bucking deceleration??

[Logue]

when i'm in cuising get on it and let of the throttle usually on the interstate or somewhere. the engine bucks. i don't think is that motor mounts or anyhting like that. I talked to a tuner who said i need to lower the fuel becuease its getting to rich a mixture when i go into vacuum. how do i adjust this on the SAFCII anybody know.

thanks

 

[ahains]

when i'm in cuising get on it and let of the throttle usually on the interstate or somewhere. the engine bucks. i don't think is that motor mounts or anyhting like that. I talked to a tuner who said i need to lower the fuel becuease its getting to rich a mixture when i go into vacuum. how do i adjust this on the SAFCII anybody know.

thanks

Most often this is because you have routed your BOV to air for a cool psshh sound. It generally still works pretty well when you quickly take your foot off the throttle all of the way. But if you have some boost and take your foot only partway off the throttle, it bucks.

HTH,
Adrian

 

[Logue]

i was venting to the atmoshpere. but not anymore. i put it back less than a week ago. i know it definitley did it when i was venting. Now that its back on the car is better but it still does it. maybe the computer needs to relearn everything??? some more time might fix it.

 

[Mackzero]

Maybe try reseting your ecu. Then the ecu will recheck everything and adjust itself to the parameters it can.

 

[Logue]

i'll try that tell you what happens

 

[ahains]

Have you checked for boost leaks?