Hey guys,
Whenever I come to a stop my car will idle fine, but then after a few seconds it will drop and the car stalls.
Sometimes it won't stall and it kicks back up to normal again.
Previously my R34 was running fine, yesterday I bought a cannon muffler and got it installed, and it didn't have the problem beforehand.
I took it to my mechanic and he reset the ECU but I'm still having the same problem, he then increased the idle to 900 but still it drops and comes close to stalling (but hasn't stalled on me with the increased idle yet).
Has anyone had this problem before? Can you please help me diagnose the problem?
Any help/advice?