I was just wondering how either the SRI or CAI affects gas mileage after installation. Does the SRI improve it more or CAI? Does anyone have any rough numbers?

 

w/ just intake your gas mileage will be pretty much the same or a bit better.

 

i have a 04 ralliart with a injen cai, custom 2.5" catback, short shifter and a few other goodies.. i recently just got 423 miles to a tank of gas (all highway thou). so i dont think it affected mine... if anythign made it better...