1stGenTSi
15+ Year Contributor
- 323
- 1
- Apr 8, 2005
-
Austin,
Texas
Ok, so I'm getting compressor surge under two different situations with my HX35 in .55 ar housing. First off I hear it when slightly accelerating (enough to build a few psi) and then letting off the gas slightly but not all the way. Like going from ~30% throttle down to ~10%. This happens to me often when speeding up and slowing down on the highway. I have to let all the way off the gas quickly in order for it not to surge under this condition. I assume this can be fixed by adjusting the bov (Greddy RS) but I haven't had much luck.
The second situation is if I hold it at around half throttle for a little while, like trying to accelerate from 60 to 80 or so on the highway. When this happens the boost gauge will flutter back and fourth rapidly from about like 10-15psi. I believe the turbo must be putting out more air than the motor can ingest at this point. You can feel the engine stuttering a little bit as the boost fluctuates.
So what's the deal, can I just like never go part throttle any more? Isn't the ported cover supposed to prevent this? I'm almost ready to put my evo 3 16g back on. I never had any of these issues with it.
Turbo is 8 blade hx35 in .55ar housing. Running external 38mm off o2 housing. Both these problems happened with both 1g BOV and Greddy type RS. Any help is greatly appreciated. Thanks.
The second situation is if I hold it at around half throttle for a little while, like trying to accelerate from 60 to 80 or so on the highway. When this happens the boost gauge will flutter back and fourth rapidly from about like 10-15psi. I believe the turbo must be putting out more air than the motor can ingest at this point. You can feel the engine stuttering a little bit as the boost fluctuates.
So what's the deal, can I just like never go part throttle any more? Isn't the ported cover supposed to prevent this? I'm almost ready to put my evo 3 16g back on. I never had any of these issues with it.
Turbo is 8 blade hx35 in .55ar housing. Running external 38mm off o2 housing. Both these problems happened with both 1g BOV and Greddy type RS. Any help is greatly appreciated. Thanks.