bucking on throttle off.. compressor surge?
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From: Between the Blue and the Sand
in mid corner at the limits of adhesion, you would be stupid to just lift throttle completely. In just about any car you would put the back end in front with that kind of stunt.
But that being said, the Evo does respond quite well to very light throttle modulation in the corners.
SC~
But that being said, the Evo does respond quite well to very light throttle modulation in the corners.
SC~
BTW i heard compressor surge only at very light throttle.. (get an intake and u can hear it) and only ~1-5psi of boost.. Now i have a greddy type-s with one spring removed and have NO problems.. and it doesnt leak
Thanks for the replies fellas,
I think it was manily just my lack of familiarity (sp) with the car. It scared me a bit because of my past with the turbo 7. Chimp's point is taken and I must have been high when I wrote that part about lifting mid corner, since you would never really step out of the gas like that you would typically be featherin the throttle not stomping and snatching.
I will take MrAWD's advice and check the hose connections. On a side note, I did manage to have the turbo inlet hose come loose yesterday on my way to work, on the boost hard in first and second pulling out into traffic, quick full boost in third then off the throttle... it stated hesitating and running like crap so I pulled off into the median, couldn't find any loose hoses but figured it was sucking unmeterd air, got towed to the dealer where they said they checked all the hoses and found that the clamp on the turbo inlet was loose enough to spin around the hose. I din't think you would be able to "blow off" a hose at the inlet since that section is open to the atm via the filterbox etc.
I think it was manily just my lack of familiarity (sp) with the car. It scared me a bit because of my past with the turbo 7. Chimp's point is taken and I must have been high when I wrote that part about lifting mid corner, since you would never really step out of the gas like that you would typically be featherin the throttle not stomping and snatching.
I will take MrAWD's advice and check the hose connections. On a side note, I did manage to have the turbo inlet hose come loose yesterday on my way to work, on the boost hard in first and second pulling out into traffic, quick full boost in third then off the throttle... it stated hesitating and running like crap so I pulled off into the median, couldn't find any loose hoses but figured it was sucking unmeterd air, got towed to the dealer where they said they checked all the hoses and found that the clamp on the turbo inlet was loose enough to spin around the hose. I din't think you would be able to "blow off" a hose at the inlet since that section is open to the atm via the filterbox etc.
mad_VIII the dealer that told you that hoses that clamp on the turbo inlet was loose enough to spin around the hose was that causing bucking on throttle off.. compressor surge on the Evo VIII.
Last edited by intimidator2000; Jun 11, 2003 at 06:16 AM.
Originally posted by intimidator2000
mad_VIII the dealer that told you that hoses that clamp on the turbo inlet was loose enough to spin around the hose was that causing bucking on throttle off.. compressor surge on the Evo VIII.
mad_VIII the dealer that told you that hoses that clamp on the turbo inlet was loose enough to spin around the hose was that causing bucking on throttle off.. compressor surge on the Evo VIII.
i've noticed this in my oz rally in the lower gears and especially at mid to low rpms. i think any car will do this, just the physics of taking the power out of the drivetrain all at once.
Originally posted by intimidator2000
mad_VIII how is the the throttle off.. compressor surge on the Evo VIII are you still having that problem.
mad_VIII how is the the throttle off.. compressor surge on the Evo VIII are you still having that problem.
mad_VIII what have you done to stop having the throttle off.. compressor surge on the Evo VIII.
mad_VIII what is the cause of the throttle off.. compressor surge on the Evo VIII.
mad_VIII what is the cause of the throttle off.. compressor surge on the Evo VIII.
Last edited by intimidator2000; Jun 13, 2003 at 07:08 PM.
Originally posted by intimidator2000
mad_VIII what have you done to stop having the throttle off.. compressor surge on the Evo VIII.
mad_VIII what is the cause of the throttle off.. compressor surge on the Evo VIII.
mad_VIII what have you done to stop having the throttle off.. compressor surge on the Evo VIII.
mad_VIII what is the cause of the throttle off.. compressor surge on the Evo VIII.
After living with the car for a couple of months I don't think it ever was compressor surge that I was describing.... I think like others have said that it's just the car making a rapid shift from acceleration to deceleration combined with the ecu re adjusting (seems to desitate a bit anytime you go from boost to vacum and back to boost again).
As far as getting rid of the symptoms I described, I just avoid the situation that was causing it. In other words I wait till I have a clear stretch of road before I get on the boost, and If I have to step out of the pedal I try to do it smothly and not as suddenly.
Originally posted by intimidator2000
mad_VIII the throttle off compressor surge does it happen to all turbo cars.
mad_VIII the throttle off compressor surge does it happen to all turbo cars.
Originally posted by intimidator2000
The throttle off compressor surge is it a rough ride or do you not feel it that much.
The throttle off compressor surge is it a rough ride or do you not feel it that much.
Originally posted by intimidator2000
I mean does all turbos cars have throttle off surge.
I mean does all turbos cars have throttle off surge.


