I want to know how to modify the air intake, not the air filter change to KN but the intake itself. I have two 03 Rincons and neither will do a wheelie from a stop. I have read on this forum that alot of stock rincon will wheelie without any mod. just stock. Thanks for any advice.

 

There is nothing you can do to the airbox to make it wheelie from a stop if does not wheelie now. What you need is a Dyno-Jet kit. AND, a simple jet change will not fix it. the Dynojet kit comes with a different springs that actually makes most of the difference. My Rincon would sputter under a full throttle start before my Dyno Jet kit and K&N. A P650 would beat me by about 5 lenghts in 100 yards. Now, I can hang within 1/2 lenght of a modifed P650 for 100yards. It is well worth the $100 to add the filter and Dyno kit.

 

Yep what greg said if it will not wheelie now then an airbox mod is not going to make a difference plus you will need to rejet after the airbox mod anyway

 

Yes, the spring that comes in the kit is the main thing that gets rid of the bog. After I installed the K&N and DynoJet kit, I was running a little rich. Then, I did an intake modification. I did nothing to the airbox, I am just using a 2 1/4 hose (i may go bigger) and running it outside of the plastic so it's not sucking in hot air from the engine. It leaned out the mixture, and now it's near perfect.

 

Thanks for the advise. Where can you get the jet kit I can get the KN filter local? How do you keep water and other trash out of the 21/2 pipe when you run it to the outside of the plastic YELLOW 650? Both Rincons I have sputter when Igive full thottle that spring might be what I need to Greg

 

I did not buy into the whole Dyno Jet thing at first because I have had them on every other quad I have owned and they never made anoticable difference. On the Rincon, the difference is very noticable. I can wheelie with my boy sitting on the gas tank without even pulling up.

You can buy the kit most anywhere. I bought mine at Highlifter.com. They shipped it the same same and it was at my house the next morning.

Some people have tried clipping off part of the stock spring and say it makes a difference. Personally, on a $7K quad, I would rather pay the $100 and get it right the first time. The installation is simple and the results are measurable. It was money well spent. I believe you can buy the DynoJet kit without the K&N for around $60 or both ofr around $100. I bought both.

 

Check out Rocky Mountain for the K&N and the jet kit as for the hose that will be something you will find local.

 

I started out by shimming the stock needle and clipping the stock spring (basically in half, it's a $1 part, so no biggie). I could wheelie fairly easily with the right traction. (also installed a Uni filter).

Then for S&Gs I bout the DJ kit. I have never bought a jet kit (except for my crotch rocket, because it was from a specialist for the bike, not DJ). I noticed basically no difference with the DJ kit vs. the "free" mods you can do yourself.

So, I'm still on the DJ kits are a waste of money bandwagon. $50 for $15 worth of parts. Not worth it..

 

Rejetting no matter what way you go (kit or just getting jets from a dealer) is the most important part of setting up yor bike for where you ride (elevation and temperature) and in responce to modifications to the intake and/or exhaust.

For example, my bike at sea level with stock jetting and air box lid removed (for testing purposes only) will die when you get on the throttle. To fix this I would have to rejet to make it run properly, and to get the maximum performance gain for the extra air allowed into the engine.

 

Thanks bvstone and action 450 for the advise.