 boost low |
 Mar 26, 2009 - 10:04 PM
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Enthusiast  Joined Feb 2, '09 From new orleans La. Currently Offline Reputation: 5 (86%)  |
ok my problem is that my boost is not reading what it should. When I first got the swap done boost would be about 8lbs in 1st and 2nd and about 11-13lbs in 3rd 4th and 5th gear now I have 8lbs in 1st 2nd 3rd and 4th gear and 12-13 lbs in 5th only. The power is missing from what I had. because of the lower boost. now I had a mbc and had it set to high for maybe 2 miles and hit 17-18lbs pretty much ran open boost but not for long I hit fuel cut and removed the mbc. Now I have lower boost, is my turbo going out? The boost takes longer to build now also. can my acuator be bad? tvis bad?
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Mar 26, 2009 - 10:16 PM
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 Enthusiast Joined Apr 4, '05 From ST PAUL, MN Currently Offline Reputation: 3 (100%) |
what kind of turbo? 3s or 5s? sorry questions i have to ask first
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Mar 26, 2009 - 10:28 PM
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Enthusiast Joined Feb 2, '09 From new orleans La. Currently Offline Reputation: 5 (86%) |
3sgte swap ct26 unknown milage on turbo, and when I hook up mbc I cant hold boost it just does what it wants on the mbc lowest setting. But I did not hose clamp the hoses on the tvis block off
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Mar 26, 2009 - 10:53 PM
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Enthusiast Joined Apr 4, '05 From ST PAUL, MN Currently Offline Reputation: 3 (100%) |
humm boosting like that isnt cause by a bad turbo if u had a bad turbo your car wouldnt boost at all..im not sure about your tvis but is your afm is working correctly do u have any leaks in your piping(only if your runnin front mount) other then that you mbc should have help a little...humm..u said the boost is takin long to build might mean u are having boost leak issues..
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Mar 26, 2009 - 11:40 PM
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Enthusiast Joined Feb 2, '09 From new orleans La. Currently Offline Reputation: 5 (86%) |
No its not a boost leak, because I had 2 solid pipes made I had boost leaks with my old fmic pipe kit with couplers and elbows but now its 2 solid pipes connected by couplers to the tb,turbo and fmic and there double clamped with t clamps so I am 99.9% sure there no leaks. how many lbs do you lose on a ebay fmic can it be 1-2 lbs I know theres a presure drop when you get get a fmic. And my turbo sounds more high pitch. an€d 1 more question do es anyone have a air sound coming from there a/c idle valve its the bolt with a spring going to a bunch of vacum lines hear it now but did not hear it before and all hose are on good
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Mar 27, 2009 - 12:02 AM
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 Enthusiast Joined Aug 31, '02 From Philadelphia, PA Currently Offline Reputation: 8 (100%) |
Get a fuel cut defender.
Install a good quality ball and spring mbc. set boost to 14psi in 4th gear. enjoy the car. ps. youll feel faster spool with an mbc then without one. -------------------- 15PSI - 30MPG - Megasquirt Tuned
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