What are UltiMap EPROMS?

These chips now have separate fuel maps for each cylinder, vastly improving mid-range smoothness and response, while still delivering the best available top-end from a given engine/exhaust combination.

We supply a chip puller and instructions with every chip, all in a specially designed crush-proof package which will mail-order safely.

Why are UltiMap Eproms necessary?

Manufacturer's goals aren't the same as the buyer's goals. Their EPROMs are compromised to meet stringent noise and emissions standards, have good fuel economy, and accomodate variations in engine tune and exhaust systems safely. In other words, they are DE-TUNED ! Most owners are interested in two things: Power and Acceleration. These are not really primary goals of the manufacturer, and their EPROMs are made accordingly.

Also, the factories do not allow for mixture variations between the two cylinders of their engines, which means that one is always richer than the other. Typically in the mid-range this produces very rough running.

Take a look at the Exhaust Lambda chart below: you can see the mixture for each cylinder as the throttle is opened, at a midrange RPM of 7000. The rear cylinder exhaust lambda is dangerously lean, while the front cylinder is way too rich. This is a factory chip in a standard factory bike.

How are UltiMap EPROMs different?

This ideal is dependant on both RPM and throttle position, because the mixture must vary to produce the best result; either cruise, pickup, or top-end power.

Our chips produce vastly superior mid-range throttle response and smoothness, and allow the engine to produce maximum top-end power as well - this is a complicated process which few companies are capable of. We also raise the rev-limiter by 500 - 800 RPM to give you more room to move. Take a look at the typical power benefit on the dyno chart below !

Customer Satisfaction

"Duane, I ordered a 061p chip from event technology here in the US per
your recommendation for high altitude...

I installed the chip and I can't believe how much of a difference it
made.  I love it!  The off idle response is incredible and so is the
midrange power.  I let a fellow 916 rider try my bike and I didn't tell
him about your chip to see if he could tell the difference.  He could
tell immediately that something was different, he also couldn't believe
a chip could make that much difference.


I am totally satisfied with your chip...
Thanks,
Chris Brown
New Mexico
USA"

"Dear Duane, You're a bloody genius! The chip you sold me is the 
absolute goods. I now have a smooth running 748SP with no apparent 
holes in the power curve and less vibrations throughout the rev range. 
For some reason the Termi's make a little less noise but it's a small 
price to pay. I can't wait to get the cams dialled in to see how much 
of an improvement your chip really does make.

Victor Riggs
Roebourne, Western Australia "

Can my dealer adjust them to suit my bike?

UltiMap Selection Guide & Order Codes

Version UM15

How to order your eprom