NEED HELP FAST!
04-25-2004, 11:34 PM
#21
1.5 BAR
Thread Starter
Join Date: Oct 2003
Posts: 1,107
Re:NEED HELP FAST!
yeah thats what i'm saying, its gotta be something so stupid that i can't find it.. it will NOT happen in boost.. i held the rpms at 3000 rpms so i wasn't in boost... NO CEL... hit boost... NO CEL.... stopped... started to go and rpms drop and CEL comes on for MAP Sensor #3.
04-25-2004, 11:37 PM
#22
1.5 BAR
Thread Starter
Join Date: Oct 2003
Posts: 1,107
Re:NEED HELP FAST!
ok i just remembered this...
stock 88-91 si injectors are 240cc and i'm using 450cc injectors so..
240/450 = .533 so then 1 - .533 = .466 which comes to the 450cc injectors are 46.6% larger so on the V-AFC by doing 48% at idle i'm not giving it enough fuel.. correct?
stock 88-91 si injectors are 240cc and i'm using 450cc injectors so..
240/450 = .533 so then 1 - .533 = .466 which comes to the 450cc injectors are 46.6% larger so on the V-AFC by doing 48% at idle i'm not giving it enough fuel.. correct?
04-25-2004, 11:44 PM
#23
3.0 BAR
Join Date: Mar 2003
Posts: 21,479
Re:NEED HELP FAST!
Actually, the 450cc injectors are 87.5% larger than 240cc injectors. The 240cc injectors are 46.6% smaller than 450cc injectors. :P Did I confuse you yet? 
Sometimes when you are using such large injectors you need to take away more fuel at idle to make it idle right. Also, I don't think the % is completely accurate anyways. It doesn't take the signal from the ECU to the injectors. It takes the signal from the MAP and blah blah blah....don't know if you know this....
You shouldn't throw a MAP code when you're not even in boost so my guess is the wiring.
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
Sometimes when you are using such large injectors you need to take away more fuel at idle to make it idle right. Also, I don't think the % is completely accurate anyways. It doesn't take the signal from the ECU to the injectors. It takes the signal from the MAP and blah blah blah....don't know if you know this....
You shouldn't throw a MAP code when you're not even in boost so my guess is the wiring.
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
04-26-2004, 12:12 AM
#25
3.0 BAR
Join Date: Mar 2003
Posts: 21,479
Re:NEED HELP FAST!
Originally Posted by draztik
wiring for what? the V-AFC? i swear there is no connection to the MAP sensor from the V-AFC.. maybe i'm wrong but on the site i see no MAP sensor connection.
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
04-26-2004, 12:16 AM
#26
3.0 BAR
Join Date: Nov 2004
Posts: 5,101
Re:NEED HELP FAST!
Originally Posted by Dr.Boost
Originally Posted by draztik
wiring for what? the V-AFC? i swear there is no connection to the MAP sensor from the V-AFC.. maybe i'm wrong but on the site i see no MAP sensor connection.
i put the o2 sensor on the hf manifold... was that not right? this is a question towards my idle going from 400 - 1000.
04-27-2004, 01:38 AM
#30
3.0 BAR
Join Date: Jan 2004
Posts: 5,708
Re:NEED HELP FAST!
so your vafc isnt hooked up to the map wire? if not u need to hook it up. in order to use the vafc hack to trick the map sensor. you have to have it hooked up. or it will never work. cause how are u supposed to map hack if u dont have the map hooked up
