No muthafu*king boost..
After installing MS on my greddy setup I'm not getting boost over 5psi. The limit set on MS is 11psi and I've adjusted the WGA/MBC over and over again, but same result. It gets up to 5psi of boost when cold, but when all warmed up it gets down to 3-4psi only.
I unhooked the WGA hose from MBC and got only 3psi steady. ( I thought it would be at least 7PSI) I have yet to try Joe Perez's way by hooking up the lines to the cold pipes rather than the compressor itself. I am going to though, I'm currently waiting for the JB welds to dry on the barb on the cold pipe. I have a helper spring on my wastegate, but it doesn't seem to help for shit.. I took off all the pipes to check for leaks; nothing. I'm still a :noob: |
What's happening when you are getting to 5psi? Is it breaking up (like hitting a rev limiter) or is it just continuing to pull (albeit slowly).
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Is the wastegate stuck open? Try opening and closing it by hand
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Originally Posted by pdexta
(Post 602063)
What's happening when you are getting to 5psi? Is it breaking up (like hitting a rev limiter) or is it just continuing to pull (albeit slowly).
Originally Posted by miataspeed2005
(Post 602064)
Is the wastegate stuck open? Try opening and closing it by hand
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Originally Posted by caideN
(Post 602065)
It's a steady 5PSI, when it gets up to higher RPMs it sounds like the engine about to blow, but it's still picking up speed, but slowly. I initially thought it was the clutch, but it ran fine at 7PSI w/o MS back then. I tried some diagnostics and it seems like the clutch is fine.
It's not stuck open. Even took out the DP to check, it was fine. |
Originally Posted by Marc D
(Post 602066)
That's really weird man. If you can't figure it out this week, call me up, well try to figure it out.
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What's your wideband say?
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Originally Posted by curly
(Post 602151)
what's your wideband say?
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So I did Joe Perez's way of connecting the MBC to the Cold pipes. Same problem
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Is this suppose to be loose? I checked the shaft play and it was fine, but then that piece came loose.
http://i27.tinypic.com/etbodv.jpg http://i31.tinypic.com/5nkffn.jpg |
Yes, the heat shield will move around a bit until you put on the turbine housing.
Does it spin freely? It looks like there's quite a bit of oil on the exhaust side. Does it have so much play that it could twist and bind on either housing? Does it even have the heat shield on it? It's hard to tell from the pic, your art skills are covering it up. |
Originally Posted by lordrigamus
(Post 603203)
Yes, the heat shield will move around a bit until you put on the turbine housing.
Does it spin freely? It looks like there's quite a bit of oil on the exhaust side. Does it have so much play that it could twist and bind on either housing? Does it even have the heat shield on it? It's hard to tell from the pic, your art skills are covering it up. |
How about any questionable couplings? May be a boost leak somewhere? Are you lifting the BOV under boost?
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Originally Posted by lordrigamus
(Post 603296)
How about any questionable couplings? May be a boost leak somewhere? Are you lifting the BOV under boost?
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Are you running a BOV?
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