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- Sun Jan 16, 2011 1:53 pm
- Forum: General Motors
- Topic: speedo wont work with my custom chip
- Replies: 0
- Views: 4086
speedo wont work with my custom chip
ok so originally my car was a 3.1 v6, went through 2 305's and now i have a 350. its a 350 TPI with speed density, has a 7730 ecm, i burned a stock AUJP chip and the prom im using is from a TPI 305 but the chip is for a 350. my speedo doesnt work and i get code 51 which means "PROM failure"...