Originally Posted by
Newjack
I never had the dip for the first 5 years of ownership. In the last year I've noticed it badly in 2nd gear and it hurts my soul lurching forward and then back into my seat with my foot to the floor whenever I push through 4k rpms. Never had the issue before and all of a sudden here it is.
I have rebuilt my DISA valve with the GAS kit years ago. I have a vacuum leak somewhere, need to find it and solve that (no light but rpms dip down when idle and bounce back up slightly). I also have a shark injector I need to install. The shark claims it fixes the 4k dip, but from the other posts in this thread it doesn't seem to work for everyone.
unplug your DISA. You will know right away if that fixes it for you. Trust me, I tried hard to notice any difference (except for the dip going away) and I cannot so I just left it unplugged.
2005 BMW 330i ZHP 6MT. Built 11-19-04. Bought 4-2012.
Stock: Nav, leather, PDC, Xenon
Added by me: OEM Alarm, OEM heated seats, OEM aux kit, OEM Bluetooth, intravee, M3 strut brace, BMW Performance Intake, Nappa leather arm rest, updated LCM (triple blink, euro hazards, trifecta lighting, 3 stage brakes), temp gauge