Quote:
Originally Posted by turboalero
there are afc's that will work on the olds that dont have to be hp tuners. as long as the map is between 1-5 volts
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The Apex'i Power FC is a standalone engine management.
The Apex'i S-AFC regardless of what version is a piggyback ECU that changes the cars sensor signal going to the car's PCM, thus allowing you to lean or richen your fuel mixture, and allowing you to accomodate a lil bit for larger injectors.
HPTuners is software that gives your stock factory PCM standalone-like qualities, such as being able to tweak and adjust a wide variety of parameters. It's only true limitation is the programming that GM has done.
The only things I would recommend for an n-body tuning, especially the 2.4L quad4 and the 2.2 ecotec would be HPTuners. HPTuners allows for those going boost on the 2.4L to upgrade to a 2bar mapsensor, thus allowing wider adjustability and less of a headache.
DHP Powertuner and HPTuners would be the best bet for the v6 crowd.
There are also other options for the 2.4L and 2.2L motor such as using the Hahn portfueler, coupled w/ the GM S/C reflash for the 2.4L and 2.2L motors. You can even add HPTuners and fine tune the motor up to 2bar, then let the Portfueler supplement up to however much boost you intend to run..
Beyond the above mentioned, HPT and DHP, would be going standalone, in which case you would have to find what's best suited to you, and for what kind of tuning and adjustabilty you need.
blah blah blah I'm rambling, but those are the best options that I see in my view and with how i think.
Oh, yeah you can also go megasquirt but that's a bit more involved in setting up, for the true DIY'er.