i have increase my 4g93t to 1 bar boost and tune it with e-manage. Now, if i down boost it to 0.6 bar, but dont tune my e-manage back, what will happen? engine running super-rich? or e-manage will adjust accordingly...
need some help deciding should get an anti-cat system exhaust
i am worried that i will lose back pressure since my r34 is triptronic? i dun want lose the low-end...but if i boost up turbo, it should matter right...