So I have a em1 with a boosted bseries build by myself. Eagle h beam rods, wiesco 8.9:1 compression pistons, 1000cc bosh injectors, walboro 450 fuel pump, tuned on e85. Runs super rich at idle and wants to die out if you aren’t romping the gas. It idles pretty rough. A/f are around 10/11 when idling but seem to normal when WOT. Only issues I have are it running rich at idle and wanting to die on me. Any ideas??

 

Take it back to your tuner he obviously diddnt finish tuning it.

 

Take off the turbo and put the stock injectors back in and put a stock ecu back in. That will fix all of your problems

 

Nope... it won't. It will still be rich because it is a low compression engine now... not a 10:1 stock B16A2.