boost issue's with the 35R
Originally Posted by quickgti18t
i have a HKS SSqv the screw is all the way loose... hmmmm i think i tried tighting it before but had no luck.. Im running a 38mm wastegate with a 1 bar spring ... I think im going to try a EBD and maybe change my BOV to a tial 50mm
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From: nc
Originally Posted by DSMotorsport
Sounds like compressor surge. Most 35R's will surge on a 2.0L engine, surge even worse on smaller engines.
Generally the surge will get worse the higher you turn the boost. If the sound is mostly once the turbo gets to full boost....does it go away after engine rpm climbs a bit? If so..definatly comp surge and pretty much nothing is going to fix it (adjusting bov, wg, mbc).
only way to fix comp surge on spoolup is to make the engine bigger or make the turbo spool slower, or run less boost.
Generally the surge will get worse the higher you turn the boost. If the sound is mostly once the turbo gets to full boost....does it go away after engine rpm climbs a bit? If so..definatly comp surge and pretty much nothing is going to fix it (adjusting bov, wg, mbc).
only way to fix comp surge on spoolup is to make the engine bigger or make the turbo spool slower, or run less boost.
Originally Posted by quickgti18t
yep it goes away after the rpm climbs past 20psi.. SOB i knew i should of gotten a ported shroud
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From: nc
Originally Posted by G20
What do you mean by the bold statement above?
What's happening is the turbo is moving more air than the engine can use. The excess air is pressurized, and is forcing its way back through the intake. It clears up at 6k rpm because only at higher rpm is the engine is finally able to flow enough air to alleviate this problem.
