Curious if anyone had any luck using the Whipple Industries Stage 2 ECU upgrade on the 502HO 435HP....

I have searched and found threads however no results.......

Any input is appreciated.................

Thank you

What is the claimed improvement?

50hp........ish

save your money as claims are overrated due to raising rev limiter does not increase hp or torque as max power is made at or below the factory rpm limit.
If a guy wanted to change factory cam and install bigger injectors then tweek fuel curves, timing and raise rpm a guy would then have something

I find it hard to believe that Merc left 50hp sitting on the table. 10-15hp maybe, but not 50.

How does the OP have 435 hp from a 502 HO unless an upgrade somewhere has been done ? Is it a typo for 415hp because the 2000 year model and back MPI 502 black engine propshaft was rated at 415 hp STOCK. If he is talking about the CATalyst 2010 and up 8.2 L that is 430 hp. Just asking