Originally Posted by road_rage
i know that my mitsubisi rage is not meant to go fast. but what can i do or buy to feel a diffrence in power. i would like cheap things and some expensive things but let me know what you know.
mitsubishi mirage 98
mostly stock(flowmaster catback)
heavy ass system in the trunk
and my 240lbs
Less Maccas and Colonels Sanders might be a good start. You know they're banning fast foods with transfats here.
I have never wasted my time with a mitsi engine since the Astron days, but you might like to try this:
I'm guessing it's a pretty average power level ~= 70kW at what 6000 rpm and max VE at about 3000 rpm =~ 1.5 x 3000/120 = 37.5kW = 37,500/(2Pi x 50) ~= 120 Nm?
So at max power you will be sucking about 70 l/s which means your rough throttle body size should be 55mm, but more realistically 50mm to give it authority over the valves.
Your intake pipe should also be 50mm and approximately 600mm long by my rough calculations.
So firstly check your throttle body is 50mm, secondly check that the intake pipe is 50mm diameter and about 600mm long. The type of filter won't make any difference.