My friend has a 2002 gti he purchased the race valve but people said its bad for the carsso he removed it, I know that in same cars it cause CEL to come on but is it worth it to pick his up and install it or buy new considering there cheap new?

 

whats your car i got mine used and its perfect, just do it you wont regret it

 

2001 1.8t qm, yeah i heard that you really notice the difference.Im hoping to get it chipped sometime next month.