Quote:
Originally Posted by C|3R1C
So my E93 M3 currently throws up an engine malfunction after about 1 minute of driving. This engine malfunction is the 4k RPM limit and practically 0 power.
I used a BT cable and got the codes:
27E4
Underpressure pump Mastervac plausibility
Error will cause a warning light
Error is currently present
2789 and 278A, which are catalytic converter conversion bank 1 and bank 2, respectively, but I think those are just for the increased emissions.
Also got the codes for the engine malfunction too.
I am wondering what exactly is this.
List of mods I have: AA Tune, AA Power Pulley, AA HFC, and AA Catback.
Thank you in advance for all the help  |
My bet is your Vacuum line with pressure sensor under the brake reservoir went bad. Are you hearing a constant buzz from the front left of the car? if so thats my guess.