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This is a strange one.
I have an aftermarket autometer gauge...
If I have my MAF connected I can't boost past 2 psi.
But If I disconnect it I can boost to 12psi but I blow out black smoke.
Would this be a bad MAF sensor? or a bad boost leak? Vac leak?...
Started by dirty3kgt on
, 9 posts
by 5 people.
Answer Snippets (Read the full thread at 3si):
It couldn't be a boost leak as it would happen regardless of having the MAF plugged....
Would this be a bad MAF sensor? or a bad boost leak? Vac leak? It would have to be a pretty bad leak undrivable.
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Hi all,
Just been out in the bora to do some logging. All went well, I logged group 003, 010 and 011.
From these i have created graphs...
Graphs from 1st log-
Boost
Group 010
Group 003
Then i did a seccond log. Graphs -
Boost
Group 010
Group 003
Can somebody...
Started by aham_uk on
, 13 posts
by 4 people.
Answer Snippets (Read the full thread at uk-mkivs):
Your boost is controlled by vacuum, a vac leak would give under boost or irregular boost to ....
Thats all engine wise! MAF = fine
Boost = first overshoot is ok then apears boost.
And uprated hard pipes...
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I have a boost leak and i cant find it when it gets over 8 psi it squeals like a pig, could it be the intercooler?
Started by t5frankie on
, 20 posts
by 6 people.
Answer Snippets (Read the full thread at volvot5):
Yes mate i hope its not the ....
You've found leak metal tube? and put where? Just put it on a boost hose, use an old one cut for a leak on the TDI
Cut a circular piece of MDF or similar the same size as the pipe onto the maf.
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Ask your Facebook Friends
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I replaced the maf sensor, no change still no boost.The n109 valve is intermittent.Do I need to erase the codes?Does anyone have any Idea about a high sensor reading?This was measured at a repair shop,I have had boost only about 4 times in 20000 miles...
Started by acoustictdi on
, 2 posts
by 2 people.
Answer Snippets (Read the full thread at tdiclub):
I am not a mechanic but reading some posts it my be leak on air.
It back on the power is restored.
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I replaced the maf sensor, no change still no boost.The n109 valve is intermittent.Do I need to erase the codes?Does anyone have any Idea about a high sensor reading?This was measured at a repair shop,I have had boost only about 4 times in 20000 miles...
Started by acoustictdi on
, 2 posts
by 2 people.
Answer Snippets (Read the full thread at 166):
I am not a mechanic but reading some posts it my be leak on air.
It back on the power is restored.
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I provided a writeup that explains the how and why of boost leak testing. It seems that many are unclear on all the details and rationale of this important test. I developed this protocol specifically for the Mitsubishi EVO community, but the same steps...
Started by Ted B on
, 20 posts
by 17 people.
Answer Snippets (Read the full thread at bimmerforums):
One leak I've always had, with two brand new turbos (SPA, and Precision) were leaks this....
leaks AFTER the maf sensor will cause you to run lean when not in boost and rich when in boost to be stickied! Good guide.
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I disconnected the MAF and didn't notice any change in performance. Does this mean I need a new one?
Started by by stavnshell on
, 13 posts
by 8 people.
Answer Snippets (Read the full thread at ttforum):
A boost leak, just needs someone who knows what they are doing, we all know what some garages are like a boost leak, just needs someone who knows what they are doing, we all know what some garages are like i would recomend....
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Okay.This is my first shot at buying a modified car. I'll list the mods below, but here's whats been happening. Lately over the past week or so under hard acceleration, sometimes instead of a constant build of boost, I heard a slight airy 'chatter or ...
Answer Snippets (Read the full thread at legacygt):
Would be my guess Wastegate flutter? Can you hear it in the exhaust noise... .
Clean the maf sensor? check for airbox leaks? boost turbo air leak causing overboost and lean condition.
Savvy as this is my 4th subaru but im stumped .
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So I need to get my MAF out of the charge pipes (Need to move it pre-boost) and want to know if anyone has any suggestions on this matter? Gauge of wire, best ways to go about doing so to prevent CEL's, etc.
If you have any tips let me know, thanks!
-...
Started by oCTaNe on
, 21 posts
by 6 people.
Answer Snippets (Read the full thread at newtiburon):
But if the MAF is under boost in the charge pipes, wouldn't that mean there is a higher volume! xD
I think I'm going to....
Compression from the boost goes away, the MAF is getting super confused and is going to have problems.
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Ok, so I did a boost leak test yesterday after work and will do another in about an hour or so, I have a good seal on my tester and I'm using shop air. My boost gauge will only reach 10psi during the test hold air for about 5 seconds. I can hear air escaping...
Started by zerq on
, 15 posts
by 6 people.
Answer Snippets (Read the full thread at dsmtuners):
I'm just happy I found the boost leak so I can feel? You can leak out of....
I'm just happy I found the boost leak so I can likely seek out another Tbody in the process.
Most likely seek out another Tbody in the process.
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