[hughett]

Followup Note: As you know, I bought the RacerX chip, disconnected the battery, and installed it in my '94 968, grounded, careful install, etc. Then when I started the engine it sputtered for several seconds, a couple of small backfires, and then it smoked like a banshee for nearly a minute. Then the smoke cleared out...and smoked less and less for the first 10 miles. I've driven it about 300 miles now. For a while there was some brownish smoke on startup in the mornings but no smoke once warm.

Today, I had a thorough leak-down test done and all's tight as a drum....3-5% deviation. Also, no smoke on startup now. And the car seems to run stronger with the chip.

I have a stock chip and a proven Weltmeister chip that I was going to substitute in and compare with the RacerX but it's running great right now and no smoke so I'm leaving it as is. 26.5mpg.

What happened? I don't think it was coincidental. I think that the Motronic must have gotten sideways somehow with the new chip and it took a minute to adjust itself. Probably confused the injectors or something. Don't know why it took 300 miles to clear it all out though. I'm crossing my fingers that it will keep running fine. Sure ran well today. When it hits about 4400 rpm it really comes alive.

Harvey