Help! boost peaks, then drops

[TheSubaruJunkie]

Yeah my controller is made by Go Fast Bits, but its the same exact thing as shown in that ebay add. Even boxed the same.

 

I only say this cause the problem you are having is the reason I dumped my home depot controller and spent the money on a real one. The real one builds boost alot faster and holds it steady where-as the home depot would run at 7psi sometimes 9psi, and i was affraid it would reach 12+ if I really pushed it. It was also real slow at producing boost.

 

Cant explain why.

 

-Brian

[mm88swrt]

put a softer spring into the boost controller. i had the same problem and a softer spring say out of a pen or whatnot seemed to work better than the spring i got from the parts store

[Turbone]

I tried that. Didnt make any difference.

[Hondasucks]

Back to the low compression numbers:

 

Did you have all four plugs removed and the throttle wide open when you did the compression test? If you didn't, it will cause a low reading...

 

I'm inline with the others though, I think it's your MBC... My turbowagon doesn't have an MBC, it's all stock, but when you hammer on it it will spike to 15psi and then drop to 8.. (Methinkie it has a sticky wastegate....)

[Turbone]

Back to the low compression numbers:

 

Did you have all four plugs removed and the throttle wide open when you did the compression test? If you didn't, it will cause a low reading...

 

I'm inline with the others though, I think it's your MBC... My turbowagon doesn't have an MBC, it's all stock, but when you hammer on it it will spike to 15psi and then drop to 8.. (Methinkie it has a sticky wastegate....)

 

I realised later that I should have removed all the plugs. But even with the current readings, I knew I had one toasted cyl. Not to mention the smoke, the low power, the knock, you get the point:-\