What's the deal with OBD1 vs. OBD2 TBs? How's everyone's throttle cable fitment?

[butters]

I'm running an OBD1 TB and E34 throttle cable, and with it as loose as it needs to be for an appropriate idle the actual aluminum 90-bend at the TB is basically against the (E32/iX) brake booster. This is cocking the cable at maybe 15-20 degrees relative to its vector from attachment to actual throttle lever... if that makes sense. Is something wrong here? OBD2 TB have better fitment? I also have a funny idle condition where it will be too high at times (900ish) but returns to normal if I pull back on the pedal, as if it's sticking on the last 2-5%. The cable is new. Thoughts?

[Mr.SWISS]

post the part number of your cable you have, both of these are e34 cables, but one is for a 24v and other is not.

35411160609-95 525i
35411157847-89 525i

[butters]

I don't know which one I have (came with the motor I bought) but if I had to guess I'd say it's the late model. How are they different, can I identify without the PN?

[cmybimmer]

Bump, I have a similar problem. Cable is on its longest setting and the throttle butterfly is around 99% closed, but doesn't quite close all the way.

[7pilot]

I use an E34 cable with an OBD1 TB.
I shaved some of the meat from the rubber anchor grommet so that the threaded plastic sleeve of the cable has more penetration and allows for a little slack when the butterfly valve is at idle rest position.

You could also try bending the anchor bracket on the TB a little further away from the fire wall. I did not do this , as shaving the grommet was satisfactory for my use.

m

[butters]

to the above point, I shaved some meat from the threaded portion of the cable adjuster, that way the adjuster itself can physically be threaded further on and give a bit of extra slack.