Quote:
Originally Posted by estorilbluef36
I have a 2018 440i GC and have had a jb4 on my car for about 4000 miles now. so far, knock on wood, no issues at all. everything running smooth and good. the car pushes. FBO with jb4 (EWG and FF wires), MPE, ER catless dp, bms intake. would love to give u HP numbers but never dyno the car.
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If it helps, i made best of 410/426 on map 5 with just a bms intake, cg 5" catted dp, MPE which probably doesn't add hp, and 3 gallons of e85 mixed with a full tank of 91.