Ti force 4-2 or brocks alien head 2 for busa 1440 08?

BUSA1440

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hi guys.i have a 08 busa 1440 with head ported, pcv,bmc filter,yoshimura cams and ti force full exhaust 4-2.the bike works good but i want to change the exhaust with a brock alien head 2.what about the power its gona be better or not?
 
The tiforce you got a dual system? The Alien head 2's I just sold should net 2 hp over normal alien head on a stock motor gen2. I would guess 5hp more on built motor...The weight lose will add a bit..
 
The tiforce you got a dual system? The Alien head 2's I just sold should net 2 hp over normal alien head on a stock motor gen2. I would guess 5hp more on built motor...The weight lose will add a bit..
yes it is a dual system .what do you think about the power between ti-force and alien head 2?
 
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