TFI adjusting

[blowndodge]

Originally Posted by macmac

BD's way still running the left side only, thru the cross over tube is probably the quietest, but he is loosing some of all possible air for it. He is making a trade off for reasons known to him and getting less air.

Good observation Mac.

I'm running a left side K&N and a "modified" left side dog bowl that lets in a little more cooler air into the engine than the stock small triangular rubber opening on the backing plate.

I have stock exhaust with the Bafflectomy. This probably allowed a little more exhaust flow but nothing in the way of "performance" oriented.

I can't justify opening up the right side completely and the extra noise if I'm not going to flow the extra air out a free flowing exhaust. I believe in a "matched" system. A totally free flowing intake will only "take in" as much air as the exhaust system can "vent" out. There is no performance benefit from a wide open air cleaner on a "corked up" stock exhaust other than maybe some heat reduction going in.

Trading for harder cold starting and loud intake drown without additional performance doesn't add up for BD.

This is the "trade off" that is "known" to me!!

[macmac]

yeah I knew it was a trade off, and I knew you knew it was, but I never knew why.

Are you still using the breather mouth, in addition to the hole pattern you drilled?

At this point i wish I had 150 ponies on the deck, as about now i have learned the bike and want them. Oh well...

Probably a good thing I don't have them as I'd get busted for doing something stupid anyway.

I don't find I have any cold start problem, and still get apx 40 MPG's mostly 2 up. but 'we weight 300 pounds as one..

I don't hear the air whoosing in, and fer sure can't hear the engine breather puffing.

I do hear the rockers though, and I want to..

These engines are not sewwing machines

[blowndodge]

I wish I got your mileage!

[macmac]

I don't understand with that taller rear why you don't...

I figure every little bit helps.. full syn oils in the engine and the rear end gears. Moderate pot 1 settings lower than most guys here, again a lower setting on pot 4, and 2 as well.

Also I run desert dawgs, like big sails in the wind, but it appears to clean up air flow around me.

I had them off about a week now and put them back on as it came in colder again, and there is a noticable difference in the bubble I sit in.

With out them on for this short time I had forgotten how hard it was to move my legs in the wind

You might cook in southern Cal if you used desert Dawgs though. Thats why I took them off.. Our week long heat wave forced it.

I think that with just using settings like lots of guys seem to do they are missing the point of refinement.

I believe you went step by step though, so really wonder why you don't get similar MPG's to me.

I intake and exhaust are vastly different from yours though, and so it really causes me to wonder with bike de-baffeled and running left side only air, that they can get pot 1 set to places like 3:00 and higher in the first place.

To me it doesn't make any sence.

I don't have reed valves and or the junk that runs them, and I don't have ISC's and the junk that runs them. And now the left side is naked.

I have no cold start issues either. The only issues I have are that 3 times letting off Vista Cruise the engine stalled at speed, but my thumb slipped and I released the throttle too fast..

That probably cause the stall, with a sudden closed throttle plate.

BD, I don't know iif this helps me, and so is a question.

The way i controll the throttle and clutch to shift geears might be a part of this, I don't know, so I will detail some as best I can.

Because the TFI I have is set up to spit, bark and cackel on purpose if I decell hard, I have learned to hold the throttle up some to avoid these sounds when i want quiet mode.

If I roll off the throttle all the way to shift up and or down the engine speaks with one or more of these noises.

So to counter this with throttle controll to shift I don't chop the throttle and just lower RPM a little bit. At the same time I clutch IN only 1/2 way unless I come to a dead stop. At speed where i am either up shifting or down shifting I leave my last 2 fingers on the grip, and so can't pull the lever all the way IN either.

The whole thing takes place in a milisecond, and the shift feels like a autotranny shifting up and or down, and remains quiet so far as the engine is concerned.

Would you suppose the less radical method might be a key, causing less demand for fuel?

I don't have any tach, so I can't be more specific..

I drive stick cars the same way, learing how to not use the clutch at all from after being at a stop in 1st gear.

On most any cars I can warm up the engine parked, and then shut the engine off. Shift into 1st gear, bump start off the start motor and never touch the clutch to up and down shift till I must stop again. I more or less do the same thing on the bike.

In part I learned that driving broken cars, with what ever system that would operate the clutch being defective to get the car to a shop with no wrecker, and when I drove dirt roundy rounds and slaom races called a word i can't spell "gymkanta" "jim canta' "

[blowndodge]

Not sure either mac. If I back pot 1 and/or pot 2 down at all I will get pinging on reg and mid grad gas. Right now I get "almost' no ping on reg in warm weather 90+

My stock rear tire got 11k out of her and had about 2k left to go before I replaced her.

[toophun]

Mac, so are you saying that with the mods Brian has (I've got the same & happy so far, yet I noticed the noise too), that the reeds should be removed?

[macmac]

toophun, I am not sure how Brian and or you have blocked off the reed valves, but you had to have some way.

It is a hell of a lot easier for you guys to tell me how you did that, than make me guess each way possible.

Some guys use big marbles, while others take all the tubing, the vac pod, and then cap off the reed valves, leaving them in place, which ends up as ugly.

Other guys just get rid of that mess from the get go, like me before i knew about Chuckster's coasters.

Now I don't know which came first, Chucksters coasters or me knowing about Chuckster's coasters. In any case i made my own and after seeing his my are very close to his, but a little thinner.

Thing there is he makes to earn a part of his living and I'll not step on his toes.

I don't believe anyone can hear reed valves working even on a all stock bike.

To see if you think the reed valves are ugly or not, go look at the bike and imagine them boxes gone..

I am saying that with any open to the air air filter(s) anyone including me is going to hear the engine working more.

That the oem stock dog bowls sealded tight with a vinal seal, into a deep groove, and the weight of these dog bowls was designed to hinder sounds in the first place.

Now if you take the seal away, and run one of these dog bowls loosely fit over some other kind of filter element you simply are going to hear the engine working more.

If you have ISC's working you will hear them more too.

Me: I am a old school type of guy, and I enjoy hearing the engine at work, so hearing the valve train a work beating a regular rythem isn't anything I fear, and or the thump the exhaust note is.

It ain't my wifes mini van purring, not that she will ever have one married to me in the first place

Ain't happening... She gets what i buy and what I will be willing to fix, or she walks.. When it comes to vehicals I do 150% of all the choices to be made. If and when she wants to do her own service herself, then she can have some say, maybe 0.02%.

I set my TFI on purpose to sound mean and nasty, so it spits thru the intake, barks out the exhaust, and cackels in hard decell, because i like and use these sounds.. I know how to tune these out, but I won't.

Pretty much you have to decide what you want and what you don't, and then of what you don't to get rid of all of it. There is no sence having parts that don't work on the bike at all is there?

If you stuff a marble in a hose to stop a system, to me it is just better to get rid of the whole system.

I can tell guys a lot of things, and the why, How Comes, but I can't decide for them what parts they want and what parts they don't.

[macmac]

BD I will never know how you got that miles out of the brick. i can't see how you did that at all.. I am sure you know mine was dead with 7,000 and i ran it out into late Fall, first salt, ending with 9,000..

You live near the Rock Candy Mountain?

[blowndodge]

Im not hard on the gas mac that's why I got 11k and could have got 13k out of the stocker brick. You'd think my mileage would be real good being easy on the throttle.

[macmac]

Well I think the baffelectomy has too much back pressure to suit the mix you need to not ping..

Your weather and mine are very different. i wore woolies top and bottom last night... No chit!

We had a weel of 90+ in August and no other time over summer was it ever warmer. No 100+ for any day which would be typical in NH. Late Srong and early Fall this time, and i will bet hard coin we get as much snow as last winter if not more like the winter before.

I'll bet first snow stays like it did both of those winters too.

I think I am easy on the throttle too. I ride like grannie wants me too, and that is as if the Nomad was a big over stuffed easy chair..

No roads near me are posted over 55mph, but I can't say I just do the limit, as i tend to ride out 10 mph over sustained.

99% I ride alone,(no other bikes) so have no one to prove squat too. So no radical behavior.

I watch for bear Moose and deer all the time and if i didn't I wouldn't even be posting this.

I can never trust what will be around the next bend and ride that way.

I can ride out on a given road in the AM, see no rain and come back to find wet talc clay (some wicked slippery snot) logging trucks drag on to the road.. Wheeee that stuff is like diesel on tar. This is a very fine glaicer ground silt, and is light blue in color..

It would seem our riding styles are similar. The set up on our bikes is vastly different, but i still can't figure how you didn't eat that brick right up...

You never mention 2 up much if ever, so I guess mostly you ride solo too.. But I weigh more than you do alone, as my bride is most often hangin on fer her life!

She just don't know it, as she is gazing at moon beams in day light..


In my day of salom runs I wasn't fast then either, but I was steady. I could drive at a sstained speed not fast and win races because others would speed up and slow down too much...

Once I got to race a Vette with a kleenx box Austin America.. I had 1,100 cc's against 454 cu in.. Man was that vette guy smokin mad at me...

[blowndodge]

I think it "could" be your reduced speed to some degree.

At the National Rally I rode a couple of legs with a large group.. Trip and I took turns filling each other's tank. He'd fill his and hand me the nozzle and vice versa. Seems we took the same amount withing 1/10 of a gallon. Looking at the other riders pump numbers (we rode in a group of 25 to 30 bikes it seemed we all took almost the same amount of fuel to fill up.

So I must be getting mediocre mileage because of where I live and in Cali if your not riding at least 75 on the highway you'll get run over!!!

I'd like to try 60 mph for a whole tank but there is no road that I could do that on without getting killed!!

[macmac]

No roads near me would be legal riding at over 65, and most that isn't either. I avoid interstates, and don't have any problems finding other north south roads at all, but do in east/ west.

[blowndodge]

I'm "thinking" of trying Cobra Billet tipped true duals in the future. Road next to a member riding into Custer and really liked the sound. Barked real nice when on it but riding next to him it was very quiet and not obnoxious at all.

Maybe getting more heat out of the engine will allow me to turn down the pots a little?

[macmac]

BD, That just might be a point... I don't remember if your goat was gutted or not, but either way the gasses in there have to be confused as to which way is out...

Heat loss on your legs alone could make that change well worth it. I hated that goat belly for the heat it threw out alone. All I could figure was a heavey cruiser needed a stove to fry cheese burgers on and there it was.

I never did figure how to open the it to see the grill though

I can still bake bacon/cheese taters 'tween the jugs like we always could on HD. Handy on a long ride. Just split the taters in the moring add real butter, cheese and bacon. Wrap it good in tin foil and ride 4 hours..

[phenrichs]

the true duals with billet tips is a very nice setup. I have been eyeing those myself. Just need to get momma to loosen up the purse strings a little more.