Help Fix, WG Flutter? [video inside]
Unfortunatly I have yet to see a 35r based external wastegate turbo with this setup... Both the ops and mine do not have this luxury... I will personally look into running it right after the turbo compressor cover, near lower ic pipe... see if its possible and if its more effecient
I'm going to try to figure this out changing some things up & I'll get back to u
As previouly mentioned... It is strickly in 5th gear.. When down shift to 4 th and then shift to 5th... Its fine.. Sounds like you have a different issue or more servere surge than the op...
<---- this guy right here... personally would use boost by gear v7 tephra tuning and limit the boost only in 5th gear for that narrow RPM band..... Don't really think you'll miss 30psi in 5th gear for ~800rpm's... then the problem will be solved.
but covering up a issue is far from what I call a good idea... Especially if all the op has to do is get a tb and im... Its super annoying but overcomes the bounce rather quickly... Immo, I think fixing a issue is much better than quick patch or turning a blind eye
BTW Mine does this in 4th as well but hardly never happens about 75% of the time in 5th
This is 100% compressor surge.
For some reason you're going wide open at low RPM in 5th...not sure why you would ever really NEED to do that...but that's the "problem" here. 5th gear really loads up the engine, spooling the turbo very quickly, all the while the RPMs don't climb very fast. As was explained earlier, the turbo is trying to pump full boost into an engine that can't take it yet, so it backs up through the turbo...aka compressor surge.
The best thing you can do is stop going wide open that low in 5th...or, as someone else said, downshift. The next best thing you can do, if you must go wide open that low in 5th, is tune 5th gear to spool slower down low, but still give you full boost in the upper RPMs after you would shift from 4th...like this guy said:
There's no band aid fix or covering up anything...the engine just simply cannot take in the air you're trying to feed it...so why keep trying to feed that much air?
Sure you can add cams, intake manifold, throttle body...whatever you want to help the engine breath better, and then it MIGHT be able to take in that much air that quickly, but then you're just throwing money at it hoping it helps. I would slow the 5th gear spool and stop the surging before I go throw money around...
For some reason you're going wide open at low RPM in 5th...not sure why you would ever really NEED to do that...but that's the "problem" here. 5th gear really loads up the engine, spooling the turbo very quickly, all the while the RPMs don't climb very fast. As was explained earlier, the turbo is trying to pump full boost into an engine that can't take it yet, so it backs up through the turbo...aka compressor surge.
The best thing you can do is stop going wide open that low in 5th...or, as someone else said, downshift. The next best thing you can do, if you must go wide open that low in 5th, is tune 5th gear to spool slower down low, but still give you full boost in the upper RPMs after you would shift from 4th...like this guy said:
Sure you can add cams, intake manifold, throttle body...whatever you want to help the engine breath better, and then it MIGHT be able to take in that much air that quickly, but then you're just throwing money at it hoping it helps. I would slow the 5th gear spool and stop the surging before I go throw money around...
You do have some good points. Throwing money hoping for a fix is a hit and miss. Tunning 5th to hit higher boost a little later. Might have to go with one of these options.
Now the question is.... who else has this compressor surge? Wouldn't most with close to my setup have this issue? If my enigne is starving for air, wouldn't others as well? From my understanding tuners don't tune in 5th(or per gear), they just tune load, so this in other words should be a common problem.
Also, yes i could technically shift down, but if i have a built motor, and the power is there to speed up in 5th, then why bother? (well until this is fixed, i sure will be shifting to 4th or not go wot in 5th).
Now the question is.... who else has this compressor surge? Wouldn't most with close to my setup have this issue? If my enigne is starving for air, wouldn't others as well? From my understanding tuners don't tune in 5th(or per gear), they just tune load, so this in other words should be a common problem.
Also, yes i could technically shift down, but if i have a built motor, and the power is there to speed up in 5th, then why bother? (well until this is fixed, i sure will be shifting to 4th or not go wot in 5th).
This is 100% compressor surge.
For some reason you're going wide open at low RPM in 5th...not sure why you would ever really NEED to do that...but that's the "problem" here. 5th gear really loads up the engine, spooling the turbo very quickly, all the while the RPMs don't climb very fast. As was explained earlier, the turbo is trying to pump full boost into an engine that can't take it yet, so it backs up through the turbo...aka compressor surge.
The best thing you can do is stop going wide open that low in 5th...or, as someone else said, downshift. The next best thing you can do, if you must go wide open that low in 5th, is tune 5th gear to spool slower down low, but still give you full boost in the upper RPMs after you would shift from 4th...like this guy said:
There's no band aid fix or covering up anything...the engine just simply cannot take in the air you're trying to feed it...so why keep trying to feed that much air?
Sure you can add cams, intake manifold, throttle body...whatever you want to help the engine breath better, and then it MIGHT be able to take in that much air that quickly, but then you're just throwing money at it hoping it helps. I would slow the 5th gear spool and stop the surging before I go throw money around...
For some reason you're going wide open at low RPM in 5th...not sure why you would ever really NEED to do that...but that's the "problem" here. 5th gear really loads up the engine, spooling the turbo very quickly, all the while the RPMs don't climb very fast. As was explained earlier, the turbo is trying to pump full boost into an engine that can't take it yet, so it backs up through the turbo...aka compressor surge.
The best thing you can do is stop going wide open that low in 5th...or, as someone else said, downshift. The next best thing you can do, if you must go wide open that low in 5th, is tune 5th gear to spool slower down low, but still give you full boost in the upper RPMs after you would shift from 4th...like this guy said:
There's no band aid fix or covering up anything...the engine just simply cannot take in the air you're trying to feed it...so why keep trying to feed that much air?
Sure you can add cams, intake manifold, throttle body...whatever you want to help the engine breath better, and then it MIGHT be able to take in that much air that quickly, but then you're just throwing money at it hoping it helps. I would slow the 5th gear spool and stop the surging before I go throw money around...
great info thou.
ty
I have to admit this would be worst case senerio/cheap quick fix for now...
but covering up a issue is far from what I call a good idea... Especially if all the op has to do is get a tb and im... Its super annoying but overcomes the bounce rather quickly... Immo, I think fixing a issue is much better than quick patch or turning a blind eye
but covering up a issue is far from what I call a good idea... Especially if all the op has to do is get a tb and im... Its super annoying but overcomes the bounce rather quickly... Immo, I think fixing a issue is much better than quick patch or turning a blind eye
The concern is ~if~.... if a new TB or IM may fix the problem... there is no guarantee, than ~if~ it doesn't fix it you're out over a grand?
No body needs 25-30psi of boost in 5th gear before 5k, there is no reason to have it on a low rpm 5th gear pull.... if you limit the boost specifically in this region, you still have your normal WOT 4th to 5th gear full boost...
but if the OP wants more power anyways... than go ahead and get the extra parts