[porken]

All eBay chips are copies of the only set of chips which AutoThority made for '85-'86 in 1991. All of them still have AT copyright text in them.

The ignition chip has some advance added at mid-throttle which makes it feel perkier. (In some places it's 10° over stock, which is too much. That's why they ping.) The fuel chip has a crudely done fuel dump at mid-throttle which is too rich, but is an improvement over stock.

Both the AT ignition and fuel WideOpenThrottle maps are untouched from stock, so as soon as you are >75% throttle, you are back to stock. The stock WOT ignition map is conservative, and the fuel WOT map is way too lean at low rpm for max torque, at high rpm, it is way too rich for maximum HP.

My chips have custom programming, and revised maps for real power. For maximum effect, there is a version which uses a fuel pressure regulator from a '87 S4 (55 psi versus stock 36 psi). But wait, there's more! Not only is there more power, overall the car runs much more smoothly with revised idle control, and compensation for high engine temps.

With the stock/ebay/AT chipset, the car runs great cold, then gets duller and duller as the engine warms. With PorKen chips, it runs well cold, and gets more and more powerful as the engine warms.


Friends don't let friends drive with stale chips!