[airkewldfan]

I know this is an old thread but I want to add to it. I can confirm the Carparts.com injectors are garbage for our stock 911’s. These are the ones with the green rings on them. The previous owner of my 87 had a so called shop install a set of these before I bought the car. Yes they run but it was pig rich and no amount of adjustment on the idle would make idle without a high, lumpy and sometimes surging idle. I spent months chasing the ICV, vacuum leaks, adjustments, and everything else under the sun.

I found a used set of original Bosch 158’s and sent them to RC injector to have them rebuilt. Installed them last night and it’s unbelievable how much better it runs. Finally purrs like it should.

I guess maybe the silver lining is I learned a lot about the Motronic injection system in the troubleshooting process.

Thanks!
Mark