SX/SXi/SXi Pro What pipe is this?

[509freerider]

Just wondering if any one knows much about this coffman pipe. I like it and it seems to get good power all around, but was wondering if I could do better without having a pipe with a waterbox. I was thinking of trying a factory dry sxr pipe or a power factor yami but not sure if it would fit.

 

[Big Kahuna]

That is the race pipe. Really Really Really Loud. Works best with a ported motor.

 

[jeepinxj]

I have the same pipe on a boat i just got. How does it sound?

 

[509freerider]

sounds great to me, but it is very loud. Seems to have good power, but I dont have another sxi piped to compare it. It smokes my buddies sxr thats modded

 

[jeepinxj]

What else is done to your boat? I just picked one up and it has a whole bunch of chit on it. It has a down cylinder but has a west coast head and 155 compression in the other cylinder.

 

[509freerider]

where to start! blowsion filter, 48 sbn carb, westcoast intake, v force reeds, 800 bottom end, sxi cylinders ported and bored 82mm, pro-x pistons, ada head w/26cc domes, 100 octane fuel, coffman exhaust, r&d timing advance, billet drive coupler (was stripping and breaking stock ones), billet fuel pickup, high flow remote fuel pump. Had some fuel starvation problems with the stock pump on the new motor. Still working on the impeller setup, and installin a tilt nozzle this weekend.

 

[upstand2]

If you spend $40 for a Flowcontrol valve and put it to the line with the waterbox or stinger it will make it pretty snappy. You could even do two if you wanted. That's alot of water dumping in there.
I wouldn't spend the money for another pipe until your buddy can beat you. I've rode a couple of Kawis with dry pipes and havn;t been too impressed.

 

[socal750]

im runnin the pjs pipe like that with the resignator on it,ive got a water line running into the resignator and the thing sounds awesome....not to loud but sounds good

 

[Big Kahuna]

I have the same pipe on a boat i just got. How does it sound?

Lets put it this way. It will vibrate your adams apple.

 

[d-ski]

The Coffman "Rocket Mod". A great all around pipe. Should work real good with your combo. On the sx motors, these work as well as the FPP dry pipe. As for jetting, not too sure with that single monster. Start on the bottom and work to the top. Don't waste your $$$ on a dry. Good luck bro!