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blenkarn123
Guest
I am thinking about fitting either a dump valve or a blow off valve to my Impreza wrx but im not sure which is the best, could you reccomend one and if so what is it?
Thanks
Thanks
i'd recomend a Dump Valve as a BOV can cause the engine to run on a Fuel rich mixture, as the air is vented into the atmosphere
Plus and dont hold me to this but the recirc's tend to give you less turbo lag as they allow the turbo to continue spinning when you let your foot off so when you change gear and floor it again you haven't got to wait for the turbo to spool up.
You want sequential blow off valves, one for each piston,
You want sequential blow off valves, one for each piston, never get turbo lag again mate. I went in my mates Evo 3 with Evo 6 engine and that was running a nice 360bhp and had sequential valves, sounded amazing when he chagned gear and the turbo was instantly there when the accelerator was pressed
Not sure what this "one for each piston" thing means but I suggested a sequential BOV about a week ago in this thread. A sequential BOV has two valves that open one after the other. A small valve opens first, which PULLS (most DVs are push-types) the second bigger valve open.
Fitting something like this will absolutely not completely get rid of your turbo lag, in fact you'd be hard pushed to notice much of a difference lag-wise. Evo's are just like that; pull well and spool up quick from low rpms. "You want sequential blow off valves...never get turbo lag again" did make me laugh though :amuse:
Bertrum, it's nothing to do with how many turbo's you've got as the device is just fitted "somewhere" along hte boost piping. It's perfectly possible to fit two or more BOV's or DV's to a single turbo car and I've seen this several times. No benefit though really. In fact, Old-git was bang on the mark when he said DV's and BOV's are pretty useless apart from the noise.
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