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Top 2GNT Technical Turbo/Nitrous Tech topic #11550
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Subject: "Idle Vacuum w/ turbo..." Previous topic | Next topic
RyaN95i4Dec-03-01 06:29 AM
Old School 2GNTer
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#11550, "Idle Vacuum w/ turbo..."




          

just wondering what turbo guys vacuum is at...i think my idle vacuum is too low :/ ill have to check again for vacuum leaks, but i cant seem to find any, car runs fine..at idle its usually between 10-15 when warmed up...only time it drops to 18 is when i let off the gas while cruising :/. i know it should be around 18 NA, what about with boost...also, my idle is lower than normal, its at 700 which is ok, but it used to be a lil higher. related? things beyond the obvious to check?

thanks

95 Avenger
ATX->MTX Swap
Holset HX40 @ 26 psi

  

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TeamJasonESi_TDec-03-01 06:37 AM
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#11551, "RE: Idle Vacuum w/ turbo..."
In response to Reply # 0


          

It's easy to have a vacuum leak somewhere on that nylon vacuum line, but I don't worry too much. My vacuum at idle is anywhere from 15-17 and it's been that way forever. If you have the heat on, or especially the a/c or defroster, you can bet the vacuum is going to be around 13 or so...maybe less.

But your vacuum should be in that range. If it's noticeably closer to 10 at idle without anything on, look for vacuum leaks anywhere in your lines. It takes very little to skew the readings.

_____________________________________
Jason ESi-T

04' BMW 325Ci
91' Nissan 240SX
98' Eagle Talon ESi (sold)

  

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namelesseclipse (Guest)Dec-03-01 10:27 AM

  
#11552, "RE: Idle Vacuum w/ turbo..."
In response to Reply # 1


          

I thought I had a Vacuum leak when my idle was actually 15-20 but i test it out and had no vacuum leaks....It's just the way it's suppose to be i guess

  

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Avenger ESTDec-03-01 01:11 PM
Member since Nov 19th 2001
658 posts,
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#11553, "RE: Idle Vacuum w/ turbo..."
In response to Reply # 0


          

sounds fine to me man. 700 rpm and 10-15 in.hg. is about right.

bring it on............

A.D.P.
"...If you do too much, people become dependant. If you do to little, people loose hope. If you do it right, people won't be sure you've done anything at all."
bring it on...........

  

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