Microtech Boost gauge reading different than microtech
#1
Boost gauge reading different than microtech
Alright, I hooked up a boost gauge to the factory location on the S4, which is where the pressure sensor is...(on the UIM pointing towards passenger side.) And the Microtech feed is also on the UIM but on the bottom nipple pointing foward towards the rad (i believe there are 3 nipples intotal there). Now my Microtech reads more vaccum than my acutal boost gauge. I havent driven it yet to see any difference in boost readings, but i figure that it should be the same issue.
While Microtech reads lets say -20hg the gauge will read around 15-17 etc...
Any ideas?
I just remebered, i have my BOV on the same line as my gauge...Could it be that the bov is leaking at idle, so then the gauge is reading less, or would that affect everything?
While Microtech reads lets say -20hg the gauge will read around 15-17 etc...
Any ideas?
I just remebered, i have my BOV on the same line as my gauge...Could it be that the bov is leaking at idle, so then the gauge is reading less, or would that affect everything?
#3
Originally Posted by TonyTurboII
I would definately hook up the BOV to a different source, since it is open at idle.
BOV open at idle????? what???
never ever heard that before.
I have my gauge hooked up to the same line as my BOV (not the best spot I’m sure) and it reads the same as the Microtech. Your gauge might need to be recalibrated or the BOV is leaking like you said.
Last edited by turbo80cid; 08-30-05 at 11:59 AM.
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#8
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Originally Posted by turbo80cid
I will have to take your word for it because I personally don't know how it should work.......but if I had to guess I would say that it should be closed at idle.
I havent personally checked mine, but noticed another guy's fluctuating when they were checking his timing and thats when I asked.
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