does this boost curve seem normal to you?
#1
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does this boost curve seem normal to you?
Hi everyone, im currently tuning my car and my tuner opened my eyes on something, check out this boost curve
look at the dip after initial boost. sometimes i can feel it on partial throttle as well (like 8 psi or so). car has stock motor stock turbo stock cams, bolt ons only, and a Grimmspeed EBCS. did a boost leak test, fixed them all, tested the wastegate actuator with a bicycle pump, it "Started" opening at ~14PSI opens fully at like 15 or 16 psi.
any suggestion or ideas?
your help is much appreciated.
look at the dip after initial boost. sometimes i can feel it on partial throttle as well (like 8 psi or so). car has stock motor stock turbo stock cams, bolt ons only, and a Grimmspeed EBCS. did a boost leak test, fixed them all, tested the wastegate actuator with a bicycle pump, it "Started" opening at ~14PSI opens fully at like 15 or 16 psi.
any suggestion or ideas?
your help is much appreciated.
#4
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Yeah after 5000 rpm is fine i understand that this is what the stock turbo like, but that dip is concerning me since my tuner is asking me about it, is there somthing mechanically i could check? As far as i can tell the WGDC correction when i log is always 0.
#7
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#11
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I didn't exactly test the bov itself, just a normal boost leak test, but i did swap it with hks ssqv4, and the same thing happens.
Also i did notice today when i hold the RPM on 5k on forth gear then go WOT it does the same dip, goes down to 22 then 25 then tapers 21 at 7k. I really don't think this is normal behavior.
Also i did notice today when i hold the RPM on 5k on forth gear then go WOT it does the same dip, goes down to 22 then 25 then tapers 21 at 7k. I really don't think this is normal behavior.
#15
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