I should have called it ECU and not CPU in the title. Figured I'd throw that in there before someone corrects me...
So I began tearing apart my '87 Turbo today and ran across a curious part. They guy I bought the car from had already done a lot of mods and when I took the CPU out the top of it was raised. I imagine this is one of the old school upgraded CPU's but I'm not sure. I did notice that even with 550 injectors I could set the SAFC to all 0's (no adding or subtracting of fuel) and my AFR's were normal (14.7-14.9 cruising). Were there any companies that upgraded our CPU's or would this have to have been a custom job by the previous owner?
So I began tearing apart my '87 Turbo today and ran across a curious part. They guy I bought the car from had already done a lot of mods and when I took the CPU out the top of it was raised. I imagine this is one of the old school upgraded CPU's but I'm not sure. I did notice that even with 550 injectors I could set the SAFC to all 0's (no adding or subtracting of fuel) and my AFR's were normal (14.7-14.9 cruising). Were there any companies that upgraded our CPU's or would this have to have been a custom job by the previous owner?


