Anyone tuned with Portland Speed Industries(PSI) ?
 

Hey guys, I was wondering if anyone has tuned their car with PSI? I did tune mine 2 months ago, but I'm starting to have doubts that they actually tuned it to the 302whp they claimed... Thanks.

Why are you doubting it?

A friend of mine has 370z 2012. He went to PSI and by the time he came back, his ecu was reset back to stock. Also I raced a stock 350(intake and straight pipe only) and we were pulling the same. If I really had 302 whp, I should've beaten him by far. I'm going to pay 100$ for dyno and see what happens.

I have heard bad things about PSI

Subbed, they are very close to my house, always wondered if they do good work on our cars. I seem to remember the owner had a 370z at one point in time.

Got it on Dynojet today, 280 whp on 4th gear.

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Nice, now post up the graph!


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I don't know if it's nice. I'm pretty sure on 5th gear it will be around 287whp which again isn't close to 302 whp.

http://imageshack.com/a/img912/9899/azUR8i.jpg


p.s. Isn't 5th gear supposed to be 6 speed cars' 1:1 ratio?

What mods do you have?

I currently have stillen gen 3 cold air intakes, mishimoto oil cooler, test pipes(I don't know what kind - previous owner), TOMEI EX Ti exhaust(which at the time when I tuned my car at PSI, I didn't have), and some other minor cosmetic parts. Seems like these mods have 0 impact on my whp and I'm driving pretty much stock 370z. :shakes head:

On a dynojet 4th gear will read more than 3rd gear, and 5th gear will read more than 4th gear ect etc.

I always run the cars in 4th gear.. 5th gear is waaay too long on the manual cars

John

Oh, I see.
On a side note: Is supercharger my only option to increase the whp on this car or what? - Yes, long tube headers is another 15 whp perhaps.

What kind of power increase are you after?

Well, graduate power increase would be the best, so I don't get used to it if you know what I mean. I thought I can hit 330ish whp by the end of this year, but now I'm doubting that.

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I would go see Tim at Cobb Tunning