Originally Posted by
turbo-herman
i agree but i thought maybe with an 67mm throttle boddie it would be good.
Pumaspeed recons at would give an instand 4-6 bhp extra.
On the other hand i can't imagine that the oem pump and injectors can't keep up.
But maybe you guys have more expecriance with that.
I've also seen An underdrive pullykit at pumaspee wich should give a few extra horsepower!!??
I guess it's becouse of the weight of the pully's?
Will this be a good mod?
Next year i need to replace the timing belt so it would be a good excuse to do this.
i have a cfm underdrive pulley on my track car. i removed aircon at the same time. the standard pulley weighed something around 1.5kg and cfm was 300grammes so big weight saving. it made a noticable difference to the revs speed up and the car felt quicker but i did remove ac too. there are supposed dangers with them as they remove the harmonic balancer which is built into a standard pulley. this can cause big end bearing wear or soming like that but i think some people agree with this and some dont. i dont care personally as i dont do many miles in track car and it take many thousands of miles to see any wear so ive read.