dump valve
#1
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dump valve
Having just bought my first scooby complete with bailey dump valve i was quite suprised to find that they are not a recommended fitment after reading these forums. Is it really true that they can damage the engine ? If so why are they made and marketed for these cars ? I have had several other cars with dump valves with no problems so is it just scoobys that suffer. Any advice please as i happen to like the sound but will remove it if the rumours are true .
#2
The standard one it came with is the best one for the job. The excess air is recirculated which the ecu is set up for. With a VTA that air the ecu is expecting back into the system is being dumped. So the fuel air mixture will be wrong.
#4
If so why are they made and marketed for these cars ?
I have had several other cars with dump valves with no problems so is it just scoobys that suffer.
Any advice please as i happen to like the sound but will remove it if the rumours are true .
#5
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I removed the VTA on my classic STI (it came with it) and the throttle response was so much smoother between gear changes and I didn’t look like a tw*t every time I lifted off
#6
Get a dual vent dump valve. That gives you the best of both worlds as it doesn't affect the ECU and doesn't give stalling problems but will vent to atmosphere at high revs.
I use the APS one and it's awesome.
I use the APS one and it's awesome.
#7
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#9
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Still cant understand why they manufacture and market them if they potentially can damage the engine. Even recommends fitting them in a subaru book i have just bought !!!
#10
Even recommends fitting them in a subaru book i have just bought !!!
On a newage car there's no reason why most people would need to change, as the the original fit DV is pretty much perfectly designed.
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there are to many people that over react about the damage of a vta bov i have had mine on for over a year no damage idials fine and runs fine, and you will get just as many poeple saying thers runs fine as others sayin it does damage, its an over reacted subject.
#12
It's done your spelling and grammar no end of damage, have you tried removing it to see if they return to normal?
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