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shawnschuldt

shawnschuldt

New member
Prolly a stupid question but is it normal for my map to not read any vacuum? at idle my car shows 4psi and the other shocker is i only have a 3.4 setup and at wot it reads a max of almost 21psi
 


its actually what my hp tuners is reading it with engine off it reads zero so im not sure if the sensor is bad or what
 
Or maybe you have clogged exhaust portions and a vacuum leak...i.e. bad converter/rotted vac lines?
 
not sure for exhaust i have ssac headers with no cat or resonator the only thing inline is some magnaflow muffs, and even so if i had a vacuum leak im not sure how i could get 4psi at idle lol

but the thing is could this be off in hptuners because my vehicle boost guage which i know is by far not accurate doesnt show any bars while sitting there

edit: oh and i just ported my supercharger and all the vac lines looked good
 


Well that doesn't sound right...any check engine lights?

Also...if your on a stock pulley...with headers...4 psi doesn't seem out of the question but at idle...something is a miss.

I'd still be willing to bet you have a vac leak somewhere or your BBV is toast since you said you just ported the blower.
 
ill look everything over again, i know the bbv works as ive seen it actuating while manually pullling the throttle cable under the hood. i dont have a stock pully i have a 3.4.

it runs fine and there is no codes i was just starting to scan and tune and noticed it idled around 4psi and wot im seeing like 21psi which im pretty sure isnt true on a 3.4 with headers and nothing but muffs
 


hp tuners can read it in both i just went to properties and changed it from kpa to psi if it read it in kpa it reads between 28-29kpa

sorry im still new at most this stuff i just have a little general knowledge
 
Edit: Sorry guys i got it figured out i thought it showed zero when the car was off but actually it shows 14, so i guess my next question is does the map being off hurt anything?
 
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