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View Full Version : intake vacuum question..?



teh_mugen18
11-28-2008, 06:41 PM
I did something to my throttle body, and on the AFC it used to give me a vacuum of ~548 - 560 mmHg at idle. Now, since the mod its showing me a vacuum of ~560 - 570 mmHg at idle.


Exactly what do these numbers mean, and what kind of fuel correction would be alright for this extra vacuum i'm seeing? Right now, i just added +1% from 4000rpms on up.

redrumracer
11-28-2008, 06:42 PM
dude, maybe you should go to a school for mechanics. i mean your always asking questions.

Scotsman
11-28-2008, 06:48 PM
do you have a haynes or chilton manual?

teh_mugen18
11-28-2008, 06:58 PM
dude, maybe you should go to a school for mechanics. i mean your always asking questions.

lol i am in a school for that already, but they dont teach anything like what the level that im on. They only teach introductory things like how a cooling system works, etc., and it doesnt help that 90% of my class is completely retarded when it comes to cars...:ninja:

teh_mugen18
11-28-2008, 06:58 PM
do you have a haynes or chilton manual?

Nope. What im askin is about how i should tune my vafc lol

Scotsman
11-28-2008, 07:00 PM
Nope. What im askin is about how i should tune my vafc lolmy :2cents: is for you too pick up one or the other , you would be surprised at how much info is in them

teh_mugen18
11-28-2008, 07:05 PM
my :2cents: is for you too pick up one or the other , you would be surprised at how much info is in them

the vafc manual and the Chilton manual?

Scotsman
11-28-2008, 07:08 PM
chiltons or haynes

Barefoot
11-29-2008, 01:19 PM
call scotty or somebody an let them tune it for u. an stop playing and breaking things.