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Re: I only wish I had the knowledge to work with t (archive)

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Posted by andy r. on February 10, 2000 at 17:48:18:

In Reply to: Re: I only wish I had the knowledge to work with t posted by Jon Caldito on February 10, 2000 at 16:54:16:

: I agree with Greg. Some people might just buy the program and tinker with it not knowing what the hell is going on and later have melted pistons and burned valves.

A fully-programmable system gives you a lot more power to f*ck up that it gives you power to improve things. And the gains to be had aren't going to overwhelm you either. It seems to me that the Jim C. program is close enough to ideal that's it's not worth worrying about anything else.

Now that's for a car running pump gas. If you are going to run high-octane race gas, high compression, or ridiculous boost, then yes you *could* benefit from reprogramming the DME yourself. You also get that much more chance of messing up, permanently. If that's *really* what you want, then you might seek out an email list called "DIY-EFI" (do it yourself fuel injection). These guys remove the factory injectors and meters and hook them up to dummy loads to keep the computer happy running the AC and theft system. Then they install their own piggy-back, fully-programmable fuel and spark system. Lots of companies make these - SDS, Haltek, etc - and they are anything but cheap. Also, it's a good chance that the quality of engine management will be worse at anything but full-race conditions (fewer fuel maps, fewer cells per map, less self-learning, etc). Probably won't idle for shit, but it'll be adaptable just in case you have five turbo systems and want to try them all.

For the cost of all this you can probably get ten Jim C. updates. Is it worth it to you? If it was, you definitely wouldn't be asking about it *here*, so I'm gonna guess no.



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