ok so im looking at getting a revo chip, i have had a look around and the best price i can find is 380! is this a reasonble price? also my engine is very ticky from the injectors and tappets and the black charcoal box anything can be done to make it quieter? also when cold in the morning my power stering makes the worst groaning noise ever!! is this normal? lierally 2 miles down the road it will stop!