Hi,
Here is a stupid situation happening to my car (RB FBO 335i 6MT): after I do a long 4-th gear pull (up to 6200+RPM), on all the following pulls my timing is very low, mostly negative. No timing corrections are recorded, and no error codes. The ECU just decides on its own that it should drop the timing :(. Everything fixes itself either after I let the car sit for 1-2 hours, or even after a low-timing run it sometimes fixes itself on other runs but not sure in which conditions.
Anyone has any idea about this ? I asked Josh@Cobb and he things that the overboost after shift is causing the problem. But I have identical overboost on all the 3rd gear runs before the dreaded 4-th gear run and it doesn't happen.
In the picture you see a 3-4-5 run with good timing, followed by a 3-4 run with very low timing.
Anyone has any idea about this ? I'm starting to give up on it :(
![Click here to enlarge]()
Here is a stupid situation happening to my car (RB FBO 335i 6MT): after I do a long 4-th gear pull (up to 6200+RPM), on all the following pulls my timing is very low, mostly negative. No timing corrections are recorded, and no error codes. The ECU just decides on its own that it should drop the timing :(. Everything fixes itself either after I let the car sit for 1-2 hours, or even after a low-timing run it sometimes fixes itself on other runs but not sure in which conditions.
Anyone has any idea about this ? I asked Josh@Cobb and he things that the overboost after shift is causing the problem. But I have identical overboost on all the 3rd gear runs before the dreaded 4-th gear run and it doesn't happen.
In the picture you see a 3-4-5 run with good timing, followed by a 3-4 run with very low timing.
Anyone has any idea about this ? I'm starting to give up on it :(