loss in power

[davedeez]

I've got an '06 busa with a tre, fullsystem, large air box mod, bmc race filter and a custom map.Dynoed at 171.5 whp and 101.3 ft-lbs. Now for seemingly no reason it is down 20+ hp, but still runs smooth. Does any one have any ideas of what could be wrong?

 

[racerV]

You have become accustomed to the power and need to upgrade to an 08.

 

[dadofthree]

Or turbo

 

[dadofthree]

Leave room for going stage II in a few years

 

[Tufbusa]

Could be the dyno and not the bike?

Actually, the 171 HP with your mods seems a bit high to me? Could be the original dyno that's the culprit?

 

[mike1180]

Welcome!



Any chance it lost the map?

 

[Commuta_Busa]

how do you know it's down 20hp? How long after the initial 171hp reading?

 

[racerV]

Could be the dyno and not the bike?

Actually, the 171 HP with your mods seems a bit high to me? Could be the original dyno that's the culprit?

Now that you mention it, it does seem high. I had an 05 with similar mods and at a Dyno Day at Lees in San Diego, I only got 156 HP which I was told was pretty consistent with others.

 

[jdsbusa]

Contrary to popular belief, a TRE does NOT give you an added 20hp so the busted TRE theory goes right out the window.

Perhaps your butt dyno is just broken??

 

[dadofthree]

Contrary to popular belief, a TRE does NOT give you an added 20hp so the busted TRE theory goes right out the window.

Perhaps your butt dyno is just broken??

Is that SAE or STD

 

[davedeez]

Both figures were done on the same dyno. The shop where the work was done has a wall with dyno figures with similar mods ranging from 168 to 175 whp.

 

[davedeez]

It was done at Joe's cycle in Mechanicville,NY.He has already ruled out loss of map,compression loss,fuel management.

 

[davedeez]

I rode with friends '07 busa stock and his will walk away form mine.I've got about 80lbs. pn him so we switched and the same result .

 

[DEMMYM]

Start small,

Air filter, Plugs, Rule out general Maint first.

Last thing you want to do is compare it to your buddies 07, The 07s are the fastest.



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[davedeez]

I changed the plugs about 5 months ago w/ngk ir's. I own a body shop, thats where the bike is keeped so I clean the filter alot. When I got the bike back the first time it was awesome ,it pulled hard. Again we switched bikes and he felt it was faster, he was clutching wheeles in 3rd.

 

[davedeez]

What do you think about it jumping a tooth in cam timing?

 

[carlsbadbusa]

uhhh...whats a TRE

and did some one say Lee's .... bike is probably missing something now.......