Vacum readings????
04-12-2009, 10:05 PM
#1
Intermediate
Thread Starter
Join Date: Jan 2009
Location: SOUTH FLORIDA
Posts: 36
Likes: 0
Received 0 Likes
on
0 Posts
Vacum readings????
hey folks,
what kind of vacum readings are you getting at idle(warmed up of course) and at cruising speeds? i'm only reading about 14 inches at idle and less at lots of different cruise speeds. i'm trying to see if i'm in the ballpark, or if i need to look for something going on. car runs well, have checked for vacum leaks, and have an Autometer Boost/Vacum guage installed. any and all input is welcomed!! thanks
marco
mods on the car are APE MAF w/chips, Mufflex 3"catback exhaust, LRBE and a mildly ported cylinderhead w/fresh valve job
what kind of vacum readings are you getting at idle(warmed up of course) and at cruising speeds? i'm only reading about 14 inches at idle and less at lots of different cruise speeds. i'm trying to see if i'm in the ballpark, or if i need to look for something going on. car runs well, have checked for vacum leaks, and have an Autometer Boost/Vacum guage installed. any and all input is welcomed!! thanks
marco
mods on the car are APE MAF w/chips, Mufflex 3"catback exhaust, LRBE and a mildly ported cylinderhead w/fresh valve job
Last edited by marcodarq; 04-12-2009 at 10:07 PM. Reason: new stuff
04-12-2009, 10:26 PM
#2
Nordschleife Master
I am seeing 19-20''hg at warm idle, that is with every hose and vacuum line replaced.
Cruising on the highway, it varies..but a perfectly flat road, with the throttle just barely open to maintain my speed i usually see between 15-18''hg. This will vary depending alot on road conditions, like if the road is perfectly flat or if im going uphill (uphill i will see much lower vacuum #'s).
Mods should not have much effect on vacuum #'s unless you are running a cam also.
Cruising on the highway, it varies..but a perfectly flat road, with the throttle just barely open to maintain my speed i usually see between 15-18''hg. This will vary depending alot on road conditions, like if the road is perfectly flat or if im going uphill (uphill i will see much lower vacuum #'s).
Mods should not have much effect on vacuum #'s unless you are running a cam also.
04-12-2009, 10:30 PM
#3
Burning Brakes
Join Date: Oct 2007
Location: Blacksburg, VA
Posts: 891
Likes: 0
Received 0 Likes
on
0 Posts
18-19"hg at warm idle. Vac while driving depends on how you're driving, hill/flat. Try to keep your gauge on the psi side, then you wont be worried about your vac! haha
