CSHQ update, and MAP EFI question

Walter Sherwin wsherwin at idirect.com
Wed Jun 16 00:20:57 GMT 1999


>EFI QUESTION:
>Either Carl or another person mentioned the ability
>to turn off a MAP system's fuel calcs at idle, and
>have it ignore MAP input,  below a set RPM, injecting
>fuel based on the RPM number at closed throttle, I'm
>dealing with an slightly over-cammed big block
>chebbie that doesn't idle well at all.  It has a 7730
>ECM (that could be changed) and a 900 CFM Holley TBI
>that has 4 big low pressure injectors on it.
>Thanks for any clues.
>Mike V. (always clueless)




What BCC software are you running in your 730, and how are you electrically
driving the 4 Holley injectors?  Rough cam specs?  Fuel pressure?  If cam is
not *too* large, you may find other things are interacting and producing a
poor idle.

Walt.




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