2.5 or 3inc exhaust? light flywheel or not?
 

Have tried a search but dosent seen to come up with anything intresting.

Im wanting to get a full exhaust system for my93 wrx. I am after around 300 relable bhp (is this poss on stock internals?). but what im really after is quicker spool up and thus acceleration.
Would the 2.5inc do me or would the 3inc be better as iv heard with the 3inc turbo spool is slower?

Also would a 4.5kg fly wheel be a good buy for what i want?? as im not up to speed on light fly wheels? so any info on them would be helpfull.

Thanks

Saw your question on the GB and was thinking the same thing! :) I'm after a full system for an MY03 WRX that's to have an AFP18G fitted and tuned for road, rather than drag use. Slow spool would be a sod and there's only 50 quid difference between the 2.5 and 3, so no issue there.

Hope we get a knowledgable response! ;)

TIA all.

2.5" will be fine circa 350bhp

You may find that a 4.5kg flywheel could cause problems in an everyday road car with it being so light.