slip on vs full?

jgorton123 · #11 (**permalink**) 07-31-2010, 10:51 AM

i can see from these posts i'm not gonna be happy with a slip on.........i'm cancelling my MW slip on.............looking back into the rossier. i saw a youtube vid of the rossier with the quiet kit and the thing still sounded awesome!!!

rossier says it works great with a filter and wire mod......we'll see!!!

ZX11 · #12 (**permalink**) 07-31-2010, 01:09 PM

Quote: Originally Posted by hcomras

hmmm well my FULL SYSTEM will stomp on any slip on...so...based on that logic....? the head pipe has a huge effect on power. and about "tuning" header pipe....fmf mega/powerbomb? spaced at a specific length from the head for increased power.. im just saying...seems to work fine on a single cylinder...

I am not saying there is no power gain. Just that it is very very small for the money. 1hp maybe,.. but the manufacturer claims 3hp. A factory team wants that 1hp,... and the sponsor $$ from selling full systems.

The powerbomb sounds like the ATV version of the Tornado fuel saver hoax. I could be wrong though. I will look for dyno charts showing the same motor with the chambers vs without the chambers. I notice that Motoworks and Ron Woods skip the powerbomb chambers.

You often hear that the best way to get full power from a full exhaust is to have engine work done also. Like marketing a plastic sticker that adds power just so long as you also have the engine compression raised, more aggressive cams, a piggyback fuel controller installed, and the valves reworked.

There must be something to the full system but I missed the dyno chart that had a "stomp" level. Normally this means there is no dyno chart or it was disappointing. There are stories of every combination of ATV stock and modified beating some other built ATV noted on these forums. Random races don't prove much when you are talking about 1 hp gains. Is there something specific the aftermarket steel tube is doing that the factory steel tube isn't that is giving you those huge "stomp" horsepower increases?

I think, maybe wrongly, that if there is a secret bend to the head pipe that will raise hp, the factories would use it also. The hp war among sport ATV's would't let them skip the better headpipe design.

hcomras · #13 (**permalink**) 07-31-2010, 01:29 PM

from reading this ill just assume you didnt see my dyno chart with just the full exhaust, programmer and filter. before my cam, 48hp to the ground...ill try and attach it...its comparing a ron woods full exhaust, dynojet PC3, filter to the can-am racer package that i previously ran (ecu, motoworks slip on, filter, lid off, motoworks fmi, etc)

obviously a full system has its advantages...maybe more some than others....i can only speak from experience here i have no mechanical expertise just experience...but i guess "stomp on" mightve been harsh...8hp gained feels like a great gain, and thats over a slip on system that is clearly the most popular choice out there....now compare those to stock numbers...thats a real "stomping" lol

heres the write up atv action did
http://www.rotax.net/PDF%20files/ATVaction%20ds450.pdf

back to the original topic, yes there are advantages to a full vs slip on. whatever brand you choose to go with, it almost always will be better than the slip on (except fmf, they loose peak hp with their header) i ran stock, then baffle out and pink wire, then motoworks and pink wire, then the fmi, then a custom bcs/velocity style intake ring, then UPGRADED to a full system, power programmer, custom map, filter, and LOVED it...then exhaust cam...

you gotta think about the future a little. are you planning on modding the motor at all? if so, just get the full. like dirtdevilz1 said, its really not that much more, youll save $ now by buying it all together, and then your next mod can be internal and get bigger numbers outta that motor...

lovetodune · #14 (**permalink**) 07-31-2010, 05:39 PM

Quote: Originally Posted by hcomras

from reading this ill just assume you didnt see my dyno chart with just the full exhaust, programmer and filter. before my cam, 48hp to the ground...ill try and attach it...its comparing a ron woods full exhaust, dynojet PC3, filter to the can-am racer package that i previously ran (ecu, motoworks slip on, filter, lid off, motoworks fmi, etc)

obviously a full system has its advantages...maybe more some than others....i can only speak from experience here i have no mechanical expertise just experience...but i guess "stomp on" mightve been harsh...8hp gained feels like a great gain, and thats over a slip on system that is clearly the most popular choice out there....now compare those to stock numbers...thats a real "stomping" lol

heres the write up atv action did
http://www.rotax.net/PDF%20files/ATVaction%20ds450.pdf

back to the original topic, yes there are advantages to a full vs slip on. whatever brand you choose to go with, it almost always will be better than the slip on (except fmf, they loose peak hp with their header) i ran stock, then baffle out and pink wire, then motoworks and pink wire, then the fmi, then a custom bcs/velocity style intake ring, then UPGRADED to a full system, power programmer, custom map, filter, and LOVED it...then exhaust cam...

you gotta think about the future a little. are you planning on modding the motor at all? if so, just get the full. like dirtdevilz1 said, its really not that much more, youll save $ now by buying it all together, and then your next mod can be internal and get bigger numbers outta that motor...

well said

DiRtDevilz1 · #15 (**permalink**) 07-31-2010, 06:42 PM

Quote: Originally Posted by jgorton123

i can see from these posts i'm not gonna be happy with a slip on.........i'm cancelling my MW slip on.............looking back into the rossier. i saw a youtube vid of the rossier with the quiet kit and the thing still sounded awesome!!!

rossier says it works great with a filter and wire mod......we'll see!!!

Hey was that my race quad?? Did it have #69 Lange graphics?

zumbo · #16 (**permalink**) 08-19-2010, 10:38 PM

So from what I have gathered on this thread, the can-am racer package isnt worth the money, better spent on a woods or rossier exhaust, filter and pc3.....and for more power a cam. which cam? i am trying to research possible options..... i come from the ltr world so excuse my ignorance

DiRtDevilz1 · #17 (**permalink**) 08-20-2010, 06:49 PM

Well the racer package is free. And it has several good parts. U can sell the pipe like I did.

dsrules · #18 (**permalink**) 08-20-2010, 07:48 PM

I would look very close at the woods set up, if you are looking for a very nice hp gain and if hp is important to you, dollar for dollar hard to beat! and also the head pipe is much larger than the stock pipe. I am very well pleased with mine, raced another ds in dunes hill shoot, he had a slip on-pink wire-and intake. my quad would be about 3 quads faster than his, I had same mods but a ron wood full exhust and I am much larger than other rider. thought it was my good riding skill so we switched quads and he was about 4 to 5 quads faster. its hard to gain power so dont be afraid to spend a little more and be happy! in near future consider programmer with pipe or order package form rw save a little $$$ that way. good luck and have some fun!

hcomras · #19 (**permalink**) 08-20-2010, 07:54 PM

the exhaust cam mod is worth it. around $80 and your local shop can do it if u dont feel comfortable. woods for the win!

zumbo · #20 (**permalink**) 08-21-2010, 02:37 AM

Quote: Originally Posted by hcomras

the exhaust cam mod is worth it. around $80 and your local shop can do it if u dont feel comfortable. woods for the win!

Whats the exhaust cam mod? i tried searching it anf after a full page of guys saying which exhaust is better i gave up. Im assuming its like the yfz cam mod a few yrs ago that u retard or advance the exh cam???