How dirty is the air filter, what is the fuel mod set to?

Filter didn't look dirty, mod set around 5.

What happens with the mod turned off or set to 2pm.

The reason I am asking about the filter is there has been a few guys over the years even with Power Commanders complaining of the same thing & the problem ended up being a party blocked filter because they had done quite a bit of dusty riding conditions.

Picked bike up yesterday and had fuel and O2 mod removed. Bike was fine but died again after an hour. Wasn't up high this time. Only similarity was it was over 30degrees. Got it towed to home this time. Thankfully I've full care with RACV.

Get some fresh fuel & a new plug in for starters.

Installed the kevmod with a set of mtc's and a stage 2 dna filter. The bike comes alive now :048:
But still have that hard pops from my exhaust when i close the throttle. First i thought that the pops were from running to lean. But with the fuel mod on 6 or 7 it's still the same. Can someone explain this.
Personally i don't care about it , but sometimes i get a lot of angry faces , specially when i'm riding offroad.

The popping in the exhaust is nothing to do with the fuelling. It is the Air Induction System (AIS) operating which bleeds air into the exhaust ports downstream of the exhaust valves to help ignite any unburned fuel. The AIS valve opens and closes according to certain parameters (suddenly closed throttle, cold starting etc.) and is controlled by the ECU. It is purely an emission control device and doesn't affect the fuelling.

Some like it, some don't. The popping and banging can be stopped by either blocking the pipe that feeds the air from the airbox to the AIS valve under the tank, or by completely removing the valve and all it's plumbing along with sealing the hole in the airbox and fitting a blanking plate between the exhaust ports.

Read this thread.

Intalled the fuel mod today as well as DNA filter and cover, and kev O2 controller mod.

A few notes about the install:

- the O2 sensor is a bit "hidden" as it is plugged (into the air box?) right at the front of the seat/under tank, near where it is shown in Kev installation document). you have to pull it out

- May be only on my bike but the wiring to the 02 sensor was way to short to manipulate it, so i started to remove the tank, but realized you can reroute the wiring and then it's ok without moving the tank.

Then a quick ride (50 km city/back roads/highway):
- The O2 controller really works. Much less "jerking" at low rpm/low throttle opening, i noticed it immediately when taking off ! Much much much better in the city traffic. I guess it will help with slow offroad too. Still not 100% perfect but i had to try hard to get "jerking" again. 95% solved (and I have yet to change my chain/sprockets which need it)

- You hear the DNA filter difference. More "roaring" :p

- A bit smoother engine below 3k rpm

- It's hard to tell honestly about performance, the sportier sound may fool me, it seems that the bike takes its rev faster, and gets with more ease to the limiter. At the end of my ride, I was like "hey it looks like the throttle can be opened a bit more than before". I don't think I will win 1sec on a 0-100kph acceleration test, but I felt a real difference above 4k rpm

Hard to tell (again) as i fitted everything and did not test one mod after the other, but i'd say the O2 controller really is a must have. The bike should behave like that stock. Great job Kev.
Filter mods and fuel mod are nice if you have money to spend on them.

Now question.. :unibrow: i set the fuel mod somewhere between 4 and 5 as told in the manual. How do i know if i'm running the engine too lean or too rich, other than looking at the plug? Can it be felt/noticed when riding?

Nice write up.

All my mods have been Dyno tested all A/F ratio's have been confirmed on the Dyno under load, I know 98% where the Adjustable fuel mods needs to be for what mod, the other 2% is the variance between different motors, if you follow my guide lines your motor will be safe. We have not had one burn valve or damaged motor in the 10 years that I have been making these mods.

Well written pepsi, nice and informative , and pleased your happy with results.But I will say you will always be looking for more mods and things too buy its so addictive..