ThunderMax Deceleration Pop - Tuning Methods and Other Info - Manual (Page 2)

As the rpm declines below about 1796 Rpm, you will hear the engine begin to softly fire and
may even “feel a slight bump forward” as the engine, once again is delivering power or
Running.
Thunder Max also has this same feature, however it is greatly enhanced. The difference
between the Thunder Max and the OEM module, in this one regard, is that the Thunder Max
additionally gives the flexibility to activate or de-activate the feature and to "set" the Rpm
levels which the Decel Cut feature engages.
Decel Cut is a Band-Aid. It is NOT a perfect solution if some other conditions are not correct
“before” it is activated. Specifically, transition fuels (IE:just as the throttle is re-opened) need to
be accurate or additional “pops” will be created.
The activation of the Decel Cut feature can also be problematic in causing “shift pops”.
Even when running STOCK exhausts, there is Decel Pop but you just don’t hear it as well.
Tuning the Deceleration conditions
To “tune” the engine (map) for deceleration conditions, a specific area of riding needs to be
performed.
NOTE: Decel Cut Feature MUST be OFF during this development.
Beginning at 2500 rpm as the “top” rpm, a series of decelerations should be performed.
In a higher gear (3rd/4th) so that the deceleration is SLOWED (rpms drop slowly), the rider
should accelerate to 2500 rpm.
Now, close the throttle totally and let the engine reduce Rpms to 1500 Rpm.
Repeat this process several (5 or more) times.
The next step is to accelerate to 2500 rpms, but this time, “feather” the throttle to be “just
open” from the closed position.
The object is to let the tuning system “see and adjust” the deceleration condition “just off
closed throttle”.
Again repeat this process several times.