Cold idle Surging after Turner/Conforti Chip install - 325e

[cirrusblue]

Hello R3Vers,

Any advice on this?

I put in a turner motorsports chip last night and the car started right up, but surges a little at idle and that's new... it didn't do that with the stock chip. Car ran fine... it's pretty tuned up too, so not a lot of old crap on it.

Any ideas about why I'd have idle surging, esp. cold engine idle surging - after switching a chip?

Just to be a typical e30 guy, I ordered a new 02 sensor and a motronic relay and I suspect they are both pretty old and it can't hurt. But, I'm predictably wierd about the engine tuning stuff so wondering if anyone has thoughts.

CB

[jlevie]

I don't have a good explanation as to why this happened after you installed the chip. Does the problem go away if you put the stock chip back in?

[estoguy]

I was having a surging issue with my car before I did my last valve clearance check. A couple were out of spec. Once I had the car bolted back together, it went away and hasn't come back.

Might be worth checking into.

[cirrusblue]

I took a really close look with a new shop light and found some small cracks in my main air hose that connects the intake boot - to the ICV valve. The cracks are on both ends. I know that cant' help and the more i think of it, the car surges a little bit like there is a little too lean a mixture under heavy acceleration so I ordered a bunch of new rubber from Pelican and we'll get that slapped in there and it may improve. I got a new 02 sensor too so, that can't hurt... plus a new motronic relay just cuz I was already $100 in on new bits. Will see what happens thanks for the thoughts!