blow off valve...

[Axianator]

Your right in that you don't NEED an Apexi if you have the tweecer R/T or the SC-Tuner. As you point out, your far better off making the adjustments within the EEC directly than to make the adjustment from the outside through a "workaround".

I had been using my Apexi SC-Tuner for A/F tuning before I had access to the SC-Tuner and now the Tweecer and and liked the ability to make quick adjustments to the WOT fuel settings on the fly. No pc, no boot up, no re-starting the car, etc. You just tap a few buttons to add fuel at any RPM range you want - on the fly.

My intent is to perform the base A/F tune with the Tweecer and have the Apexi by default not making any a/f adjustments for normal day to day driving. But, should the SHO need a bit of extra fuel richness because of knocking (say a hot day or a bad load of fuel), I can easily add a bit or richness for WOT with the Apexi with the push of a few buttons at the desired RPM ranges. Its mostly convenience that I'm after.

Very good points, Mr. Pat - I will not argue with you there. One thing that might contraindicate the need for your Apexi, though, is the TwEECer's option of loading and using up to four different calibrations. As an example, you could have your "normal everyday" program in say slot #1, then have, say, a "5% richer" calibration for slot #2, "10% rich than stock" for slot #3, and so on... or, you could just get rid of it altogther, which is what I'd recommend.