Fp Red Boost Creep PLEASE HELP!!!!!!
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From: Cleveland, TN
Mellon yeah I was referring to my other fp red 
But here it goes I replaced my o2 housing with a buschur ported o2 housing (no dump tube). My boost still creeps just as much if not more.
I have had enough of trying to fix this I have had the hotside off the car like 4 times now!!!
But here it goes I replaced my o2 housing with a buschur ported o2 housing (no dump tube). My boost still creeps just as much if not more.
I have had enough of trying to fix this I have had the hotside off the car like 4 times now!!!
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Joined: May 2008
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From: new york
I bet anything the flapper is the main problem usually and almost in every situation a open dump pipe will not cause boost creep but lowers it compared to a stock o2 housing if i was you go to a pro that knows turbos or even send to forced performance to fix this problem because i know the feeling had a similar problem on my fully built grand national and the problem was the flapper on my turbo took me 1 month to fix the problem,or do what mellon said tune to 30psi if it goes more do aem meth kit and call it a day.
You should have tackled porting the entry radius to WG bypass port in the inlet area of the turbine housing while you had it off. It is a pretty easy job to DIY. If you decide to do it, let me know. I feel for you buddy!
Another alternative is to have Chris Melon tune around the creep. If he can tune your car to run knockless at 30# on 93, then he's golden. This would relegate that 3-4 PSI of creep to mere academic status. Take him up on his offer.
EDIT: I see that you had the turbine housing ported. What do you mean "fully ported"? The only area that needs to be ported to control creep would be the wastegate bypass port(s). Porting the turbine inlet area of the housing or the turbine discharge area is not going to help control boost rise. Now, if thay did, in fact, fully port the bypass port(s) turnin radius, which helps divert the exhaust flow from entering the scroll, then you've got a problem.
Did you take pics of the ported housing by any chance, especially the turbine inlet area which includes the bypass port(s) turnin radii?
Another alternative is to have Chris Melon tune around the creep. If he can tune your car to run knockless at 30# on 93, then he's golden. This would relegate that 3-4 PSI of creep to mere academic status. Take him up on his offer.
EDIT: I see that you had the turbine housing ported. What do you mean "fully ported"? The only area that needs to be ported to control creep would be the wastegate bypass port(s). Porting the turbine inlet area of the housing or the turbine discharge area is not going to help control boost rise. Now, if thay did, in fact, fully port the bypass port(s) turnin radius, which helps divert the exhaust flow from entering the scroll, then you've got a problem.
Did you take pics of the ported housing by any chance, especially the turbine inlet area which includes the bypass port(s) turnin radii?
Last edited by sparky; Feb 7, 2009 at 05:12 AM.
You should have tackled porting the entry radius to WG bypass port in the inlet area of the turbine housing while you had it off. It is a pretty easy job to DIY. If you decide to do it, let me know. I feel for you buddy!
Another alternative is to have Chris Melon tune around the creep. On 93 octane he should be able to tune your car to run knockless at 30# with the Red, no sweat. This would relegate that 3-4 PSI of creep to mere academic status. Take him up on his offer.
Another alternative is to have Chris Melon tune around the creep. On 93 octane he should be able to tune your car to run knockless at 30# with the Red, no sweat. This would relegate that 3-4 PSI of creep to mere academic status. Take him up on his offer.
If FP told Matt that the wastegate oulet pipe on the EPM dump could be restricting wategate flow, then it might be something to look into. I remember reading that the internal diameter of that pipe is a bit smallish, since their main design objective was to maximize the size of the main turbine outlet pipe to a full 3" diameter with a less restrictive bend radius.
They relegated the WG discharge opening on the EPM dumps smaller since it shares space next to the larger diameter turbine discharge opening. Yeah, I remember Robert Young(or someone?) commenting on the possible restrictive nature of the smaller diameter flange hole for the WG outlet on this particular design.
This could be an issue coupled with an unported WG bypass port(s). Possibly this would allow too much flow through the main scroll of the housing, as the unported bypass port(s) and the reduced diameter WG opening on the EPM dump flange, combine to "stackup" the exhaust flow in the turbine inlet area.
If it(exhaust flow) can't enter the wastegate bypass port due to a downstream bottleneck, then the exhaust gases are not bypassing the turbine wheel, instead they are continuing to flow on through the scroll and hitting the turbine blades, thus causing the creep.
They relegated the WG discharge opening on the EPM dumps smaller since it shares space next to the larger diameter turbine discharge opening. Yeah, I remember Robert Young(or someone?) commenting on the possible restrictive nature of the smaller diameter flange hole for the WG outlet on this particular design.
This could be an issue coupled with an unported WG bypass port(s). Possibly this would allow too much flow through the main scroll of the housing, as the unported bypass port(s) and the reduced diameter WG opening on the EPM dump flange, combine to "stackup" the exhaust flow in the turbine inlet area.
If it(exhaust flow) can't enter the wastegate bypass port due to a downstream bottleneck, then the exhaust gases are not bypassing the turbine wheel, instead they are continuing to flow on through the scroll and hitting the turbine blades, thus causing the creep.
Last edited by sparky; Feb 7, 2009 at 06:12 AM.
Yeah, Matt lives in Chris's area doesn't he? Have Chris log it, and tune it. What could be easier? It's worth a try.
Last edited by sparky; Feb 7, 2009 at 06:05 AM.