So, why is my middle cyclinder....

....running like this:



I took this screenshot above after installing 20219. However, I've previously noticed that the middle cyclinder tends to "blue" the exhaust manifold more than the adjacent one's, ever since I got my Rocket.

Also, looking at the F1 tables in Tune boy, seems that the values for cylinder number two are more "pronounced" in certain areas. I'm trying to imagine now; is this by Triumph engineer's design? Is the middle cylinder supposed to get more air and subsequent fuel mixture?

Scratching me head here....

Here's another shot depicting No. 2 getting more than it's sisters on each side of it:



Notice the Map1 - Map2 - Map3 values....

Easy peesey one this( /looks for the smilies) You need to balance the throttles. If you got triple filters on its easy, if you still have standard air box then it can't be done( least wise I don't think so) because the airbox is in the way of the 2 adjuster screws, & if you remove it to get to them, you change the throttle pressures by opening them up.The 2 throttle adjuster screws live deep between the throttle bodies either side of the middle one, the screw head sits vertically & points downwards. Lift the tank for access .You adjust throttles 1 & 3 to match 2. Lemme check if my camera has charge .. try to post a piccy

What filters are you using?

Homing in on the yellow head( painted) screw. This is throttle body 3 adjuster & the body 1 is in the same place on the other side of the central throttle body.

I am thinking two things but I must ask you a couple questions and don't take this wrong . First did triumph load the tune or did you with tune boy? The reason I ask is where did you get the tune and do you have the same exhaust as the tune was made for? If someone had each cylinder tuned his exhaust could have required the difference.

why don't you try another tune and see if its the same difference and was your pipes doing the blueing in the center pipe berfore you changed tunes? If so you might just need to balance your throttle bodies the two outside ones need to be adjusted to the center one when doing this. Plus double check you vaccuum lines as Nev stated ina previous post the little line hooked up wrong can mess with a cylinder. Rmember the center cylinder could be different from triumph as the cooling of it could be less then the other cylinders. First I would try another tune I can look and see what I have in my older files before I installed the blower kit.

A small tweak one way or the other on the 2 screws with the engine running & tuneboy open on that page, & you will be able to balance them. Mine all sit at 495 ish at idle

Hi Guys,

Thanks for all of your replies. I am still using the stock Classic pipes and the OEM paper air filter. Only change so far was the installation of the cat bypass.

The middle header at the exhaust outlet of the cylinder was more of a bluish color from the onset of me taking delivery of the Rocket. I even had Triumph in Frederick check it; they said it had the correct tune in it.

The 20219 tune that I just installed came with the tunes included in the TuneBoy software. Notes on it say it's for a Classic with cat bypass and aftermarket pipes. Since my pipes are still OEM, I figured that the tune may run a little more rich (which I want) since I think it is running more to the lean side. and from what I've read, Triumph purposely makes the stock tunes borderline lean, for emissions.

Sure wish I can figure out a way to adjust those screws to balance the throttles with all of the stock air ducts still installed over the throttle bodies. I guess I may going the route of the triple K&N's next. God, when does this madness stop?

idk said:

Don't EVER use a "Classic" tune. They are too restricted. If you are going to use a Triumph tune (even a modified one) get a "Standard" tune. You will be happy that you did.

Click to expand...

Actually, I did a comparison of the Classic and the Standard tunes. I didn't see a difference in values really, from within the tables. Which leads me to a couple of thoughts:

1. How "authentic" are these tunes that are shipped in the TuneBoy Software?
2. Are all of these "authentic" Triumph Rocket Tunes simply the same, just copies of each other that TuneBoy provides?

When I first picked up my Classic, it had the OEM Classic tune installed. I later downloaded 20222 and opened the secondaries to 100 percent. What a difference that made! However, I wish I ran the 20222 as it was first, to see if there was any negligible "seat of the pants" difference between it and the original Classic tune.

Currently, I have yet to take my bike out with the 20219 tune installed (with secondaries opened 100 percent). The exhaust leak is delaying me until I get that addressed today. Then I'm going to take her for a hard run and see if my "seat of the pants" Dyno detects any difference. Of course, now I have the cat bypass installed, so that will probably skew things a little....

I'll reload the 20226 or 20227 if the 20219 doesn't give me satisfaction.

Thoughts?

Hey will I was not totally thinking straight last night when I posted. I should have waited for the morphine to wear down a little first. Anyway if and I believe IDK will afirm this as he is better at tune boy then I. but the page from tune boy is great for adjusting the throttle bodies. and that is a problem you are having by the looks of the screen. I think no matter what tune you run your throttle bodies will be out of balance until you adjust the two out side ones to be in sync with the center one. fueling differences or actually what you reading on the F tables is the amounbt of air the ecu is being told is going into each one soit can calculate the the amount of fuel needed per A/F percentages on the ratio tab. This can be different as heat/cooling transfers can be different for each cylinder. If you look at it this way say you have tripple filters and lets think of how it could be possible that the front cylinder gets more air up do to it being up front then the other two you would then need more fuel to maintain the programed fuel ratio so you go to the F table and tell it its getting more air and the ecu looks at the programmed ratio it is supposed to have in that cylinder does the math and bam squirts the amount of fuel needed. same goes for the other two cylinders. Now toss in how each cylinder cools compared to its location and the temperature of the air going in. and you have a bunch of factors that can indeed make cylingers requirements be slightly different.

My point is all that has nothing to do with what that page is showing you which is that your throttle bodies are out of balance. so balance them and ride like the wind.

Also for those that have no Map sensor the turbo/blower guys you can use the standard vaccuum balancing kits to achieve the same thing.

willtill said:

Hi Guys,






Sure wish I can figure out a way to adjust those screws to balance the throttles with all of the stock air ducts still installed over the throttle bodies. I guess I may going the route of the triple K&N's next. God, when does this madness stop?

Click to expand...

Triple K&N or sponge unifilters are the way to go if you have tuneboy) Not only is the throttle balancing easy, but the filters give the bike a significantly faster 'on the throttle' reponse.... the bike feels sharper, & is more powerful.