Carbs / Intake
Jet kits are OK but pretty lame in the big picture. With the Dynojet kit, run the stock jets, and set the fuel mixture screws to about 4 turns, but otherwise follow the Dynojet instructions.
We just cut back customers' air box lids a little bit higher and results in a more rigid frame.
The individual 41 FCRs on the short Malossi manifolds absolutely kick butt in conjunction with extreme headwork and the Staintune spaghetti system! Insane torque and unlimited top end. With all the work I did to the heads, you'd think that mid-range torque would suffer, but NO! The thing pulls way hard. It just grabs your butt and flings you forward. Look at the rebuild and engine parts pages for some pics.
While the Malossi short intakes and single FCRs (pic) are powerful, I don't think their gains warrant installing them on a street bike. You must have extreme head work and the spaghetti system to take advantage of the extra flow. I totally recommend the dual FCRs for 98% of the people out there. Keep in mind that the difference between the single FCRs and short intakes and the dual kit is not that big of a step. Other than increased throttle pull, you may not even be able to differentiate between the two while riding.
Head work is pretty impressive: simple cleanup combined with FCRs and the spaghetti system, the 2V motor's horsepower peak moves up to near 8500 rpm and has a useful overrev up to 10,000 rpm. If you pay someone $2000~3000 to change the angle in the ports, you'll be able to break into the 90s. I've seen claims of 97 and more hp from a carbureted 900 2V motor.