what people are forgetting here is, the pipes are made from scratch in about 5 steps.
if a redesign is required then its not just botching the old one, a new cast needs to be made, which is metal, which takes a while, then the silicone is applied in steps , then baked in the oven, even harder if the car he is making it for isnt avialable to him.
the kits are very very impressive. a 2.4 stilo i.e mine, when it was good, was 161bhp standard, mapped 171bhp, induction fitted, rr'd again
197.9 bhp, now thats an impressive gain, and torque, 161lbsft- 250lbs-ft.
well worth the wait, and of you think its expensive, look at a k&n typhoon
im a close friend with pete and he is a very very very busy man, alot of custom on fiat forum coupled basically with what is a 1 manned operation and things take time.
but worth it, oh yes, im currently waiting for my kit for my 156