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disconnect my afc

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boosted86

15+ Year Contributor
414
5
Sep 7, 2005
Weston, Florida
I recently accedentily reset my afc, and after i did so my motor ran like shi*! now i have a 20g and upgraded injectors. my qyuestion is can i disconnect my afc to make the motor run better until i can take it to get tuned. and if i can disconnect it where would i do it from?i was told that when the afc gets reset it gets zeroed out so basically its like its not even ther,if this is so, then how come right after it got reset it ran so horribl.? please help. this is my only car, and i depend on it to get around, thanks
 
If it is reset, try to go through the settings again. Most important ones are "KARMAN" and "4 Cylinder". I wouldn't disconnect the afc because your car might not start at all. It depends on how long you have the afc. When I took mine off, my car wouldn't start.
 
boosted86 said:
I recently accedentily reset my afc, and after i did so my motor ran like shi*! now i have a 20g and upgraded injectors. my qyuestion is can i disconnect my afc to make the motor run better until i can take it to get tuned. and if i can disconnect it where would i do it from?i was told that when the afc gets reset it gets zeroed out so basically its like its not even ther,if this is so, then how come right after it got reset it ran so horribl.? please help. this is my only car, and i depend on it to get around, thanks

What size injectors do you have? As said above, set to 4 cyl and karman. Set the lo/hi to 20/80 and -10 across the board. That should get you running with 550's and maybe even 650's. If it's still running super bad, try setting to 2cyl. Then get a logger on there!
 
with the safc zeroed out its basically not doing anything, so disconnecting it will do nothing.

if you have larger injectors, your car is running like crap cause the ecu has no way of adjusting for the added flow. which is where the safc comes in.

you need to lean it out to compensate for larger injectors, because if your are zeroed out on bigger injectors, you are running so super rich its not running right. adjust the safc to Karmen, 4cyl. on a safc1, low is 0 and high is 70 i believe, if safcII, low is 30 and high is 80. adjust your low fuel sliders to -10 and see how it runs.

btw what size injectors do you have. if i remember, RRE and Prostreet have general safc settings for certain setups, might want to check those out.
 
If you do decide to take it out you will have to climb under your dash and reconnect the 2 halfs of the airflow signal wire. Since to install a AFC SAFC what not you need to cut this wire in half and soldered a wire from the SAFC to each side. The other wires are just spliced into a exisiting wiring. RREs site and the VFAQ tell you how to get a basic tune but you should log it while doing it. A freind may let you borrow a pocketlogger. I lend mine out all the time.
 
If you have no afc you may want to thow the stock injectors in there untill you get it working again. hope this helps and happy modding :thumb:
 
I'm not very good with the hole AFC tunning thing, so i was wondering if anybody could kinda give me a step-by step on how to tune the hi/lo. and another thing what the hell karman? and another thing if i run extremely rich what kinda of damage can that cause?just out of curiosity
 
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