Too Old

Run a search and you'll find results from end users.......

......have been running them for several weeks with what I would consider fairly good results. I am running a Velocity 290, with a Bravo 1 labbed 28. Started at @ 4900 RPM, 72-73 on spedo. I am now at @5150, 76-77 on spedo, but running out of prop at times. Tried a Bravo 1 labbed 30, but it was a bit too much prop. Ran close to 4900 RPM, but speed was not there. That prop is being worked on now to hopefully allow me to run at 5050, and perhaps gain another MPH or so. Velocity hulls react very well to minimal power, so other hulls may not see the same results. If I maintain a consistent 4, I will be satisfied. I always run above half full on fuel, so that is not an issue.

.....Results are in on the 496 CMIs, 482hp with no other mods. Sounds good. See latest Powerboat Mag

Chris288

well if we all went by speedo #'s I wouldnt need these headers...

Rippem

The part about Velocity's bottom responding very well to power(among the best) is certianly true. Owned 2.

like I said earlier, single engine fast bottoms/lighter boats seem to be the ones getting the gains for the $$.

So you guys have it made at 1K per MPH.

Point me in the direction of documented results on 9-10 thousand pound twin boats.



57 HP? That's a new high quote.

Again Dyno...CMI buy a big ad in PB this month?

Just kidding!

Rippem

I'm not busting vendor's balls...

CMI's for pricing is more to the point, price 'em like (and make them in satin) satin elbow tops and they'll sell like hotcakes.

no one's guinnepigging them on heavy twins.

Give me a couple pair. After 200+ hours on my 353 I know where my boat stands in terms of performance. I'll report accurately and scientifically.

ECeptor

Then I'd just need another winter project to keep me busy! The power gain isn't the point...it's the time in my shop that really makes it a worth while endevor. Far cheaper than visiting a shrink!

Chris288

Somebody has the specs. on the DIY manifold porting, ask 26Sonic from the board, I think he knows who has the blue-print..

Cattitude

so conservatively call it 80-100 horse for twins- that's got to be good for something- compared to the more intrusive options of the Raylar kit (worthy) and the Whipple SC (also worthy) at a higher expense.

I'd like to see some documented twin results too- but the first ones I see may be my own. something is coming- just not sure how soon (Antbody want to buy a nice Pantera- CMI's included )

Rippem

8 grand will buy one helluva lot of anodized bezel and powder coated bling... easily making my boat 3 MPH faster at the dock.

right back at 'ya.

(just having fun now...)

Too Old

I can provide a few names and phone numbers to customers who would be willing to share the results of twin installations.

If you're seriously considering an upgrade of exhaust, give me a call and I'll send you in the right direction for real world numbers from the users mouths. .

Rippem

Thank You...and absolutely!