The tips alone are not going to make it a requirement to reflash the ecm.. The stock systems are a little fat anyway.. He should still be fine in just adding the tips, unless he is also doing something else that is not being mentioned here.. Jamie

The tips are the only "mod" to the engine for right now. Perhaps after I get comfortable with the boat, & have a need for more speed....if ya know what I mean... ....I really appreciate all the input on this matter.

A friendly Fyi.. The corsa tips are about 50$ more for the pair, but they do have a lifetime warranty on the internal flappers.. Jamie

Replacing exhaust tips is not a worthy performance upgrade. If you think you will go faster or gain RPM you are waisting your time. I did this on my 454 mag when I had my smaller boat and did not notice any difference. They do sound a lot meaner though! I got mine from Jim Browning at Corsa perf. Same thing- no internal baffles with external flappers. They do make the boat louder. Less restrictive? Maybe. Performance gains were not noticeable. They are not that much $ so go for it they sound cool.

I did pretty much figure little to no gain in performance, but the Corsa's are stained & really show their age, so replacement was necessary ...I was just really suprised to see the fixed baffle in them, & it just looked to be quite restrictive....oh yeah, & the sound was a bit "muffled"....LOL...Fortunately, I boat in areas where there are no laws concerning the "noise"...."YET", & there really are not a lot of performance boats in this area (lots of fishing here) So, I should be good for at least the next few boating seasons....