Forced Induction - 4 psi on a 7.25 spring?
09-16-2006, 09:02 PM
Just upgraded my custom rear mount, with a tial 44mm wastegate. Spring was a 7.25 but I only see 4 at the engine :bang: . do I need ti get a 14.5 to get 8 at the engine or what are any other rear mounts running to get around 8 psi. Also put in a tiall 50mm BOV with 11 psi spring. Under light boost/ letting off I still get the rattle snake sound, Car pulls 21" at Idle should I try the 9psi spring?
09-16-2006, 09:04 PM
I'd get a manual boost controller that way you won't have to play guess and check with the spring.
09-16-2006, 09:26 PM
Run the wastegate boost reference from the intake manifold instead of the compressor housing.
09-16-2006, 10:14 PM
thanks for the idea's I'm gonna get a manual boost controller. But that was not the problem. I was thinking a 3.5 psi drop was too much even with a FMIC so after checking everything out, I found I left a compressor cover bolt off,because it didn't clear my oil resovoir. Problem was that the bolt hole goes in to the compressed air. :bang: Of the Six bolts on the cover this was 1 of two that go into the pressurized air. :bang: :bang:
09-17-2006, 08:28 PM
If its any help I have the a44mm tial WG too and I used a 2lb spring to make 4lbs (front mount), and yours being a rear mount might make it less pressure to push against the spring so you would need a less spring to make more boost. I dont know, just an idea.
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