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Discussion Starter · #1 ·
Hi guys hope you having a great day

I need your help about the issue in my supercharger just finish rebuild and all went well no knock no misfire

the problem is when we hit the car on the dyno it only read 9 psi before it reaches 15-16 psi tried Already adjust the solenoid valve still same issue.

Is it possible anyone have this valve or actuator in the pictures failing before ?


car has : 2.38 upper, stock lower,Airaid,Kooks headrs and xpipe- bullet mufflers,ice tank,vadder intercoolers,custom cam 222/228 duration lift 615 loop separation 118
 

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Discussion Starter · #3 ·
Did not get you brother

My point is that the car put down 588 before ( 100kpa) 14.5psi
Now only 390 hp and around it

it not about the numbers

the precise reading I took from the EFI before was 14.5 to 16 psi
 

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What hardware changed between the old readings and the new run?
 

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Discussion Starter · #8 ·
The internal rebuild parts : Pistons, connecting rod, camshaft, oil pump etc. + the cooling stuff, mighty mouse catch can and these mufflers

 

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Did that for supercharger all good
If you're down gobs of power, it's probably worth doing again.

While you're doing it is a great time to inspect plugs, wires, injector Harnesses, etc. Check the coolant and the oil for contamination.

Does the car idle and drive well? Any other symptoms that might help steer the discussion?

Sent from my SM-G991U1 using Tapatalk
 

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There's a bunch of posts on here about that bypass actuator. Make sure it is adjusted right or it could be leaving the bypass door not fully open. Also test it with a mittyvac. Someone could have put it on wrong or swapped the hoses.

Another thing is with headers you probably aren't going to build 16lb boost you are moving more air through. Also you did not mention if your build significantly increased displacement or not. That much drop in power seems to me to be timing or something
 

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Probably the gasket.

Sent from my SM-G991U1 using Tapatalk
 
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