I spike to 10 psi and as i apraoch redline it drops to near 7 psi it was fine this morning. i hope turning up the MBC helps me fix this. Would anything else cause this besides WG issues?

 

internal or ex?

 

internal stock 16g WG before i ran 8 psi with just WG and i had the MBC on there and was making a good 10 psi across the baords before

 

well...the MBC would cause it to spike because it's just a ball and spring... is this what u are talking about? it spiking and then dropping ?

 

no before it went to 10 psi and held steady +-1 psi now it is droping down to like 6 psi around redline.

 

ohhhh...dang... possible BOV leak? if you're boosting more.

 

no bov in place

 

if it were Externally gated i'd say take the MBC off and adjust it to 6-7 psi and then put the BC on to adjust it up to 10.... BUT lol

are u using a bleeding MBC?

i don't know, how often do wg springs go bad?

 

How is spool? Exhaust leak could cause this.

 

spool is good here is a log. Ive had exhaust leak i get boost the same as before but it does not carry for ****.

 

Its probably from not having an intercooler and no proper crankcase ventilation system.

 

that was just mean.

 

My experience with an exhaust leak from turbo to manifold limited my boost to about 7psi and spool sucked a bit.

 

that's why i asked if you had an open wastegate line, your boost didn't seem to spool like it should....try a helper spring and see how it reacts.

but you're dropping to 5psi, the actuator must be toast...

 

i was criuseing and then going into spool to make sure my tip in was right and most of the time i was launching the car, only 1 or twice did i let it caost down and start sub 2K rpm and see if the spool was the issue.

 

well as of 2 minutes ago i am thinking it is the clutch my other WG feels about the same and i even ran with No line on the WG and it still dropped after 4K rpm. So i will bleed it later and hopefully that solves the problem :( god damn ACT extreme with 4 puck unsprung disk should be tougher than that damn you prostreet.

 

with an internal gate, hook up a line to it and blow in it. If no air leaks, its proably still good. if the diaphragm is ripped, you will have a leak

 

i highly doubt it's your clutch...

whats weird I'm looking at your datalogs, and i guess maybe your 4th gear pulls from down low your wastegate hits and maintains 8psi....but with your gun it through the gears it looks like you are spiking a 8-9psi and dropping to 4.

If it was your clutch then the RPMs would rapidly increase, your rpms are still very linear.

 

yes but i totally disconected the WG from vaccum source i tried it with my hand pump and it takes 12psi to actuate just fine. I think it is only slipping enough to unlaod me becouse the power falls off with the boost. And if my WG was shot internally i would never hit 10 psi. Like i said i will bleed it unless there would be a reason my motor wouldn't put out 10 PSI towards redline?

 

did you drive that way? how did it react then?