2-1 and 2-1-2 EC chips, effect on fuel

[sinex]

so the 2-1 chip provides 18% richer fuel over the standard, and the 2-1-2 8% does that mean both would do less mileage in terms of range over the standard EC Chip? and that the 2-1 would produce more BHP power than the 2-1-2 termi kit, I guess the optional full racing 2-1-2 kit with an new EC takes it up to the 2-1 level, interested in any thoughts

[Monstaman]

K, no chips, they come in a packet in various flavours.

The 2-1 at 18% will not make anymore horsepower with the std cams, in fact it will probably "bog" it and stifle the hp from over fueling.

My 2-1-2 ECU at +14 was doing the same MPG as Doons bike with the STD ECU but with a lot more grunt available, probably mine was running optimally with the headers, mufflers and airbox mod as well as a std bike is fairly well blocked up.

2-1 will give a slight better power but your bigger advantage is the weight saving, until you step up into cams etc you are wasting your time fueling it up PAST the optimal level as this becomes counterproductive.

[sinex]

so Monstaman

having the 2-1-2 upgraded to a full race exhaust, without the cam change is a waste of time?

[kyle_01]

now that the weather is getting nicer i have had a chance to run some back to back tests of mileage per tank with my hyper. termi full 2-1, dp race ecu, dp airbox/filters, 14t countershaft sprocket. stock cams.

highway riding, not over 80mph. fuel light consistently on between 60 and 65 miles. i put 10 on my reserve and fueled up with 2.9 gallons.

i feel that this bike is running rich (based on what my nose is telling me) plugs look fine though, and there is definitely no "bog" of any sort anywhere in the rev range...

this bike, if you remember from my previous posts, was reportedly "dyno tuned" so who knows.

what would you guys reccomend for a plug in fuel management thingy (along the lines of the fuelpack, etc.)

thanks-
kyle

[johnchypermotard]

Originally Posted by Monstaman

K, no chips, they come in a packet in various flavours.

[AXE]

Dyno tuning doesn't get you much of anything except some numbers, unless you are running a PCIII, Rapid Bike, Nemisis custom mapping tool. I can tell you for a fact that my bike consistently lost fuel mileage with every mod I have done and I have hand calculated mileage and been on the dyno three times to check performance.

Stock, I could easily run 120 miles to the tank (100 miles for low fuel light to come on). With the DP ECU, DP lid, DNA filter, and slip-on Zard Top guns it dropped to somewhere about 10-12 miles per tank. With the addition of the Zard headers and cat eliminator it lost another 10-12 miles per tank. With the addition of the PCIII I lost another 10-15 miles per tank.

I figure I went from getting around 38-40 mpg stock to 25-28 mpg after all the mods. I am on the throttle hard and often, but the fact remains you will lose significant mileage with these type of mods regardless of ridng habits.

I too feel my bike is a little on the rich side, but the dyno and performance results are hard to argue with.

Out!

[GMP]

To answer sinex's last question, NO its not a waste of time. What Monstaman means is that using a cam kit ECU WITHOUT the cams may be a waste as the bike will likely be too rich. The 2-1 #187B ECU works very well for open slip ons, open airbox lid, and gauze filter (BMC, K&N). It even works well trimmed down a little with the stock cans and no CAT.

The dyno doesn't tell the whole story as far as results from the exhaust/airbox/ECU upgrade. A few HP hardly seems worth it. The much bigger advantage, IMO, is the huge improvement in response, smoothness, and heat reduction. Its the way the bike should run, I can't see that lean burning stock setup being good for the engine over the long haul.

I think these bikes may take a while to really break in and get the best milage. Once I crossed the 5K mark I started getting 10 - 15 more miles before the fuel light. Same approx temps, altitude, ECU trim.

[Monstaman]

Originally Posted by GMP

What Monstaman means is that using a cam kit ECU WITHOUT the cams may be a waste as the bike will likely be too rich.

Thanks GMP that is exactly what I was trying to get across, Sinex all the intake, fueling and exhaust mods have to balance so you can't fuel the thing right up and have a factory intake or leave the cat in the exhaust.

The progression of tuning is about balancing and optimising and as GMP points out the running of the bike and thus the smoothness when it is fueled correctly.

Having a dual spark engine allows a slight better acceptance of fuel /air ratio differences.