Overboosting sort of
#1
S5 6-port block
S5 turbo
FMIC
2.5-3" exhaust
My issue is this time around with this setup I've had some boost control issues. My old HKS EVC was having trouble keeping the boost steady at 10psi. Took it off and just ran the wastegate.
The boost controller was working fine, holding boost with the same exhaust/intake, when the last motor blew. So, I've been doing some troubleshooting to see if it really was the problem. Today I unhooked to wastgate actuator from the wastegate just to see what the wastegate port was actually doing. Did a full pull in 3rd. Boosted (slowly) to 10psi then creeped DOWN to 5-6. Is this right?
I'm just trying to eliminate possible factors to my boost controller issues.
S5 turbo
FMIC
2.5-3" exhaust
My issue is this time around with this setup I've had some boost control issues. My old HKS EVC was having trouble keeping the boost steady at 10psi. Took it off and just ran the wastegate.
The boost controller was working fine, holding boost with the same exhaust/intake, when the last motor blew. So, I've been doing some troubleshooting to see if it really was the problem. Today I unhooked to wastgate actuator from the wastegate just to see what the wastegate port was actually doing. Did a full pull in 3rd. Boosted (slowly) to 10psi then creeped DOWN to 5-6. Is this right?
I'm just trying to eliminate possible factors to my boost controller issues.
#2
Top Down, Boost Up
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So you disconnected the wastegate actuator and left the door to move freely? If so, the expectation would be little to no boost if the wastegate port size is large enough to bypass enough exhaust. But with the door able to move on its own, I'd wonder if the main exhaust flow could be forcing the door closed. It'd have to be wired open to be sure that doesn't happen.
What was the result when you ran off the wastegate spring alone?
What was the result when you ran off the wastegate spring alone?
#4
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Here's a good "How to" -> FC3S Pro: S5 Wastegate Porting
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