Has anyone ever tried this kit? Was thinking about trying this for the rides to the mountains to keep my bike from falling on its face!

http://www.thunderproducts.com/dial_a_jet.htm

 

Don't mess with it, they don't work as good as advertised. I used them in conjunction with EGT gauges on sleds and they were very inconsistent how the fueled. Defiantly NOT a substitute for changing brass.

 

No jetting will compensate for the reduction of air pressure as altitude increases. A rough estimate is a loss of 10% of power for each 3,000 foot increase in elevation.

Ride on
Brewster

 

Thats what I figured, just wanted a confermation. Thanks guys.

 

What a shame, I've used a Dial-A-Jet as have a number of members at the Yahoo KLX650 group. I've used one in the KLX and compensated for an opened up air box, big bore Vulcan piston, full reverse cone megaphone exhausts, elevation changes of 5000 feet, and temperature changes from 18 to 100 degrees F. I used them in my old Nighthawk S as did a customer, to take out the flat spot in the mid range. It compensated for an aftermarket exhaust. A friend uses one in his XT225 and found it does the job.

The fact is neither the manufacturer nor I have ever heard anyone who's actually used one to say it doesn't work, until now. I wonder if Rim Bender bothered to contact Thunder Products to work with them on his issues just quit. Fact too is that it essentially works on the same principles as the Mikuni Power Jet. The vacuum effect of a lean mixture will draw gas/air mix through the Dial-A-Jet into the throat of the carb, richening the mixture only when needed. It's simple.

The snow mobile and ATV riders have taken to the Dial-A-Jet, where motorcyclists haven't. It's likely because those two groups are much newer and open to new products, where the motorcyclists have been steeped in the thought that you have to jet with hard jets. If you go to Dial-A-Jet's page you will find positive articles from both Motorcyclis, Dirt Bike, Motocross Action, along with numerous articles from ATV and Snow mobile publications. The reviews and a number of others' experience seem to contradict the one negative comment here.

It's well worth looking into them... unless you really enjoy taking carbs off and on to change out brass that ain't cheap either.

 

Just posting my experiences, sorry if it cost anyone a sale.

 

Ah ha! Sounds like I may have a new product to try depending on the price! My last trip to the mountains I was very displeased with my performance with the elevation change. Thanks thanks for the post klx678.

 

I hope you read some of the comments by people pertaining to that. Granted the thin air will reduce performance, but the thin air also makes the mix get richer. If you jet lean as Thunder Products tells you to do, you will be relying on the DAJ to adjust the fuel supply. On the KLX it was relatively lean to start, so I never bothered changing to richer jetting, I just got the DAJ since I already knew what it did. Most riders were shimming needles and putting in larger jets, usually with mixed results. I spent an afternoon in 1997 putting in the DAJ and have done nothing since, not even changed the dial setting when I put in the bigger piston or put on the pipe. There was enough variation on what the DAJ could provide in gas mix to work.

I even got one for a guy to ship to him in Singapore along with a cam chain tensioner I make.

 

The thing is really, did you call Thunder Products? I've dealt with them as did a friend. I think the guy's name was Phil, but regardless, he wanted to maximize our satisfaction. It might have been possible for you to get good results. I doubt it will cost a sale if a person actually contacts them. If there are issues he wants to resolve them.

Having been in sales I realize not everything works great the first time, but given the chance, many can become vast improvements and exceed expectations.