To give you a bit more info. on this bypass valve....
Basically what it does is allow the charger to operate more efficiently. It takes engine power to compress the air in the charger, which is obviously offset by the power increase it gives you. For example, in simple terms, it might take 50bhp to drive the charger, but the charger might create an increase of 150bhp. This would give a power increase of 100bhp. What this bypass does is actually bypass the charger when it is not needed (when cruising at 70 on the motorway for example) and therefore it does not take any power from the engine to drive it (when the charger is bypassed it is not compressing any air). This results in much more efficient running. (thanks Andy! :winky: )
Your charger will already have this bypass valve. I have a spare one of these for sale if anyone wants it.
TTE have quoted me 354.93 EUR = 238.029 GBP for one of these. I have a brand new one and will sell it to the first person to PM me with a sensible offer. :)
I don't know Kaz.