Induction parts + ECU reflash dyno results

Phimosis

Sorry the image quality is low. I snapped this from my iPhone.

Black line: Stock, but with rear muffler section removed.

Red line: Stillen G3 intakes, Stillen headers, Stillen Cats, Stillen exhaust.

Blue line: Stillen parts + Technosquare ECU reflash + dyno time.

In summary: $3,200 in Stillen parts gave a 26 hp increase over stock to bring it up to 328 compared to the original 302.

$700 for ECU reflash and dyno time ($500 for reflash only) gave an extra 15 whp for a total of 343 whp.

In total, it was nearly $5,000 including installation of the parts to gain 40 whp over stock. The throttle response in now extremely precise. The sound is wonderful, the over-rev to 8100 rpm is phenominal. The "Buzzy" engine vibrations that car magazines have been talking about are no worse above 7500 rpm. If anything, it smooths out a little.

One last thought: Lets pretend I gained 2 hp from removing the stock rear exhaust section. This car would have made 300 hp in this dyno. If the stock engine was 332 crank hp and it made 300 hp on this dyno, that's a conversion factor of 1.1066 for frictional loss (332/300). After mods, this car is making 343 hp on this dyno, which would be roughly 380 hp at the crank (343 x 1.1066). Not bad.

-Phim

NIZMOZ

Nice gains!

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SOLD: 2007 NISMO 350Z #0044 Silver Alloy
New DD: 2010 Titan Pro4X CC

Phimosis

lol... ok two more last thoughs.....

After the ECU reflash, the engine makes more power from 6800 to 8100 than it did at peak before the reflash.

I had Technosquare do the install of all the parts. They charged me $700. Everything was done in one day. The fit and finish on the install is perfect. The guys there are very nice and knowledgeable. Everyone speaks Japanese better than English, but there was no communication barrier.

mattjk

Richie and Howard are SUPERB mechanics. They have been in the business a very very long time.

wstar

Nice results. In relative terms (the graph lines to each other) this looks close enough to expected values, and it's a good result. The 300rwhp baseline, even with the mufflers removed, is kinda weird though. Nobody's come close to 300 baseline at wheels on any kind of dyno. Even DynoJets are putting stock cars at what, something around 270-275 most of the time so far? What's the story with that? Is it just yet another setting on the Technosquare dyno?

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7AT Track Car!
Journal thread / Car setup details

Phimosis

In short, the answer is, yes.

There is a little variability between individual engines, but Nissan has high precision and in the 4 370z's I have driven, I couldnt tell any difference in power output. There is a much larger variability in the dyno's and that debate has raged on for years. I'll leave the absolute hp issue alone. Let's just assume all the 370z's are 332 hp stock. Then let's assume this dyno said it was making 332 whp stock and 380 hp after all the mods. The fraction is the same. The number is wrong because it is overly optimistic, but it's useful as a benchmark to tell what your modifications are doing.

NIZMOZ

So please answer me why it went up to 7800 stock on the base line?

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SOLD: 2007 NISMO 350Z #0044 Silver Alloy
New DD: 2010 Titan Pro4X CC

Phimosis

I dont have an answer for that. 1) Artifact or 2) the dyno was interpreting the ignition signal wrong. When it was stock, fuel shut off started at 7500 and it was done by 7600.

Brazilbro

5k for 30hp... man.. thats pricey.. Im going to pay 10k for a tt kit and make 200hp over stock.. but thats me..

Phimosis

I totally agree on turbos being a better solution. I talked to Altered Atmosphere about doing TT but I'm in Cali and smog laws are strict. If you don't pass visual inspection and tail pipe emissions, your car will be off the road. AA said it would cost $3k to convert the car back to stock when it came time for emissions testing. Total cost for turbo's, shipping and reconversion to stock would be $15,000 that I would eat in depreciation. At that price point, I might as well get a used Corvette z06.

My endpoint with this car is to get a centrifugal supercharger for it but no one has them for sale yet. The other mods like headers and cats will tie in nicely with the supercharger when they come out.


PS. it was 41 hp gain at wheels... which would be nearly 50 at the engine.

carfr3ak

Here in Cali, if you have a new car, instead of an annual smog check, we have the smog abatement fee. The only problem you would probably have is if you got pulled over and you had to pop your hood for the cop, and once he sees your turbo/SC set up, he may send you to a referee even though you don't have to do smog check for the next 6 years.

JoeD

Police in CA only make you open your hood if you're a ghetto, sideways-hat wearing wannabe punk driving a tastelessly modified car and/or street-racing. Well...at least in the Bay Area.

darkseed

5k ? no...

you're wrong.

a kit will be AT LEAST 10k with installation. thats excluding any upgrades that you need to do. And you will need a catback exhaust which will run you upwards of 1,500.

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09 PG M6 w/NAV - 307RWPH - FI mods

BlackCherryZ

a total of more than $15K with all the necessary supporting mods and installation at this point.

perhaps, the price of TT and SC will go down in a year or two when there are more products and higher competition.

KingDavid

Please read again. He says he's paying 10 grand. Not 5. IIRC, he does his own work as well.