I have a '92 Z28 w/ a L98 350. Bone stock, except for AFPR, 1.6 Roller tip Rockers, and MSD coil. The car has 208,000 miles on it and still runs really strong. I know with this many miles on the car one or 2 or more of the factory injectors are probably clogged or dying.I'm going to get a set of 24lb. SVO injectors and need to know if I need to get a custom PROM burned or not.

 

Yes, you would. That would be far too much fuel for a stock motor with the stock injector constant programming.

A better choice might be to send your existing ones to www.cruzinperformance.com and have them clean, test, & flow-match them.