i am chasing a low vacuum on my le2.2 new build i have a reading of around 70 kpa have installed a pcm for less tune. still the same i know the le2.2 has a real low lsa. I was wondering what you gys areat at a hot idle. no external vacuum leaks, but is there any tricks to check if the intake is leaking internally into crankcase? on chryslers we used to plug all breathers and check the vacuum at one outlet. there was a set value we went by to determine if it was leaking. i dont think it would work with a lt1 unless someone has a trick to diagnosis this. i know i will not have 30 kpa like a stock lt1, just wondering what i should be at and what your idel is set at. if you have a diferent le cam please post. the lsa is close may give me a idea .wont be abel to check to this week to determine if its a ground ishow or a true low vacuum or pcm.

thank you in advance

pat

 

I'd like to know too. I have a custom cam from Lloyd Elliot for my LE1 heads and only pull 10 pounds at idle.

 

ane one please

 

Do you really mean "pounds"? Vacuum is usually measured in inches of mercury ("Hg) or kiloPascals (kPa).

 

ment kpa sare

 

I'm heavily medicated at the moment, but yes, thats what i meant.

 

please post some map redings .or do you gys not check your tuns after a mailorder tune or dino. ane one with a data master log with a big cam that i can check out to see please send to 95fire@gmail.com