Had my car on the dyno on Saturday. Here are the results. Power is about where I expected, but it looks like I am running pretty lean. Car is an 01 225QR. Mods are GIAC X, NGKBPR7E gapped to .028", VTDA, MBC, Forge007 yellow spring. The first run was 21psi. I saw that it was lean so we did the second pull at 18psi. The power dropped, but A/F stayed exactly the same. Third run was the same as second. What could be causing this?I assume those bumps on the graphs are timing being pulled.

[IMG]local://upfiles/43247/359E8BD2539B47CEA08E2F4C85333092.jpg[/IMG]

 

Having a cat and the a/f being read from the exhaust tip. This causes it to read lean by ~1 full point. Also the stock tuning already runs lean. So if this is what you have and how it was tested, you are fine/normal

 

Thanks, any thoughts on the bumpy graphs? Unfortunately we couldn't read timing.

 

It is at peak psi and my best guess would bt the n249 opening the dv a little bit. Dont think timing would of been the cause unless you had severe pull which is less likely. Your psi didnt fluctuate at all did it?

 

It wasn't jumpy. It does trail off a little asrevs go up though.

 

my best guess would still be a n249