throw me ideas. what can make a car go rich for a sec when tb shuts? (decel)
 

sup.

so i have this problam for a while now.

my afr's go rich for a second when i let off the throttle at idle and in moving decel... the more i tap it in the richer it gets.

please throw me ideas of what can cause this... its driving me insane.

setup:
p28 ecu + crome (ill upload the bin if anyone wishes)
dsm 450's
oem resistor box
tps set to 0.45 closed and 4.47 open
new plugs.


thanks,

Re: throw me ideas. what can make a car go rich for a sec when tb shuts? (decel)
 

my car did the same my cells at high vacume were to rich turn them down now its fine

Re: throw me ideas. what can make a car go rich for a sec when tb shuts? (decel)
 

Correct, thats probably his issue if its mostly at idle. This is one reason you can make subies and other MAF turbo cars to shoot flames when shifting. Don't correct for the BOV, and when you shift, it goes super-rich while the BOV is open.

Re: throw me ideas. what can make a car go rich for a sec when tb shuts? (decel)
 

i tryed that too.
all my 114mbar columns are on 1,

i also tryed a different map sensor and it did the same.,