Is there a true plug-n-play setup for a 5.7 with FI yet?

72BBSwinger said

I wonder if I would be ahead just going Fast XFI since I know I couldnt leave the motor stock and would at least cam it and grind on the heads some. Seems a custom tune even emailed is a few hundred plus it might take a few swings to get it right and if you're not happy you are at the tuners mercy. I have nobody even remotely close with a dyno and the experience on Gen III's.

Click to expand...

Standalone EFI solutions are not without their own issues.

First and foremost the FAST XFI system is nearly double the price of using a factory computer.

Second, tuning with a laptop is not that easy, though the software gets better with each iteration and the latest version of FAST software combined with a wideband O2 sensor allows for a great degree of self tuning. (I have no first hand knowledge of just how good the self tuning is, so take any "self tuning" claims with a grain of salt.)

Not trying to disaude you from going the FAST route, merely trying to lay out the costs and benefits of the decision. I decided to go the Megasuirt route, which has many of the benefits of the FAST system at about 1/2 to 1/3 the cost.

Regards,

Joe Dokes