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Fuel table adjustment varies on specific models. Different models repond differently to changes made on specific tables. For this reason different models of motorcycle will use the tables differently. Tables 1, 2 & 3 are fuel tables. Table 4 is the ignition table.

Harley Davidson EVO and Twin Cam

Table 1 AAP (barometric pressure sensor)
This table should not be used to add fuel. If it is used to add fuel the engine light may come on at sea level, because the sensor does not have adequate range. If the bike is ridden well above sea level this table could be used. If the "FI" light does come on it will not cause damage to the bike and it will still run normally.

Table 2 TP (throttle position sensor)
This table is used to make the majority of fuel changes on these bikes. When adding fuel here we are basically signaling the ECM that the throttle is open further than it actually is at any given point. This causes the ECM to supply more fuel. This table can be used to add fuel from 0% throttle to 80% throttle. It is not possible to add fuel at wide-open throttle with this table; we are not able to tell the ECM that the throttle is open more than 100%. You can remove fuel from the 100% column (as well as 2% through 80%) with this table. The fuel change with this
table is not linear. Adding a "2" at small throttle openings will have a different affect than adding the same number too a larger throttle openings.

Table 3 AT (intake air temperature)
This table can be used to add or subtract fuel from the entire range. It is a finer adjustment than Table 2 and does not have a large adjustment range. We normally use this table to add fuel to wide-open throttle (100%) and to remove fuel from closed throttle (0%) to reduce deceleration popping. Values in increments of "5" or more are necessary to affect the fuel curve noticeably.

Table 4 Ignition
Adjustment for ignition timing is + or - 11 degrees. The value entered is in addition to, or subtracted from the stock timing at that point.
Negative values are used to reduce detonation that is common to these bikes. Timing can be adjusted from idle to redline at all throttle positions.

Honda RC51 (VTR1000SP)

Table 1 AAP (barometric pressure sensor)
This table can be used to add or remove fuel from 5% through 100% throttle. The maximum value for adding fuel is "9". The maximum value for removing fuel is "-35". Due to limitations of the sensor it is not possible to add more fuel than a value of "9 Even with a full exhaust installed most of the RC51's fuel curve needs to be "leaned out". This is not a problem using this table.

Table 2 TP (throttle position)
This table can be used to add fuel at throttle settings between 2% and 80% if Table 1 does not allow the desired fuel ratio. Unless the motor has been heavily modified it should not be necessary to use this table.

Table 3 MP (manifold pressure/vacuum)
Not normally used on this bike.

Table 4 Ignition
Adjustment for ignition timing is +/- 11 degrees. Timing is adjustable from 2,000 rpm to redline at all throttle positions. On street bikes with normal fuel, advancing the timing does little to improve power. It is possible on some models to achieve small gains as long as the highest octane fuel available is used.

Honda VFR800

Table 1 AAP (barometric pressure sensor)
This table can be used to add or remove fuel from 10% through 100% throttle. The maximum value for adding fuel is "9". The maximum value for removing fuel is "-35".

Table 2 TP (throttle position)
This table can be used to add fuel at throttle settings between 5% and 80% if Table 1 does not allow the desired fuel ratio. Small changes in this table equal large changes in fuel delivery.

Table 3 MP (manifold pressure/vacuum)
This table is used to adjust fuel delivery at small throttle openings, 0% through 5%. Large values are required to make a noticeable change in fuel delivery (steps of "5" or so). Maximum value is "125", but if a value over "35" is used it might be necessary to use Table 2 in this area.

Table 4 Ignition
Adjustment for ignition timing is +4/-11 degrees. Timing is adjustable from 2,000 rpm to redline at all throttle positions. On street bikes with normal fuel, advancing the timing does little to improve power. It is possible on some models to achieve small gains as long as the highest octane fuel available is used.

Suzuki GSXR750 2000-2001

Table 1 AAP (barometric pressure sensor)
This table is used to make the majority of fuel changes to these bikes from 10% through 100% throttle. Unless the engine is very heavily modified there should be sufficient fuel adjustment using this table. It is possible to make the bike overly rich using this table. Maximum value for this table is +/- 35. This table has minimal affect on throttle positions lower than 10%, however, if you find that an adjustment in the lower throttle ranges has the affect you are looking for there is no trouble in using this table.

Table 2 TP (throttle position)
This table is used when either Table 1 or Table 3 cannot supply enough fuel for the given throttle position. It is rare to use this table. Small changes in value equal large changes in fuel delivery.

Table 3 MP (manifold pressure/vacuum)
This table is used to adjust fuel delivery at small throttle openings, 0% through 5%. Large values are required to make a noticeable change in fuel delivery (steps of "10" or so). Maximum value is "125", but if a value over "35" is used it may be necessary to use Table 2 in this area.

Table 4 Ignition
Adjustment for ignition timing is +/- 11 degrees. Timing is adjustable from 2,500 rpm to redline at all throttle positions. On street bikes with normal fuel, advancing the timing does little to improve power. It is possible on this model to achieve small gains as long as the highest octane fuel available is used.

Suzuki TL1000S, TL1000R, GSX1300R, and '98-'99 GSXR750

Table 3 MP (manifold pressure/vacuum)
This table is used to adjust fuel delivery at small throttle openings, 0% through 5%. Large values are required to make a noticeable change in fuel delivery (steps of "10" or so). Maximum value is "125", but if a value over "35" is used it may be necessary to use Table 2 in this area.

Table 4 Ignition
Adjustment for ignition timing is +/- 11 degrees. Timing is adjustable from 4000 rpm to redline at all throttle positions. On street bikes with normal fuel, advancing the timing does little to improve power. It is possible on this model to achieve small gains as long as the highest octane fuel available is used.