Boost ok to taper even with bolt ons?
#1
Avoiding the tree lane
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Boost ok to taper even with bolt ons?
It's nice and warm (50f lol) so I went out and checked to see how the boost pattern was doing, i'm finding it makes 10psi to 4500, comes down to 8psi like it should, goes to ~11psi then after 6000 or so it comes down to ~8-9psi to redline, I think my last one acted like this too... only mods are apexi intakes/downpipe/greddy catback, stock cat in place
sound normal? i'm not using any methods of boost control other than stock
sound normal? i'm not using any methods of boost control other than stock
#3
Avoiding the tree lane
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Originally Posted by adam c
I don't think it should drop off that much. How many miles on cat?
#6
Lives on the Forum
^ Yep. Perfectly normal and how it's supposed to work.
Bone stock the boost pattern is 10-8-10 until about 6500 when it drops to 8 again. The ecu bleeds off a little boost at high rpm.
You never hear it mentioned but in fact the stock boost pattern is 10-8-10-8.
Bone stock the boost pattern is 10-8-10 until about 6500 when it drops to 8 again. The ecu bleeds off a little boost at high rpm.
You never hear it mentioned but in fact the stock boost pattern is 10-8-10-8.
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EliteHardcoreCannuckSquad
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Mine did that too but it would drop around 5500-5800 rpm. It wasnt caused by exhaust restriction either... The stock ecu was consistantly dropping boost to exactly 8psi at those rpms. I patched into the wastegate control solenoid and monitored the pattern. Like rynberg, when I switched to a boost controller and took the solenoid out of the equation, the problem disapeared.
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