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They are the best. Ive had this GN since 1988. Ive tried every latest and greatest chip that came down the pike... But the chip I got from TurboTweek is the very BEST, Sweetest running in ALL modes of ANY Chip Ive ever seen or used. You turned my GN into the beast Ive always thought it could be...

I cant find a Fuel pump relay anywhere in town. A Zettler AZ986-1A-12DC1R1 is what came out of it. (under the rear of the car by the gas tank) Anyone know where I can find one or what might be a substitute?

I had a GN mechanic check out my powerAsser brake system. The electric motor under the cylinder is burned out. Is there any way this can be seperated and replaced; or should I just junk it and go to Vacuun system.

Im about to change out the Busted powermaster unit on my GN for something less expensive and more reliable. Ive read thru some forums, but just wondering, which would be the best for a daily driver Grand National; Vacumn or Hydro-Boost? Any Pro's & Cons for each? Thanks for any help or advice.

My GN has had non factory injectors installed by mechanic who knew nothing about Turbo Buicks. He said the injectors were one size larger than the stock GNX injectors. It of course runs very ragged. Does anyone have any suggestions on where or how I can get a chip that will work the larger...