Gulpilen

Im thinking of move the vaccum hose from the intake near the maf (cant have pressure in there...) to the intake of the turbo but what about the hose entering the one in the middle of the engine?

Shall I have a vaccum tank somewhere to improve the vaccum?

/Jonas

sublimate

You won't have much vaccum at the intake of the turbo unless you have a really small or dirty airfilter

Gulpilen

Ok, I will try to have a big clean one!

So where is a good source of vaccum?

/Jonas

sublimate

Generally you're not making boost for very long - only during WOT acceleration. So your intake will probably make enough vaccum as is. If not, you either need a bigger accumulator or an electric vaccum pump.

Jim Nowak

Use a vacuum activated blow-off valve and it will not be an issue. With the BOV, your car will operate as a naturally aspirated engine until you go to WOT and then the BOV will slam shut giving you instant boost. The BOV will also help your car run cooler and save your turbo or supercharger from excessive wear caused by the shock wave of the throttle slamming shut after you get off the throttle on a WOT high rpm run. Without the BOV, the shockwave travels all the way back to the impeller blade and will eventually cause failure.

Gulpilen

Thanks!

No worries then!

/Jonas