Hi Guys,
I've been throwing feelers out over the web in regards to getting some guidance in prepping for a July departure around the world. Most notably I am trying to plan out my jetting so that I can transition from sea level to projected elevations of 10,000 feet or more. Presently I'm tuned for max power at sea level with a cut open air-box (as demonstrated by the Keintech website), K&N Filter, DynoJet 170 Main jet and Needle, FMF pipe, and Jesse Extended Mixture screw turned out 2.5 times. Runs extraordinary and color-tuning demonstrates perfect mixture at idle. Obviously this will be way too rich at altitude though. So I'm definitely going</span> to go back to the stock air box (cover the hole with a pre-shaped CD case and silicone around the periphery to seal), but as far as jets go the stock 140 main jet had an awful surging quality that the DynoJet kit fixed. If I drop down from the 170 to the DynoJet 150 main, would that be too little fuel to compensate for the K&N and more notably the FMF slip-on? Otherwise that seems to be the closest to stock set-up which is reported as great for up to 13,000 ft., yet without the surging that the stock Mikuni 140 main jet and needle produced. I'm happy to lose the max power I have now for better MPG's and to avoid roadside jet changes. Your guidance and experience would be very appreciated. Thanks.
-Remy