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Buell Motorcycle Forum » XBoard » Buell XBoard Archives » Archive through June 24, 2008 » XB9 stock muffler compatibility « Previous Next »

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Vtwinster
Posted on Monday, June 23, 2008 - 01:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Will a stock muffler from an XB9S fit on a XB9R?

Is the race ECM compatible with a stock muffler on a XB9R?

Is any reprogramming necessary changing from a race to a stock muffler with a race ECM?

Bike info: 2003, race muffler, race ECM, K&N air filter, XB12 air box cover w/extra holes, snorkel removed.

Please reply only if you have knowledge and/or experience with this issue. Thanks.

(I plan to sell my race muffler if I can convert back to a stock muffler.)
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Buellinachinashop
Posted on Monday, June 23, 2008 - 01:51 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

You want to run a stock ecm with the stock pipe. I was running a race ecm with a stock can and it ran way too rich.

Yes, a stock 9S can will fit a 9R though.
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147db
Posted on Monday, June 23, 2008 - 02:24 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Great choice, Vtwinster. Let the noise to the Harley guys!
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Firebolt32
Posted on Monday, June 23, 2008 - 03:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I plan to sell my race muffler if I can convert back to a stock muffler.
NOOOOOOOOOO......
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Buellinachinashop
Posted on Monday, June 23, 2008 - 03:10 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

"NOOOOOOOOOO......"

+1
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Xl_cheese
Posted on Monday, June 23, 2008 - 03:10 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Why do you say it ran rich?

The ecm learns and corrects the entire map. I think theres a lot of false info out there.
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Buellinachinashop
Posted on Monday, June 23, 2008 - 03:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

"Why do you say it ran rich?"

1) My tech said it was running rich when we hooked her up for a 2nd TPS

2) my plugs looked like they were dipped in an anal queens keester (3rd set)

If the race ecm was meant to run with a stock can, I'm sure it would have been a stock item.
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Randomchaos
Posted on Monday, June 23, 2008 - 03:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The ecm learns and corrects the entire map. I think theres a lot of false info out there.

That there is false info. The ECM is limited in how much it can adjust the fuel level. If what you say is right, then there would be no need for the Race ECM at all.
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Xb9rnutt
Posted on Monday, June 23, 2008 - 04:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Cheese, I have heard that the newer XB's do change for the muffler and air filter you have in. But the 03 don't thats why us 03 owners do the race ecm change and TPS reset.

I could be wrong!

Vtwinster, I have a stock ECM if you are interested let me know. It came off my bike when it had 2500 miles on it.
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Xl_cheese
Posted on Monday, June 23, 2008 - 08:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The race ecm provides more aggressive timing and the fuel maps are adjusted to compensate.

the ECM's from 03 to 07 are all pretty much the same. The chipset changed part numbers once, but the data stored on them is all the same.


Delta from Race
0 800 1000 1350 2000 3000 4000 4500 5500 6500 7000
255 0 0 0 0 5 -0.5 -1 3.5 1 4.5
175 0 0 0 0 6 1.5 2 1 -2 0.5
125 0 0 0 0 4.5 5.5 1 0.5 -1 1.5
100 0 0 0 0 5 6.5 1.5 4 1.5 0
80 0 0 0 0 5 1.5 5.5 1.5 1.5 0
60 0 0 0 0 0 0 0 0 0 0
45 0 0 0 0 0 0 0 0 0 0
30 3 0 0 0 0 0 0 0 0 0
20 0 0 0 0 0 0 0 0 0 0
10 0 0 0 0 0 0 0 0 0 0


Here's the diff of the fuel maps. (negative value indicates the stock has a larger value. More fuel)

Delta from Race
0 800 1000 1350 1900 2400 2900 3400 4000 5000 6000 7000 8000
255 0 0 0 0 0 -1 -8 15 -9 -3 -11 -7 -10
175 0 0 0 0 0 -12 -10 9 13 20 -3 -16 0
125 0 0 0 0 0 -3 5 10 7 14 10 9 10
100 0 0 0 0 0 -9 6 8 -18 4 19 8 15
80 0 0 0 0 0 -15 -2 15 -15 -2 13 13 10
60 0 0 0 0 0 -14 -6 5 10 -7 -5 -1 0
50 0 0 0 0 0 -1 -9 10 9 -13 0 0 0
40 0 0 0 0 0 -6 -7 1 8 -7 -4 0 0
30 0 0 0 -3 2 -3 -5 4 4 1 0 0 0
20 0 7 4 -5 -6 -1 -1 -1 -1 4 1 2 0
15 0 -7 -12 -9 6 4 3 7 3 6 0 2 0
10 0 6 -12 3 0 2 0 0 0 5 1 0 0
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Xl_cheese
Posted on Monday, June 23, 2008 - 08:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

You'll see that the race provides more aggressive timing at the High TPS 3k range as well as High TPS/High RPM.

Good luck looking at the data above. I copied it froma spreadsheet!
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