I have problems with my 335i. I am 20 yo and from germany, so sorry for my bad english.
My 335i has jb4 g4 (last fw), vrsf dp, k&n air filter and bbs ch-r rims.
The jb4 g4 has the sld and no dp-fix.
After shifting in high rpm my engine has Misfirerings cylinder 5 and 3. First time only in cylinder 5 and a few days later also in cylinder 3. Sometimes the engine goes into failsave mode. The codes are only Misfirerings cylinder 5 and 3 and the lambdas because of the vrsf dp's.
My bmw service wants to change the high pressure pump.
The Misfireringsonly happen in map 1,2 and 5. Map 0 is without issues. Is it possible zhat the jb4 is broken? :S
I downt want to spend thousands of euroes for nothing
Can anyone help me with my 335i e93 from march 2007?
I am very sad because of the issues
PLEASE HELP ME!