[800vtwin]

Dont listen to the garbage that mudblogger spews out. He has never tuned anything or monitored anything is out to lunch on 99% of his skewed beliefs. He doesn't understand or has ridden what a tuned engine feels like and runs like. And he doesn't realize that a factory mapping is for a factory engine, along with certain goals of emissions and a 3 year warranty. When one has different goals and different airflow then a completely stock bike, mudblogger just gets overwhelmed and lost.

AFR is a great indication and tuning tool. However, it takes experience to learn and use that info. The best afr for any particular engine range has a lot of variables. The most important thing is just being within an acceptable range for engine safelty.

Currently, your real only concern would be to see what the afr is. Fix the afr at wot as the factory goes too rich for best power. And also look at the range throughout so you don't end up with hot exhaust and melting plastic. As well have an engine that is not unneedingly overheating on you or blowing out your exhaust packing or piston rings early from too much fuel.

Your best bet is to talk to the manufacture of the exhaust or tuner you bought. They actually test things and give you straight answers. They will guide you a lot better than opinions of internet wannabe's.

 

[800vtwin]

1 - Your simulation software is designed to "miminc" a dyno. And it is a wide open throttle only. Therfore trying to apply any information to anything other than wide open throttle is pointless and wrong.

2 - it has been proven that the cam simulation is nothing even close to real world.

3 - A NARROWBAND o2 sensor is used for diagnostics and light load closed loop scenerio's. WIDEBAND o2 sensors are used for tuning and insight to combustion events.

4 - as soon as a user changes anything at all with the airflow or fuel delivery, the operational parameters of the OE mapping have been exceeded. Good or bad.

 

[800vtwin]

AFR is a valid indication of combustion. Air and fuel is what an engine lives and breathes on. Measuring the after effect and calculating it it is one of the best resources any one could have. Pressure of the intake, exhaust and chamber during combustion is another. (if you have $10 000). Exhaust temperature is good along with afr. But then that gets complicated to many.

The practicability of using afr to reference air and fuel is just as useful and accurate as calculating air with pressure and temperature. Its doing a calculation based on known facts.

Willy is about the only joke.

 

[800vtwin]

dont really have nothing in mind except that both units i have are tuned correctly with mods they have on them. The wifes unit (800r) was backfiring (have HMF Performance slipon) evey now & then when going down hill but since then i added a dobeck tuner at which it solved the backfiring but sucking gas. Using 50% more gas( was around 25 mpg) than it did without a tuner. I've been talking with Dobeck & doing some trouble shooting with them on hers. On my unit (916cc), none of the issues you mentioned. Can't say much about the gas it uses (916), i get around 11MPG.

The best thing you could do for either is invest in some wideband equipment. And get your power you paid for and the gas mileage you don't want to pay for.

 

[800vtwin]

i am correct about the fact that joe and i need to find a drag strip. we have killer quads with no one to prove it to. i ride with hundreds of quads but they are mostly stock with a couple of posers who won't run their stuff;;;;"i've got too much money in this thing..." blah, blah.

too bad i am a week away from Learjack!! i don't have that much time or ambition. LOL

You butchered your quad because you don't know or understand how to tune it. It is "untrailable" in your words. Which means it runs like crap at certain throttle positions. And it overheats. Which means you are way too lean in spots.

 

[800vtwin]

incorrect. it is not only invalid it is not certified on any continent for exhaust anaylisis. that is more than lame, 800V. correcting MAP is the first step in engine tuning. then if an O2 sensor is all you can afford, and you can't use any experience to final tune it.....well you are basically screwed.

Wrong. All analyzers including 4 gas and 5 gas use oxygen as a reading. Duh. Why would it be there?

The reason there is no spec for afr or oxygen s because is is redundant in relation to the combustion event. A lot of vehicle have air introduced. And when using an exhaust recirculation, the left over oxygen again is not specific to the combustion event. Downstream from a cat would measure the efficiency of a cat. And that has no bearing on what the combustion event did or whether the engine or cat is leavin that left over oxygen.

What matters is the pollutants. And oxygen is not one of them (only need to spec allowed - raw fuel, unburnt fuel, half burnt fuel, oil, and greenhouse multipliers)

By the way - the people that programed what the ecm does with the map in fo use an o2 sensor. Your nascar hero's will have an o2 in there exhaust too.

You need to learn how to read then read a book. I don't have time to write you one.

 

[800vtwin]

you mistake "hard to put on the trailer" with throttle responce. LOL

you obviously have not read my threads on my cooling system mods?? if it ran like crap i would fix it. even if it meant buying your ECM.

Dude, don't even put the words "buying my ecm" into a sentence. I would never sell you anything. You would never understand it.

No money in the world is worth ever trying to provide tech support to you.

 

[800vtwin]

You are beyond help. And most things are beyond you.

I am sure there are a lot of companies that will still take your money. I am just not one of them.

 

[800vtwin]

lol. There goes willy. Round and round and round again. Subject to subject with bs and more bs.

All i got out of it, is that your stock machine was emission compliant. Then you butchered it. And dont have a clue whats happening now.

Your first read should be understanding the differences between a narrowband o2 sensor and a wideband o2 sensor. You dont even get that yet.