I have a 1990 fire bird 3.1 automatic. It has a new alternator, radiator, starter, and switch so far is great. It has about 140 horse power I'd like to make it a bit faster and update it some more, for now the only problem I've had is the water pump. The body needs a little work because of the previous owner and it only has about 167,000 miles. the best car I've had so far. RagingRevolver@aol.com.
I own a 1990 formula with a 5.0 TBI. I have added a 3" flowmaster exhaust, MSD coil, injector spacer (not TBI spacer),platinum plus 4 plugs, accel cap and rotor, and a jet performance chip. The car is wonderful to drive with all this done to it. I also get about 27 miles per gallon one the highway!
About the passing the built in Security (for the key). Afaik the only way to bypass it is to have a new chip produced by e.g. Ed Wright or other fine chipmakers and ask him to put down the security bit. Then it doesn't engage the Wheatstone bridge (?) check for the little black resistors on the key.
Br. Thomas Witting, FINLAND.
Regarding the chip on the key, first off it's not a chip, it's a simple resistor, and the computer is programed to work only when proper resistance is applied. As for bypassing, not totally sure; you can try to remove the VATS fuse in the fuse panel, and get an ignition from a non VATS equipped Firebird or Trans Am.