Headers or 1.8 Roller Rockers
I wanted to do gears, but I don't want to lose gas mileage on the freeway. I was looking into installing either headers (long tube or shorty), or 1.8 roller rockers.
-Some companies claim 15-17 hp from 1.8 RR, but in reality its most likely 5-8hp tops.
-Some companies claim that headers will bring 15-17 hp, however, some say that the car will lose torque/power because backpressure is lost.
What mod would be better?
-Mac CAI/73mm Mass Air/Insulated(gets cold!)
-Dual Flowmaster 40s, H pipe (2.25 in pipe)
-Mac CAI, 73mm Mass Air
-Dual Flowmaster 40s, H pipe, 2.25 in pipe
-42% Underdrive Pulleys
-4.10 Gears & Trac-lok