Very close to finishing up the performance on my car. I went to technosquare today and talked to tadashi for a bit. He advised i flash back to stock before i do the baseline so it does not affect the result for the header dyno and I am very impressed with the results. Headers are being installed on August 12 and goign back to technosquare on August 20 at the same time of 1pm to redyno. Now here are two dynos: first one is the baseline i just took, second one is my old dyno with old mods and i am only 2.7 WHP down WITHOUT MY CAR REFLASHED!! Car is down a lot on torque but i hope to gain that back and have my dyno curve smooth out when i reflash the ecu again. And here's a little fun fact......on my OLD MODS before the reflash was 278 WHP. So with my new setup both on stock ecu i gained 15.2WHP BASELINE=293.2WHP without/reflash OLD MODS w/reflash=295.9WHP OLD MODS without/reflash=278

MODS: Injen dual intake, Fast Intentions Intimidator, Fast Intentions Reasonated Test Pipes, Stock ECU



MODS: Stillen long tube dual intake, Fast INtentions Dual 3inch Dominator, Fast Intentions Reasonated Test Pipes, Reflashed ECU(gained 17whp from reflash)

 

nice numbers! i can't wait to see the dyno for the headers with the reflash. i think the HR will put around 325 whp with full bolt ons.

 

maybe we'll have to see. Got headers, pulleys, and a reflash/tune left. You have to also remember my car is an auto so it will always be lower then a simliar car with teh same mods but with a stick

 

You grabbed a better exhaust for your setup. That has to be what makes the big difference. The pulley is a good upgrade, if there's a big difference in weight from the stock pulley... there's no weight comparison available yet

 

I wonder what made more difference, your change in exhaust or intake?

 

tadashi told me he thinks its the intake even though my old exhasut was a turbo exhaust he todl me i didnt' gain more than liek 4-5 WHP from that and that most of the gains are from teh swap in intake. He says that the only downside to the injen intake is the 5200 to 5700 RPM dip that is much smoother with the stock intake. However he told me it woudl smooth out after the reflash and tune.

 

which does has a broader power ban increase... K&N drop ins or Injen CAI?

 

Interesting. Thanks for the info. Did Tadashi have any thoughts on other intakes, such as the JWT?

 

Said these were the best design so far for hp gains and if you really want to swap from stock these are the only intakes you should get. He still recommends stock however but does not hate the injen if that makes sense. He says these need more dynos and info before he can 100% back them up.

 

Cool. On stillen's website they have dyno chart of a G37 with their headers superimposed with the stock headers dyno. Well the charts show 12whp gain. Keep us posted. Your contribution is highly appreciated

 

I thought they said 14WHP? Not sure about that but my before and after dyno sheets are being sent to stillen and whether they choose to use them or not is up to them.

 

I envy you VQ35HR owners

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I still don't understand the point of puting on aftermarket headers on the HR, it already has equal length headers, so gains will most likely be minimal.

 

that's why I'm doing the dyno to see if there are any gains. If they are minimal then the community will not buy them and this dyno would therefore save them money.

 

Props for doing that.

 

I don't know, honestly, something seems wrong with a difference from old baseline dyno without reflash, and the new baseline dyno without reflash. So are you putting on the headers, and then dynoing, and then the reflash and then dyno?

Also, what are the differences in aftermarket parts between the old and new dynos without reflash.

Honestly, I don't expect you to gain much from the reflash of the headers because I don't think he (Tadashi) properly 'tuned-down' or reverted the ECU back to stock, but there's only one way to find out. Good to hear that you're getting these installed.

Also another question, I noticed you're in So. Cal., as so am I, where is Technosquare located?

Thanks for your input, and I look forward to the headers install and hope your purchase was worth it.

vnarang

 

and people didn't believe me then... love my car now just with the intakes and reflash. i still love the sound of my stock exhaust and car runs amazing.

 

That sounds very promising with the injen intakes. I want to see some of the polish black ones they make. I have the black fujitas and love the look of them.

 

I am putting on headers then dynoing, then install my UR pulleys then dynoing again using teh header dyno as teh baseline for that, then im goign to reflash and then tune with multiple dynos. Header dyno is on August 20 and pulley/reflash and tune dynos are on August 25.
The difference in parts between new and old without reflash is the injen dual intake replacing the stillen long tube dual intake, and my fast intentions intimidator(2.5 inch dual) replacing my Fast intentinos dominator(dual 3inch turbo exhaust).

Pretty sure im back to stock and after seeing the numbers i asked him to check it twice and he did. I mean all he has to do is click stock ecu programming on his computer and the program jsut loads up. Plus i totally feel the difference. Even though i only have 2.7 WHP less than when i had my old mods and reflash, the car feels a lot slower, throttle response is severly down and everything seems to lag. Plus I keep the redline limiter at 7500 whcih i am not use to and should also confirm the stock ecu.

Technosquare is located in torrance which is about 30 min from the intersection of the 101 and 405 freeway(without traffic). 100% recommend this tuner as he seems to be very knowledgable with our car.

Hope the header results come out better than expected and if they dont' gain anything, it's still fine because i would have had fun in the process of everything

 

do you have any dynos?

so im assuming this; with exhaust/intake/reflash/hfc/headers/UR pulley, a 6mt HR can put down ~300whp ~260wtq


thx A.H. for doing this