Diablosport Forums

I have a 1993 ford 5.8 in a boat and am wondering if diablo makes a tuner for this application? It seems to be a stadard 5.8 with multiport injection and it has a obd2 plug. Any help would be great. would really like to make some power out of this thing.

No. They don't support anything nearly that old.

Any idea how to add power to these older efi engines?

Just the standard hot rodding stuff. Heads, cam, intake manifold, headers, etc. Somebody has to still make a chip for them, just not sure who. Maybe Hypertech. They were popular back in the mid 90's.