I have the nismo cat back, super high flow cats, and typhoon cai. Would a utech give me any better performance? Would it interfere with my factory warrantee?
future mods will require the utech, so should I just buy now?

 

you need to dyno your car and see if you're running the current mods safely. It's not always about performance gains. but yeah, you'll definitely give you more power.

 

Once you dyno your car you will be able to see what your A/F ratio is. If you are running to lean you are losing HP. With our cars you would want to have your A/F ratio around 12.8 to 13.1 up to 5800 rpm and then richen it up to about 12.5. All cars are different depending on Mods.

The first thing you need to do, and everyone will tell you the samething. Get a base line dyno and go from there. Post up your dyno graph and we can see what is going on.

Hope this Helps

Later
Aceman

 

I don't mean to jack the thread--but I was wondering if you guys could take a look at a dyno run I just did w/ Mrev2, 5/16 spacer--I'm also looking to install jdm wledina exhaust, and potentially utec if the A/F is not good--Is it ok for the car to run rich as opposed to lean?