BEST STAND ALONE TUNER

It really depends how much knowledge you can find that will be easy for you to tune yourself. In other words for me the P.M.S was easiest because it simplified things better than the rest. However the twEECer, Quarterhorse seem to be the more popular choices due to price. Plus you can do more (sometimes that's good or bad depending if you know what you're doing) The P.M.S. can be expensive, luckily I found one for like $325 used on the Corral and snatched it up (it was local too). I'd read into those choices and decide which on you think you can handle.

I had the old style P.M.S. controller. Pics doing 80MPH down the highway,


As you can see RPM at 80MPH is 2390, PR-is the Program I using, you can have up to 3 tunes, O2-Running rich (fine with that, better than lean) and total timing is 47 degrees.



Here is the twEECer hooked to a FOX body. The datalogging feature is fantastic. You can dial in TPS, check injectors, MAF, Fuel, O2's, etc from one screen. We had an issue with the TPS sensor while datalogging, it showed like 3.9v at idle and wouldn't move, car would barely stay running. Loosened the screws to adjust it, when I moved it the sensor didn't feel right. I took it off and both ears inside the TPS were sheared off. Bought a new TPS and adjusted it to .98v and the idle was rock solid at 750rpm. Would have chased this problem for who knows how long, 2 minutes of datalogging found it.