Fuel Controllers/octane/mileage:
Do i need a fuelcontroller/electronic jet pack?
No. There is a MAP sensor that will compensate for any changes and the bikes are tuned horribly rich from the factory. There is no combo of filter and pipes that could cause the motor to run lean enough to hurt it.
However, there are TWO very good tuners that you may WANT to unlock the full potential, the DynoJet Power Commander 5 (PCV)and the Dynatek Fusion. They are both the same unit and made by DJ in the same building.
I put XX pipes on and now im getting backfiring
Firstly, its NOT back firing (which comes through the intake), its popping from the air injection system (pair valve) on most Jap bikes. This is normal, you just cant hear it with the quieter stock pipes. You can either tune it out with the PCV or do a block off plate/delete. The reason you get this popping is from the Air Injection Valve (AIV), but also from the rich stock map, which is made worse if you use any fuel controller OTHER than a PCV/Fusion because they only ADD fuel, they cannot take it out, nor can they compensate for rpm based tuning.
What gas should i run?
Well the manual says the minimum is 86 octane unleaded. YOU GET NO BENEFIT FROM RUNNING A HIGHER OCTANE REGARDLESS OF WHAT YOUR BUTT-O-METER SAYS!! This is a proven fact. However, if you run a map with an aggressive timing curve like the one i made, you do need to run 93 minimum to keep from damaging your motor. See here for those who like proof and pretty pictures. For the folks who ride upside down (land down under), your 98 is close to our 93 when it comes to what fuel to run when using a PCV/Fusion and my map.
How much mileage can i get from a tank?
Anywhere from 40-56mpg depending on if youre stock, with a PCV or how you ride. See the Map Page for more info. When the fuel light comes on, you have 1 gallon left. This is in the manual, you DO have one, right?
Do i need to worry about elevation?
Copied from another site during research:
"The PCV does not care about what the ECU is doing, when a map is installed it simply adds the fuel it was programmed in to what the ECU does."
Example: If we determined the fuel mixture was 10% too lean at sea level and let the PCV add the 10% fuel to fix it then at 10,000 ft the ECU and those two sensors will cut fuel because of altitude and the PCV would still be giving the 10% because even at that altitude the ECU would still be 10% too lean even after adjustment. If it is too lean at sea level it would be too lean at 10,000 ft too.
The ECU has a barometric sensor that it uses to compensate for altitude, the PCV/Fusion simply adds or subtracts to what the ECU thinks the fuel mixture should be, so regardless of the MAP you run, you should be ok.
