What Happens if....

The 20220 tune is for the production silencer without catalyst in the cat box. You can do better. This is a custom dyno tune by Wayne MacDonald (Tuneboy). It was done on a bike with TORs and cat bypass pipe.



This is richer than the stock tune for your setup (20226) and is unrestricted (2ndaries open 100%) This attempts to quell the decel popping. Make sure to uncheck the O2 sensor box. I had an R3 with this tune dynoed at 140 hp/150 ft lbs.

If you screw with the intake, you can get more high end HP but good luck getting it re-tuned.


Tex...

Me being the guy that rode the short bus....Sounds like you are opening pandoras box...Break out the wallet!

Spend the RAMAIR/Dyno money on booze and babes!
 
Unlesd you are going to replace the entire exhaust, the Ramit or triple filters is a waste of time.
 
The 20220 tune is for the production silencer without catalyst in the cat box. You can do better. This is a custom dyno tune by Wayne MacDonald (Tuneboy). It was done on a bike with TORs and cat bypass pipe.



This is richer than the stock tune for your setup (20226) and is unrestricted (2ndaries open 100%) This attempts to quell the decel popping. Make sure to uncheck the O2 sensor box. I had an R3 with this tune dynoed at 140 hp/150 ft lbs.

If you screw with the intake, you can get more high end HP but good luck getting it re-tuned.

Dougl
Thanks for that. Crap, I just re~checked & 20226 is the tune in mine. So that tune has my secondaries 100% open on that tune? Looking at it without being hooked up to it now it shows a check in the O2 box so I will hook up later & uncheck it. What does that do?
Thank you guys for your input!!!!!!!

Xlr8tion, yea. I dont want to open can o worms
 
The Ramair, with your setup would likely yield a few HP up top, like 5k+ RPM region, but up there's a few HP difference is very hard to judge with the butt dyno! You technically should remap, can you get away with nit doing so..... yes, but you are probably not going to have any power gains without a tune.

Popping in the exhaust is almost always due to a lean condition not rich on injected bikes. It's an intentional feature intended to assist in emissions testing, when you close the throttle ignition gets retarded and the mixture leans out, because the air pressure in the exhaust is lower than the atmosphere it ignites at a much leaner than 14.7:1 ratio, providing fuel free exhaust for the emissions test equipment.

That said, a lean deceleration condition doesn't have anything to do with if your rich or lean when on the throttle.


I'm sure your right about the decel pop. I thought otherwise because of this on dobeck website:

Rich Conditions - Common Side Affects
Engine Flooding
Decel Pop / Backfiring
Lethargic Throttle Response
Excess Carbon Build-up (sooty pipes)
Fuel Smell from the Exhaust

Makes me standoffish on their product now.
But at least i'm perpetually confused :confused::eek:
 
I'm sure your right about the decel pop. I thought otherwise because of this on dobeck website:

Rich Conditions - Common Side Affects
Engine Flooding
Decel Pop / Backfiring
Lethargic Throttle Response
Excess Carbon Build-up (sooty pipes)
Fuel Smell from the Exhaust

Makes me standoffish on their product now.
But at least i'm perpetually confused :confused::eek:



Tex....

Let us not throw Mark Dobeck under the bus yet!

Call Dobeck and talk to Dillon. Mark Dobeck has probably forgotten more in the last hour than many of us will learn in a life time. In the Superbike crowd I used to ride with the only decel pop on lean was from Suzuki's PAIR valve or Kaw's KLEEN AIR; air injection system. Do not lose faith brother-Call and talk to Dillon and if Mark Dobeck has it on his site I would give him the benefit of 5 minutes of your time for him to explain why he is saying mixture too rich vs. the Mixture too lean....This man lives this business day in and out and with no Dobeck there would not be(nomex suit on) a PC3 then ultimately a PCV by the guys that built off his analogue system to digital...No Dobeck No Dynojet

I am ordering mine tomorrow so I will ask Dillon too about the Chart you cut pasted.
 
Dougl
Thanks for that. Crap, I just re~checked & 20226 is the tune in mine. So that tune has my secondaries 100% open on that tune? Looking at it without being hooked up to it now it shows a check in the O2 box so I will hook up later & uncheck it. What does that do?
Thank you guys for your input!!!!!!!

Xlr8tion, yea. I dont want to open can o worms
The Triumph 20226 tune has the secondaries partially closed. Look at the secondaries table in TuneECU. You can see how this lowers the torque from about 2300 - 3500 rpm in the dyno chart below. Triumph did that on purpose - probably to reduce the stress on the transmission. You don't want to open the secondaries open 100% in 20226 because it will run lean - the fuel won't match the air flow. Assuming you have the TORs and cat bypass, try the 20050 decel tune in the link. Unchecking the O2 box prevents the ECU from using the O2 sensor signal, that is, going into closed loop. The ECU uses that signal to adapt the fueling to keep it lean at low throttle position - for emissions. It does nothing above about 30% throttle. When you uncheck it, the ECU uses the fueling specified in the fuel tables. 20050 decel has some fuel added at low throttle, so under hard decel at zero throttle, the popping is reduced. It doesn't eliminate it completely but it's better than the stock tune. Let me know if you don't like this tune.

Yuill_Bros082406.jpg
 
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The closed throttle but in gear scenario can have popping from rich as well as lean, but lean is almost always the cause on modern fuel injected bikes.

If you can see the flame coming out, like on mine at night if I do a red line pull in 2nd gear and let off, the flame color can help tell if it's rich or lean. Blue flames is usually lean, bright yellow/orange fireballs are rich.
 
The closed throttle but in gear scenario can have popping from rich as well as lean, but lean is almost always the cause on modern fuel injected bikes.

If you can see the flame coming out, like on mine at night if I do a red line pull in 2nd gear and let off, the flame color can help tell if it's rich or lean. Blue flames is usually lean, bright yellow/orange fireballs are rich.
Under hard decel at zero throttle, the popping is caused by too lean. The fuel combusts not in the cylinder but in the manifold. I reduce this by adding fuel to the zero throttle column in the Power Commander.
 
Oh, I know, was just pointing out that a grossly rich scenario can elicit fireballs as well. A good example can be seen if you look at tuned Lambos throwing fireballs in london, they are a perfect example of rich afterburn out the back. One of them recently burned to the ground when a giant fireball lit a brake light on fire and well...the rest is history.


Personally I like the pops/growls/bangs are fire than happen during deceleration conditions, without it I always feel like something is missing. The majority of race cars, big money tuner cars, and package companies (saleen/ligenfelter/etc) all exhibit lean afterburn.
 
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Thanks to all of this input I now understand much more than before & see all of the points given. I am not at all concerned with the decel pop, I just made reference to it when asking if I needed to re-map if I installed RamAir since I know that will make system have more air in the air/fuel mix because I thought I may already be to rich per the do beck chart. all of those points given are good points. I have used the tune ecu for all the things it will do other than re-map so if I do go RamAir I will just need to summon up the courage to use that aspect of it. The 20050 may be the way to go. Also I sent HansO a request that he says he can provide one to, but is having laptop issues he's trying to fix.
Thanks so much to ALL of you for this info. what a pool of knowledge on this forum!!!!
 
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