is it possible that the corsa muffler tips could cause a hp decrease on a slightly modified 1998 502efi ?( exhaust , ecu reprog. adj. fuel reg , air cleaner , msd ignit ) . do plan to upgrade heads and cam later .

I use Corsa Tips on my 509 Blower Motor and I did not lose a single mile an hour from before. Just make sure they are the large diameter tips. They work so well that I can actually have a converstion with the person in the front passenger seat.

Tony how you been . I hope to have the boat on the river in the next two weeks. Looking foward to getting together. So are you keeping the boat or looking to up grade like everyone else????

I doubt there would be enough speed differnce to be able to notice on other than big HP engines (OK - what's big - I mean really big - I have a stock 502 MAG and I would say it is really not big HP).

I have debated changing my silenced Corsa tips to a straight thru tips and for now have decided to stay with the silenced tips. The sound is a deep rumble but not so loud as to be offesive. Well maybe. I have listened to loud rock, riden loud motorcycles, and shot loud guns for most of my life - huh - what did you say?