the kit itself isn't very well equipped to handle fuel control, all you get is a high quality FMU and inline pump. The car will run rich (but somewhat safe), but will not be as driveable, or make as much power as with standalone management, like the Hondata system. I ran the kit without tuning with the kit's basic fuel provisions for about 1 year, no problems, it went 13.7s at 109mph on factory tires. I then added 440cc injectors, and removed the FMU, and used a VAFC to "tune" the car and ran 12.7s, but the car was virtually undriveable in the summer heat, it ran way too rich. Now with the Hondata, the car is stock in terms of driveability, and pulls very hard all the way to redline, we will see how it improves the 1/4 mile times in a couple of months. Hey come check out Honda-Acura.net, we hang out over there now quite a bit....