Hi guys. My G37x only has 3000 miles on it. So far I have installed greddy ti-c, ichiba y pipe, bb grounding kit, and soon the R2C intakes. To my understanding, these mods will mess up the stock AFR because the engine runs lean since it'll bring more air into the engine. So is it neccessary to have my car tuned for the engine to compensate for these mods? Thanks for your inputs.

Can I use the cobb accessport to adjust the AFR?

 

You must tune to take full advantage of your mods.

Any tuner can adjust your Air/Fuel Ratio.

 

This Topic has been beat to death. SEARCH!!!!!

 

Thanks Heat. but as far as the AFR if I leave it the way it is would it do harm to the engine? do you have any tuners in mind that you can suggest me to get on top of your head?

 

It wont harm your engine for a short time but you are not doing your performance any good and you are prob running too lean.