I am getting a tune and on there web site it says this. "Programming for supercharged applications, if you have access to wideband o2 readings and your own cable." What exactly do i need to accomplish this and what should i buy that would work the best? I also need to know if since i have an fmu if i should remove it when i make the runs to get the data? Would it be dangerous if i removed the fmu and made WOT runs? I also thought about getting a tune and then doing the wideband thing and having it retuned to get it closer to the right fuel calculations. The email tune is $75 and updates are $25 so if it counts for an update the price is pretty cheap.

I purchased a dynojet wideband O2 unit (Approx $450 from Acceleronics.com). It has a USB/ or serial connector for data log, and, an analog gage for viewing while driving. I could not have tuned my vehicle without it (although I tried). Since I always make adjustments to the flash, I would recommend LT1 edit or similar software to do your own changes. I have made flash changes 3 to 4 times in a daily road test,so, PCM send/receive service can be inconvenience and expensive. (97ss 383 D1 M6) B.