Got my '90 GT running last week. 306 with Speed Pro Pistons, B303 cam, stock (for now) rockers, Shorty Headers, 2000 Navigator GTP heads with a little bowl blending and port work on the exhaust side. '97 Explorer intake with work done on the lower intake ports, 24 lb injectors with an adjustable fuel pressure regulator set at 39 psi. A 70mm EGR spacer, throttle body and mass air body with the original sensor, a cold air filter and an electric radiator fan. Stock ignition. The rear has 373 gears, but I might go back to the stock 308 gears.
It pulls easily to 6 grand and feels like it would keep pulling. I have not yet taken it to the track so I have only gone through first second and third gears at full throttle. I have a stock PCM. Timing is at 14 degrees. How important is it to have a mass air sensor that is calibrated to the 24lb injectors? Which chip if any should I consider? I want a good streetable car that I can take to the track on occasion. I installed all the smog set up even though the GTP heads are not equipped for air injection, I need to pass the visual test for inspection purposes. The MIL came on and I jumpered the diag connector and retrieved DTC 34. Most likely because I did not hook up the Vacuum to the EGR controlls.
I have been told that a 93 Cobra MAF wont help unless I also replace the stock PCM with the Cobra PCM. I was also told to use a 94/95 MAF. Are they compatible with the 90 PCM? Any suggestions and feedback is appreciated. My experience is mostly with Carbureted cars so forgive me if I use improper MLAs (Multiple Letter Acronyms)
It pulls easily to 6 grand and feels like it would keep pulling. I have not yet taken it to the track so I have only gone through first second and third gears at full throttle. I have a stock PCM. Timing is at 14 degrees. How important is it to have a mass air sensor that is calibrated to the 24lb injectors? Which chip if any should I consider? I want a good streetable car that I can take to the track on occasion. I installed all the smog set up even though the GTP heads are not equipped for air injection, I need to pass the visual test for inspection purposes. The MIL came on and I jumpered the diag connector and retrieved DTC 34. Most likely because I did not hook up the Vacuum to the EGR controlls.
I have been told that a 93 Cobra MAF wont help unless I also replace the stock PCM with the Cobra PCM. I was also told to use a 94/95 MAF. Are they compatible with the 90 PCM? Any suggestions and feedback is appreciated. My experience is mostly with Carbureted cars so forgive me if I use improper MLAs (Multiple Letter Acronyms)
