I have a 02 heat with 496 HO. I order a raylar and will be having Arron At absolute marine in Havasu installing it asap. I will post results as soon as its done.

Yes Please keep us posted on the results.........Make sure you GPS the Boat on Havasu before the Install?????

My Plans are to install the Raylar in mine next winter after the warranty has run out

I second the GPS results before and after. Only "exact" results please
We all assume here that you are currently around 65-66 on GPS. My guess is 71-73 after the install. 15-20 hp per = 1mph / 100hp = 5-7 mph.
It currenlty takes an HP575SCi to run 76 consistant, HP500 to run 70 fairly consistant.
Should be interesting. Of course now if this was the HotBoat forum you should see 15-20 mph increase

Keep us posted,
Dave

I have a GPS speedo getting installed this weekend, and will run on Mead and havasu prior to the raylar being installed. I hope to be taking the boat down to Arron next week, as the parts should be in . Hopefully I will have a good tailwind to so I can get the hotboat results! LOL

Sounds great Mhale00!!
We're hoping to get down to Mead here real soon. I'm really wanting to run my 496HOs down there where they can breath
Has the lake come up at all? Southern Utah has about a 225% snow pack which will miss Powell for the most part but has to go straight to Mead I would think.
Dave

Mhaleoo, beautiful boat .........
The TRUTH SHALL SET YOU FREE !
GPS is known around here as "tough love."
Regards,
Steve

BobL:
Wow, I just ran your speed and horsepower #s, and even though the speed range was different, the horsepower requirements were almost identical, so I think we're on to something here..........................
Your #s: 375HP = 61MPH; 625HP = 75MPH, for a 14MPH increase. 625HP - 375HP = 250HP -: 14MPH = 17.8HP per MPH
My #s: 550(propshaft)HP = 76MPH; 700HP = 85MPH, for a 9MPH increase. 700HP - 550HP = 150HP -: 9MPH = 16.7HP per MPH
Actually, my HP #s are an educated estimate, based stock horsepower and modifications, since I've never dynoed my motor. If I correlate my #s against yours (1 MPH increase requires 17.8HP), I'm actually making 735 bobtail/710 propshaft HP. Anyway, there are lot's of variables (load, weather, etc), but I think we are very close to determining that it takes approximately 17HP to increase the speed of a 28' Heat 1 MPH.
It will be interesting to test these #s against your next round of mods............OK, now I'm going math crazy 75 + 15 = 90;
15MPH x 17HP = 255HP + 625HP = 880HP ..................
Keep us posted!
Regards,
Steve

I'd have to say those are pretty accurate calculations from my experience Steve.
But what would I know about a Heat; I own a Flame

OK, now that you've moved on you just want to look down on the "little people" ........................................
The peer pressure on OSO is INTOLERABLE ...........
Regards,
Steve

Hell I won't be looking down at ya...I'll just be looking at your transoms as you blast by