Offshoreonly.com - 502HO 435HP ECU Upgrade

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kjberman

01-19-2015 04:23 PM

502HO 435HP ECU Upgrade

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

Powerquest230

01-19-2015 04:41 PM

What is the claimed improvement?

kjberman

01-20-2015 08:55 AM

50hp........ish

pvan1

01-20-2015 10:35 AM

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

onesickpantera

01-20-2015 10:37 AM

Quote:

Originally Posted by kjberman (Post 4252758)

50hp........ish

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

BUP	01-20-2015 04:08 PM

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

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