Originally Posted by DaveR

Hi guys,
A short update for any of you who may be following this thread. Well, I'm pleased to report that I installed the Nitro-X module last weekend, and it's working just fine and dandy.

I carried out a bit of lab-style testing before installation. Using a multimeter, I measured the resistance of the IAT (inlet air temp) sensor at several temperatures, cross-checked it against the sensor specifications in the Service Manual, then measured the resistance of the Nitro-X on various settings so that I could determine accurately what the "zero" setting was.

I was able to determine the actual values of the four on-board resistances and, with a little basic electrical theory for resistors in parallel, successfully proved and verified the other eleven settings available. (1/RT = 1/R1 + 1/R2 etc.)

Once the Nitro-X was installed, of course, you can just read off the temperature from the on-board diagnostics display (D05: Inlet Air Temp) which the ECU is being "fooled" into believing. All I need to do now is determine the best setting to use for my particular mods, which is the same as deciding what position to set the knob to on the Kev Mod. Unfortunately I don't have access to a gas-analyser, so it'll have to be seat-of-the-pants tests for me!

Would be pleased to share any or all of this data with anyone if you're interested, but I'll take it to one of the technical forums if you do - the Newbie's Lounge isn't the place for too much detailed info!

Cheers all!

Originally Posted by oldf4RT

Ais mod works very well. Did mine last week and stops almost all the popping. Block the pipe off at the airbox and re-fit as per Kevs mod' guide. much better - I don't mind an odd pop but it was too much before.


The CO number can be different for each bike and can be anywhere from -128 to +128. I know what mine was originally and have increased the value by 20. I intend to put it back before using the new O2 eliminator.

Made my own Kev mod with a 1k ohm resistor from Maplin. Total cost incl' housing box, knob and wiring was less than �5. Sometimes I think it works and some days not ? I believe you need to control the O2 sensor (not eliminate it) as this senses oxygen level and adjusts at low throttle openings whatever else you do so overrides everything else. I may not be exactly correct but I've thought i'd cured it a couple of times only for it to come back.

I also think that somedays being more confident (sub consciously ?) and opening the throttle earlier and slightly harder going into the middle of a corner might make a difference. Also and I know I've said it before but chain slack and loose cush drive rubbers makes more difference than you'd believe. Several other people have pointed this out to me in the couple of days since I joined the forum.

Good luck.

Originally Posted by oldf4RT

According to my Kev mod book the resistor is 1k ohm. On my bike that gives me 0 to -8 degrees air temp adjustment.

I think we need to move this somewhere else on the forum but not sure how. I'll ask my 16 year old son tomorrow - i can hear him even now - "give it here then - it's easy"