XSeries-forum

Hi

I cleaned the inlet manifold the other day and noticed the rubber/plastic covering the swirl flaps was becoming worn in some of the ports.

What's MOT situation with doing a Swirl Flap removal and blanking?

No problem at all. No way of testing for them being there or not.

As long as you code them out so no engine warning light is triggered. Worth keeping an eye on the DPF soot load as sometimes there’s a tad more smoke in start up. Doesn’t always happen.

How do you code them out?

I have ISTA and the bluetooth bimmerlink & bimmercode, if that helps?

You need to tell me about soot load, I drive 600 miles a week so don't think this would affect me?

Don't I need to blank the EGR as well to do this? MOT?

Sm[]key wrote: ↑Sun Apr 17, 2022 11:52 pm You need to tell me about soot load, I drive 600 miles a week so don't think this would affect me?

Probably not a problem then. Blanking the EGR off won’t cause an issue either. The only emissions tested for on a diesel are for smoke. Without the EGR there may be more that gets to the DPF so it needs to regen more often. It’s just a case of making sure the regents are happening and the ash level (what’s left after a regen) isn’t rising too fast. A DPF is supposed to last at least 90,000 miles before needing anything doing to it, and then they often just need a proper clean rather than replacement.

Coding out means you need a software tool to change settings in the underlying system for controlling the engine etc. You have ISTA but I’ve never gone looking at it to find where the settings are. Someone else on here may know though. You might need INPA - part of the same toolset as ISTA.