My friends car: 90 integra LS with AEM intake, short shifter, generic muffler off ebay, no catalytic convertor, stock tires on stock 14" hubs
My car: 91 integra GS with generic intake, generic muffler off ebay, high performance tires on 15" gsr rims
He runs a 15.4, I run a 16.5. wtf? I know that he took off his cat and i still have mine, but would it really make more than a second of difference?
Another question, if i took off my cat, what would go in its place, some piping ? Also, if I took off my cat, would that lower my back pressure even more and reduce my torque. Also, does getting headers reduce back pressure and reduce torque also?