I have several things for sale right now. I have a Bosch MAF sensor for my 89 IROC, it has never been used and is brand new. I also have PROM burning equipment. I have the pocket programmer, and data rase chip eraser. The reason I am selling this stuff and the reason I got the sensor and never used it is because I decided to go with the Holley commander 950 instead of messing with this MAF system & computer. Make me an offer on any or all of the stuff.