My experience: <img src=icon_smile_sad.gif border=0 align=middle> I picked up a Jet Performance Module from Jet Performance Products (
www.jetchip.com) at Automotive Engineering in Clearwater Florida, a reputable local speed shop. Unlike the ASE performance chip which requires sending in your e-prom assembly for reprogramming, the Jet Chip is an external module that runs in series to your factory chip. What attracted me to this unit was that you could turn it on and off, when the engine is not running of course; Otherwise you will blow an error code and unless you know how to clear it, you will have to take it to your dealer to clear it. (You wont want to do this). While mentioning taking your PT into the dealer, I should mention that on the last page of the installation manul it states If a problem occurs that may require you to take your vehicle to a dealership for service, first remove the Jet Performance Chip and reinstall vehicle back to stock.. This is not as easy is it may sound. I had installed quick disconnects and it was obvious that I had messed with the system which of course leaves you suspect as causing whatever problem you took it in for service for. Anyways, I had it installed and wanted to know for sure what the increase would be. Prior to installing it I was told that I could not expect more than a 12 -15 HP increase. I figured 150 HP stock plus 15 HP for 165 HP was worth pursuing. To check it out I contacted Tune Tech of Tarpon Spring, Florida. (727-939-8467) which has an in ground NHRA calibrated dynometer, The owner, Steve, tells me that he has de-bunked many a false performance enhancing claim for several local car clubs. Not that all are fake and worthless, just that some exaggerate the results you can expect. Some of the claims have been outrageous. We made seven runs total. First to establish a baseline without the Jet Chip, and then with it. The experience was disappointing from start to finish. After establishing the base run, and then installing the Jet Chip and turning it on it took four more runs to get a consistent reading. Erratic shifts to extreme lean fuel to extreme rich occurred three times. Finally back to back successful (?) Runs. Steve runs a cautious operation and I had agreed that we would red line at 6,000 RPM. Optimum HP tops out at 5,000 RPM in whatever gear you are in. Anything over that and you are wasting gas and adding useless stress to your engine. Bottom line: I gained a whopping 1.4 documented HP !! My advice is buyer beware! According to Steve, Jet does make some good chips, but the external module for the PT is probably not one of them. The pictures below: are as follows:
Setup at Tune Tech
2coolpt on the dyno
Revving it up
Readout
Results
