MicroSquirt.com read only forum (Jan.15,2018)

Yeah, getting the thing started in the morning wasn't fun, and I realized while it's been starting easier it's been running progressively worse. I'd had that part of the table very lean, do you think I should re-configure it? I'd also been having issues with very "jumpy" O2 voltage readings, as ...

are you running low z or high z injectors ? i see your msq is configured for hig-z injectors. if you have low z injectors that would explain the smoke from the ms unit.

so whats the resistance of a single injector ? how many you run ? how are they wired (i.e. all share one common power and ground ...

Well, here's what I've been working with. I have a basicly stock TBI 4.3L V6 from a 1989 Astro van. MS-II controlling the ignition, V3.0 board, IAC control etc. etc. Here's where stuff gets hairy. I had an overly large fuse in there, because I'd been blowing it every so often and I hadn't gotten any ...

Yes, I was sort of wondering about that. I mean, a stock Syclone comes with 30# injectors I believe, as do Buick GNs. 6X30# injectors is about 180#, which is more then the 170# from the TBI injectors. I'm just not sure that with the way the TBI system works if I'd bog the engine down horridly or not.

I've got a chance to pick up a 454 TBI unit with 85# injectors, I'm wanting to use this with a basicly stock 4.3L V6. (no cat, no EGR, MS-II unit) I was wondering if I could get these injectors to idle decently, perhaps even going as far as using a vacuum regulator, which will apparently drop FP by ...