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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Engine » Big Mechanicals: Head, Cyl, Piston, Rod, Crank, Flywheel, Cases, Bearings » Archive through July 16, 2008 » Extra power from Wiseco pistons on XB12R ? « Previous Next »

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Vagelis46
Posted on Thursday, January 03, 2008 - 09:54 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I am thinking installing the Wiseco pistons to get the compressiion ratio to 12:1 from 10:1.

I already have :

Micron exhaust
race ECM
Open airbox & KN
rerouted breathers
NGM Iridium spark plugs

Does anyone know how many extra RWHP (if any)I will get from the the Wiseco pistons ?

Are there dynoruns, at the same dynamometer, before an after wiseco pistons installed ?

What other mods would anyone recommend ?

Head work ?
cams ?
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Buellrcr
Posted on Thursday, January 03, 2008 - 02:24 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

if you put stock 9 pistons it brings the cr 12to1.in a 12 only. u can easy get 100hp and 80ft lbs torque. with the set up you have.
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Buellrcr
Posted on Thursday, January 03, 2008 - 02:26 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

is the race ecm the programble one
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Vagelis46
Posted on Thursday, January 03, 2008 - 02:43 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks,

But what will the gain be ?

+5RWHP?
Do I need to reprogram the ECM, or the open loop of the ECM will do the job, of setting the proper fuel ?
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Buellrcr
Posted on Thursday, January 03, 2008 - 03:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

will you will have to change the spark table, and fuel table.and run a higher octane gas or it is going to ping. u will pick up a little hp and torque. depends on how its tune and the fuel you use.
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Bad_karma
Posted on Friday, January 04, 2008 - 12:54 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Vagelis
I think I read somewhere in my automotive magazines that you can expect about 4% increase for every full point of compression increase.
Joe
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Alessio66xb12r
Posted on Saturday, January 05, 2008 - 07:08 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Vagelis : "...or the open loop will do the job"

not "open loop" its the "learning mode" during " closed loop" operations to change AFV values . the " learning mode" can only make the whole fuel map leaner or richer ...for sure not the best way to tune xb motors .
anyway it works only for light mods like muffler , air filter , airbox....
for me in this case better try with some by-pass module like TFI( fuel only) or RAPID BIKE(fuel and timing) or , best way, try DIRECT LINK software or ECMSPY software , with them you can change the map values into your ecm ( D.L. fuel and timing , ECMSPY fuel only ...right now ).
there is a sponsor here (trojan ) who used wiseco 12:1 on their 1200 xb race bike in 2005 .. or 2006 ...ask them for some info.

bye Alessio
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Vagelis46
Posted on Sunday, January 06, 2008 - 11:37 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Ciao Alessio.....
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Alessio66xb12r
Posted on Sunday, January 06, 2008 - 04:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

ciao Vagelis
what you think about micron exhaust ?
do you like it ?
in the future i want to change my exhaust for a better one but i don't know which one.
bye Alessio
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Vagelis46
Posted on Monday, January 07, 2008 - 04:51 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

What exhaust are you using now ?

I think the Micron looks very good, and I like the sound...... Also the price is reasonable for a full exhaust .

But I would like to try the Buell race can, since it gives +3HP from 4800rpm to 6800rpm, and when I push hard this is the range I use.....
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Alessio66xb12r
Posted on Monday, January 07, 2008 - 05:18 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

hi
i had a lot of home made exhaust but the best for me to use with stock headers and race ecm is the race kit can .
now i'm using a race kit modified can.you can see it in my profile , but i think with my set ( 88") a micron or a full h.p. reverso(race type) its better.
bye Alessio
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