper LTH will always make more power than a shorty anyday, berk HFC are still 300 cell count cats, that plus retuning....i can see about 10

'09 370z Tuned with EcuTek by Ptuning with numbers
 

Depending..... I can agree most people see 5-8 but I have experienced personally gain 11whp from swapping from hfc to long tube tune plays a good part as well. just sharing my experience


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just adding parts to an already modded vehicle does not net you the power the product itself is advertised for when being added to a stock setup.

basically diminishing HP returns the more parts you add. removing the HFCs will be the main reason of gains taking some restriction away.

i know how dimished returns work, imo 10 more rwhp swapping the stillen and berk hfc for a lth and retune isnt far fetched. Ive seen lth consistently through out the years yield more power than any shorty. Say you get 5 from going from 300cc HFC to nothing, 2-3 from the lth and another 2-3 from a retune. I could see that...

I don't think even 5. Idk the stock headers are high flowing as it is, the stillen I have are not much better imo. The cats I have are Berks but have heavy use. I think lth at this point might be 2-4hp with everything else.

Also the dynotronics is known to be low numbers which is why I like it because even tho its low its dam sure accurate if low.

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That is what I was getting at!


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beat me to it
beat me to it again lol


tp's offer a little more power then hfc. so that might be the only place where he could pull out a few more whp. saying he would get 10-15whp is far fetched. he might get 4-6whp more.

still nonetheless those are nice numbers at 335. seems ecutek is able to provide more power then uprev

yea I mean in freak situations it's possible but likely? not at all.

335whp on a dyno-dynamics seems high to me as well. maybe if it was dyno'd at Z1 lol

eliminating the cats alone should be about 5, FILTH are a work of merge collecting, equal length art! i would even 2-3... Solid gains man! How does a dynotronics compare to a dynojet

If you do a google search a number of other car forums say between 10-15% lower for a dyno Dynamics as long as no correction factor is used (which is the case here...no correction was used) Most common number i see is that the Dyno Dynamics reads around 12% lower on average. That makes me feel slightly better about the numbers considering the amount of work i have put into the car but...def makes me eager for boost which ill do next feb or so (finances permitting)

cool. look forward to seeing a boosted Z from you:tup:

if you knew you were going to boost your car, i personally wouldn't have wasted my money getting bolt on parts then.

im just glad we have another tuning option finally, and it seems to be paying off....i was not impressed by uprev

I appreciate the input but.. Why is it often considered waste? Everything is a build progression. I bought this car brand new in 2009 and didnt know how to drive it to the limit...hell i still dont. First mods were sways and handling components. I spent weekends with the local SCCA and on base at arranged "track" events. Paid the car off and decided i wanted to do more.

So on came a few different types of suspension, headers, pullies and so on. Each time i did the work myself or with friends and learned. (Exceptions are: first clutch and diff. Second time i did it myself and then the roll cage which was a shop in Houston)

After a few years ive managed to push the car and myself, growing both my automotive mechanical skills and my driving skills. Im at a point where i feel comfortable with the car and want to step it up again. Boost is natural and most of the mods i have done will support the Boosted Performance kit.

Personally, and not to take away from those who boosted right away, but for guys and gals like myself for whom this is their first "real car" i think the way i have gone about it should be the norm. I hate to think that id boosted right out the gate and then lost control at MSR Houston or on the road or something just to smash the car and waste my investment. :tiphat:

Each to their own tho and over the years the options here on the forum have changed and grown along with a super supportive group of members who care about their cars and those to the left and right.

because you won't use a lot of the bolt on parts and you won't be able to sell it 50% of what you paid. so it's considered a waste of money to buy those parts when you know for sure you'll boost it.

Still disagree but... your welcome to your opinion.With the BP kit Ill be able to keep exhaust and the headers, Ill have to sell off the CAI and the HFCs. Everything else supports the progression. :driving:

Definitely not a waste man, its all about the journey with modding. Trying different things, better stuff comes out, personal preference in performance levels...every single car ive ever owned ive changed my mind on parts and routes from the original idea when first got the car

Just saw your build thread too. Very nice

Those are some good results.We have pretty much the same mods and are very close in dyno numbers. Good luck with your build.

I'm not disagreeing with anyone but I think some of you are thinking of just bolt on and going. I was saying with the combo of LTH and retune should net about 10whp. And I also said every car is different but honestly if it in all seriousness made 2-4whp why would someone spend 900-1500 for LTH plus install if they can't do it themselves for 4whp. LTH 99.9% outperform shorty any day. I agree with the bolt on might gain 5whp with a retune i don't see why it wouldn't or why it couldn't pick up 10whp over the hfc. On my civic I had i had LTH with Hfc when I switched to a better flowing LTH without cats my car gained 7whp without tuned and another 4whp with a tune. So it possible it's really all in the tune. I do agree that when it comes to NA build its harder to make big whp gains after the basic bolt ons are there but people tend to figure that the flow rate of you intake and exhaust systems plays a huge roll on power the better the flow the better. But I'm glad we have a better tuning software now as well that alone can help make power by itself


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Who knows, perhaps it would.... However I'm near the limit of things to do and you hit that wall of diminishing returns. Only way to know would be to buy some lth and test at this point but....not in my build plan sorry.

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I understand that. Not knocking your build at all and I can agree with you on diminishing returns.


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you're* :tiphat: lol
of course man, everyone has an opinion. it's what makes the world go around. you also had your car for awhile so it plays out in your favor. looking forward to the boost build :) :yum:
because it's a 370z, it's hard to get a big gain out of it like that. i think switching to e85 can get you about 10whp or so i've heard.

I may not have as many mods as you but I do have the FI LTH CBE and stillen gen 3s and I made 314whp... just saying

I think you're tossing around apples and oranges.

I had a b20 vtec, ITB'd civic myself in the past, and a small change, retune, or better bolt on absolutely delivered a measurable difference in whp.

The VQ is not that animal. Its not a B or K series, its not an LS, its not a coyote 5.0

The VQ in these cars is already towards the end of its efficiency, and they absolutely see diminishing returns with bolt ons. I would personally never even bother getting headers for this car, short or LT. It's not personally worthwhile for the cost for the return. I'm aware that most of the header products available are "off the shelf" and not a completely custom, refined for 15 years piece like a Hytech, or RMR or whatever is out there for other platforms. Sure a shop like a Hytech could slave over a set of headers to extract every drop of HP out of the VQ, but they would retail for an enormous amount of money when they were done.

Agree with Nick , here.

The VQ has been refinded from the factory, You get some WHP out of bolt ons and tune, but one thing I wouldnt invest in is headers, The PIA of install, cost of them, and added noise ( Long tubes) isnt worth it, Ex my buddy is fully bolted and tuned and he made 316 WHP ( 370 Z 6 spd) on a high? Dyno. I made 302 WHP on a "low" dyno and I have a auto AWD sedan, I'm would bet you strap his car to my dyno and we'll make very close numbers and for 5-6 WHP the headers are worth the $800 they cost + install :/ Just my .02

Please... If you can open up a DE, you can open up a VHR. In this case if the high flow cats and crappy stillen headers were replaced with FI LTH plus a retune there would absoluty be gains. Nothing insane, but about 8-10rwhp is very feasible. This motor is not tapped out from the factory, but what are you expecting here? Cam gains on a pushrod?? No... Motordyne is also working on a lth... You dont think gains will be made there... A couple years ago 315-320 was the norm this motor made FB....Fast forward, im seeing 325-330. This motor imho will be close to its limits na around 340-350 with its heads and considering they dyno stock around 280,... Even being at 330rwhp is a 50rwhp gain. Again. Far from tapped out

And to the comment about this not being a coyote 5.0 motor, my 13 5.0 made 382 rwhp bonestock and after full bolts and tune i managed to squeeze out 430rwhp and thats without tearing into the motor of doing cams or heads... Very on par with FBO gains from VHR.

What dyno? Any corrections? And what local temp/humidity

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Either way, only way to solve this is to so back to back testing with someone's car at this level and see. If be game if ppl want to pay for it? Lol

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Some of the testing has been done by F.I.

Thread: http://www.the370z.com/intake-exhaus...ders-here.html

http://i371.photobucket.com/albums/o...eaders_STD.jpg
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http://i371.photobucket.com/albums/o...vs_Headers.jpg