ktm Posted March 5, 2007 Share Posted March 5, 2007 I see that some EMS are able to run fuel only as a piggyback to the stock ECU which is used for ignition. One such product is Microtech's LT4 system: http://www.microtechefi.com/microtech-products.php?product_id=2 Has anyone used such a system (not necessarily Microtech's) in conjunction with their stock ECU? Quote Link to comment Share on other sites More sharing options...
Administrators RTz Posted March 5, 2007 Administrators Share Posted March 5, 2007 Years ago, I used a 2D system, when 3D was less popular. These day's I don't see the point. Its kind of like inventing a black & white Plasma screen TV... nice, but ultimately 'not it'. Don't discount the value in proper ignition control, particularly on a modified engine. If you use the factory curve, you WILL sacrafice power. Power, response, and reliability are just as influenced by proper timing, as proper AFR. Its a small step in effort, but potentially a huge leap in performance. Quote Link to comment Share on other sites More sharing options...
Tony D Posted March 6, 2007 Share Posted March 6, 2007 MS can run in that mode as well on a Z... Don't know why you would, but you could... Quote Link to comment Share on other sites More sharing options...
Gavin Posted March 7, 2007 Share Posted March 7, 2007 Don't know why you would, but you could... Because its so easy to do with the mechanical ignition, and you still get to ditch the AFM. I had mine like that for some time. I have also set that up on my Silvertop 20v 4AGE powered Corolla and a Gen. 1 Miata simply by adding seperate temp sensors and cutting off the factory injector wires, with no problems (note those are all Bosch L-Jetronic ECU'd cars). But on those two it was only temporary, spark IS where its at. Why wouldn't you use MS? Or a better question, why would you go out of your way seeking fuel only? Quote Link to comment Share on other sites More sharing options...
ktm Posted March 7, 2007 Author Share Posted March 7, 2007 I was simply exploring options. Gavin, it's interesting you simply cut the factory injection wires as that is what I was contemplating in this setup. I have decided to jump in with both feet and go with both fuel and spark. Quote Link to comment Share on other sites More sharing options...
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