Quote:
Originally Posted by TonyS9
Yes that's the issue. There is too much air (under pressure) and not enough fuel. This is what happens when the dump valve stop working on the standard turbo. The throttle and idle valve can't control the air (o2 feedback too slow), it can't determine there is extra air and it then doesn't inject enough fuel.
If you don't close the throttle completely or disconnect the throttle closed switch it will stop stalling but then runs badly, may affect the O2 sensed trim values.
You can just keep it above idle on the throttle after boosting it will bleed it out after 5s or so.
Proper solution is to replicate the the original valve function and dump the pressure pre turbo (vacuum trigger valve that bypasses the turbo basically), but doesn't dump to atmostphere (need weird aftermarket temporary opening valves that don't work that well).
|
Thanks for the reply Tony, is there a reason why it can't be vented to atmosphere? I hate the noise they make but it'd save more plumbing.
And do you know if it matters whethe the valve is place before or after the intercooler?
Ben.