Race Map (Jay Marmont)
4/4 -1 +3 -2
1/2 +3 +4 -3
1/4 -2 -3 -2
4/4 +2 +2 +2
1/2 +2 +4 +2
1/4 +2 +4 +4
Very aggressive map. Also suits the DRD pipe also.
I've been racing MX for years, and was a Pro/Expert Supermoto racer for a while(before having kids). Now I just ride MX a few times a week. I went through all the maps that have been posted here(to include the 4 on Yamahas website) with full stock exhaust, then with stock header and FMF 4.1 RCT muffler, then full FMF system(Mega Bomb header and 4.1 RCT muffler), to see what made the best power curve and ridability. I also changed the rear sprocket from the stock 48 tooth to a 49 and 50 to test each set-up(pretty much spent a whole day swapping combinations). When I changed the stock muffler to the FMF muffler, the stock power curve was broadened and didn't fall as flat on top. The muffler also added some decent power all through the RPM range. The swap from the stock header to the FMF Mega Bomb header only seemed to give a very slight improvement on the bottom. I even tried the differnet set-ups with the stock air filter and the DT-1 'Over the cage' filter.
I Found the Marmont map to be good with stock exhaust or the "FULL" FMF system. The stock header w/ FMF muffler seemed to loose slight bottom end power, which made the 'Snappy' map better. Going up 1 or 2 teeth on the rear sprocket also helped with the 2nd to 3rd gear gap. I currently use the Full FMF system, the Marmont map, and DT-1 Filter... BUT... I did find the 50 tooth to be best for me. 49 was good but I weigh a little bit more than i used to, so I liked the extra pull from corners. The 'slow' or 'less hit' settings worked well when the track became really hard packed and slick(power didn't come on as strong). 'IMO', if you are going to invest in exhaust, just buying a quality slip-on mufller from FMF, Yoshimura, or Akropovic(though longer and more prone to crash damage), would be sufficient for most riders. THE TUNER IS A MUST THOUGH! Good luck, hope this may help some people.
Edited by dcrider942, March 06, 2012 - 07:56 AM.