2008 M1000 set up and testing

[t_hoffman]

I was in Golden, BC for the weekend...Rode Quartz Creek sat and sunday. I have a 2008 M1000. Rode it completely stock all last year...this is my set up for this year.

Boondocker fuel control (I ran the box using duty cycle fueling since I dont have TPS wire kit yet)
speedwerx lightweight intake
speedwerx y-pipe, single pipe, and can
RKT 14:1 head
RKT secondary conversion with rock rollers (sno pro green spring in the middle hole, helix is a straight 36)
Primary spring stock, primary weights stock 80G (overrevving to about 7600rpm..will be adding Dalton adjustable primary weights to get revs down to 74-7500rpm)
Elevation 7500-9000 ft.
Fuel : 50/50 mix of 91 octane pump and VP C111

Sled ran really good and pulled HARD..I am very impressed. It is a completely different sled from stock last year.

The only complaint that I have is a bog/hesitation around 6500rpm. Sled runs good on the bottom and really rips when I hold it WIDE OPEN..... EGT's ran as hot as 1150 on some longer pulls but never over 1150.... I could not tell if the 6500 rpm bog was lean or rich.... I added a bunch of fuel on the boondocker at 6500rpm and it seemed to make it worse. I was hesitant to go any leaner but the sled seemed to run better....Seemed to only happen at around 6500 when the exhaust valve began to open? Could this be remedied using the exhaust valve fueling option with the boondocker box? or maybe it is loading up with fuel a little bit at low rpm and doesnt clean out until the throttle is to the bars? Any suggestions to clean up the engine in the partial throttle range?

Here is the boondocker settings that I ended up using...

3000 -3 -3 -3 0
5000 0 -1 0 0
6500 -4 -4 -4 0
7200 -1 6 26 0
7500 0 5 26 0
7800 0 6 26 0

Thanks

 

[mrquick68]

you sure its at 6500 rpm? your 26 point add at 7200 also overlaps a bit with the 6500. did you try moving that down a bit? say like to 20 even? Those all seem pretty high compared to other's i've seen???

Glad it rips though!

 

[Squeal]

Maybe try the accelurator pump function and add some extra gas around 6200rpm.

 

[mrquick68]

Maybe try the accelurator pump function and add some extra gas around 6200rpm.

the AP circuit only helps when wacking the throttle.

is there where the stumble is?

 

[Squeal]

you sure its at 6500 rpm? your 26 point add at 7200 also overlaps a bit with the 6500. did you try moving that down a bit? say like to 20 even? Those all seem pretty high compared to other's i've seen???

Glad it rips though!

I agree. The numbers I had good luck with on my 07 with the first reflash ( not the secound) are:

6500 -1 -2 -2 01
7200 3 5 18 01
7500 3 5 21 01
7800 3 5 26 02

My setup is the same with Speedwerx suite and RKT 14:1 head. Also I just run 91 octane at 7-10K feet. Not sure why your running race gas.
I have no bog at any rpm, runs good.

 

[t_hoffman]

the AP circuit only helps when wacking the throttle.

is there where the stumble is?

when "wacking" the throttle the sled runs great! I dont think I am going to try accel fuel at the moment. I appreciate the suggestion though.

 

[t_hoffman]

I agree. The numbers I had good luck with on my 07 with the first reflash ( not the secound) are:

6500 -1 -2 -2 01
7200 3 5 18 01
7500 3 5 21 01
7800 3 5 26 02

My setup is the same with Speedwerx suite and RKT 14:1 head. Also I just run 91 octane at 7-10K feet. Not sure why your running race gas.
I have no bog at any rpm, runs good.

Thanks for the input...I tried to look down at the digital tach when it would stumble and it seemed to always be at 6500-6800. I am going to try and bring down the 7200 number to about 20 as suggested. Agreed, above 6000' running 91 octane pump with a 14:1 head is okay. I got a fairly decent deal on a drum of VP so I decided to go 50/50. Runs cleaner and makes more power....but I agree it is not required.

 

[Bushpilot]

I hate to burst your bubble but vp 50/50 does not make more power. It acually burns slower that the 91 octane. Are you getting a bog because of the fuel you are using. I was running 91 in my sled with bogging at 7000, I went to 87 and now sled runs much better without bog.

 

[slyrydr]

you didn't say where your have your egt probles....on my 1000, i used only one and it was about 2 1/2 inches downstream from the junction of the pipe and the y-pipe.....in running the stock exhaust i noted that long pulls would go over 1400 degees...so when i put my mod exhaust system on, i put the egt probe in the same spot....i add fuel to keep it below 1400 and the sled rocks,,,,at 1150, you're probably not getting the powere out of your mods....also, you're using too much race gas for your set-up, which will cause flat performance, as well as giving erroneous egts because the race fuel burns slower, even into the y-pipe and pipe which makes you add fuel, further complicating what you are trying to do