'09 370z Tuned with EcuTek by Ptuning with numbers

FPenvy

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

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324whp/258wtq AAM Tuned |F.I. NonRes CF CBE/NonRes TestPipes #373|UpRev Tuner|Akuma Motorsports Intakes|Z1 34 Row Oil Cooler

sixspeeddemon

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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Mozen

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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PW 370z | AEM | MISHIMOTO | ARK PERFORMANCE | WHITELINE | NISMO | STILLEN | FORGESTAR | BC RACING | AMS | NON STOP TUNING | CARBONETICS LSD | 4 Point DOM 1.75" SCCA Spec Roll Bar + Harness Bar
CHECK OUT MY BUILD THREAD HERE

njobe89

you're* 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
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.

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2 plus 2 times 2 = ? ... hint, it's not 8

Stillen CBE, Stillen Gen 3, TP's, Uprev tuned - 324whp/264tq

Nick M

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.

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| 2015 Nismo headlights| 275/305 | Z1 spacers | Eibach Pro-kit |k&n typhoons | AAM S-Line catback + FI test pipes | Stillen splitter |

Mozen

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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PW 370z | AEM | MISHIMOTO | ARK PERFORMANCE | WHITELINE | NISMO | STILLEN | FORGESTAR | BC RACING | AMS | NON STOP TUNING | CARBONETICS LSD | 4 Point DOM 1.75" SCCA Spec Roll Bar + Harness Bar
CHECK OUT MY BUILD THREAD HERE

GZ3

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

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09 GT-R
12' 370Z 7AT HANDED DOWN
12'+13' 5.0 SOLD

Mozen

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)

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PW 370z | AEM | MISHIMOTO | ARK PERFORMANCE | WHITELINE | NISMO | STILLEN | FORGESTAR | BC RACING | AMS | NON STOP TUNING | CARBONETICS LSD | 4 Point DOM 1.75" SCCA Spec Roll Bar + Harness Bar
CHECK OUT MY BUILD THREAD HERE

GZ3

cool. look forward to seeing a boosted Z from you

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09 GT-R
12' 370Z 7AT HANDED DOWN
12'+13' 5.0 SOLD

njobe89

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

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2 plus 2 times 2 = ? ... hint, it's not 8

Stillen CBE, Stillen Gen 3, TP's, Uprev tuned - 324whp/264tq

Mozen

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.

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.

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PW 370z | AEM | MISHIMOTO | ARK PERFORMANCE | WHITELINE | NISMO | STILLEN | FORGESTAR | BC RACING | AMS | NON STOP TUNING | CARBONETICS LSD | 4 Point DOM 1.75" SCCA Spec Roll Bar + Harness Bar
CHECK OUT MY BUILD THREAD HERE

James10694

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

Mozen

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

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PW 370z | AEM | MISHIMOTO | ARK PERFORMANCE | WHITELINE | NISMO | STILLEN | FORGESTAR | BC RACING | AMS | NON STOP TUNING | CARBONETICS LSD | 4 Point DOM 1.75" SCCA Spec Roll Bar + Harness Bar
CHECK OUT MY BUILD THREAD HERE

Doug@PTUNING

Awesome number Mozen, I didn't have a chance to see your car in person, probably because I work there part time. Glad to see Toan the tuner taken care of the tuning. Do you have EcuTek ProECU Tuning Suites?

GZ3

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

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09 GT-R
12' 370Z 7AT HANDED DOWN
12'+13' 5.0 SOLD