Yes after I switched to code59 and a 749 ecm it has ran consistently across outside temps hot to freezing. I'm wondering if the fuel pump I am using is over running stock fuel pressure regulator making fuel pressure a tad to high. I used a stock fuel pump from a 94 Buick roadmaster station wagon with a 5.7 lt1. If not my fpr is not working right. Identifix info says 43-50 fuel psi is the spec but that's an awful wide range it seemed to me but mine is 48-50 and jumps to53-55. I have an adjustable reg sittin here but gotta find time to thread fuel rail to install. I'm having much better luck with this ecm and code59. I can watch for spark knock now, got timing table goin in the right direction. 8B I got 1 knock signal and it would retard the timing in every cell, so much so that I could barely drive it before I found it was doing that. I'm still workin out some bugs like PW is bouncing off of .57-.63 with afr at 13.1-14.2 at idle so gonna try playing more with injector offset vs bat volt or lowering FP. Gonna do a lil reading on PW and that offset table on the 59 forum before I do either. But it does run much better and consistent as one can with the tune it's running on. With 8B I blew the doors off a BMW Z4 for the first 2 gears, stuck my head to the seat. But it was cold outside and the next morning it was warmer and ran like crap!! Now I hit a sweet spot in the tune and it's there no matter the outside temp. But yes it's running much better!!! :-)
I'm not 100% sure but but what I found on the web is it's a m62. I had a 1999 c230 sport, that's where I got SC, intercooler and recirculating valve, it had a valve to switch to NA intake tubing and a blow thru TB. I should have kept the damn valve!!!!! I knew I would need the thing. My original plan was to blow thru TB but forgot about brakes so that's y I ask. I can weld SS, aluminum whatever but I can't drive SC on the intake side of engine without some kind of remote drive. I also have a series 2 or 3 SC from a early 2000's Buick. And a turbo, turbo numbers say it's from a 340hp flat 6 cyl Cessna airplane, haven't learned how to read turbo map yet. The Buick may be long enough to drive from intake side. I'm pretty sure I can make it a blow thru and still have vacuum but making my throttle plate a taco shell scares me, then it'd be open throttle panic!!!!! I looked at vacuum pump for brakes so I'm concidering everything at this point
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