AFM adjustments....

[clutterbucker]

So during the process of swapping the electronic out of the M30 afm, I realized that all the screws on the M20 afm are stripped...time to drill them out, but that will take time to find a drill.

So there I was, bored, and wishing I had a better, more high-flowing AFM. I take the cover off of the M20 afm (after breaking a few tiny little wires off the curciut board by accident and throwing the CEL) and thought "hey, why not dick around with the tightness of the AFM door now that it's all messed up anyway. I loosened it up at first a LOT, and whenever I tried to accelerate, the engine came near death. then I tightened it up so that it was almost closed all the time...only a small gap. Previously, the door was really tight and always closed when the car was off, now it has a .5cm gap all the time. Mid range power (seemingly) has skyrocketed, while leaving the top-end unchanged.

Is this 1.bad for my car? 2.the placebo effect?

EDIT sidenote: How logn can a car go for without screwing up other parts on bad rear subframe bushings?

[clutterbucker]

does anyone even have an opinion?

at least about the bushings?

[nando]

it sounds like you fucked up your AFM to me. what do you want us to do, throw you a party? ;)

[fabianyee]

a few of us here have adjusted the pre-load spring tension and the engine reponse is better. having little pre-load tension will not work. so adjust the tension one click at a time until you find a smooth idling point.

[clutterbucker]

thing is....it's pretty miuch always smooth...I was just wondering if it's a bad thing to have the door really loose? how tight are yours....tough to push or almost effortless?


thanks nando, I really could use a party right now, I'm fed up with my E30 and it's f'ed up bushings and valves and lines and plugs and bearings and blah blah blah. you guys set the date and I'll act suprised.

[ryan_george]

I tried loosening mine up a while ago, and I just remember not being able to get any low end. I could barely get the car moving w/o stalling it.

[hotghias]

makes sense to me that, if you have it really loose it will run rich. if you have it really tight it will run lean. there's my opinion. will it be bad for your car? probably.