Ulmer Air Box Mod.

yes its worth the money...did the airbox on my 07 attak....seems to work good little bit more power...had to ajust my co2 to -10 to get rid of the low end bog....then once i added the exhaust it really complimented the airbox mod...i gained about 200-300 rpms by adding the exhaust....reclutching now...its gonna pull good...you will be pleased with ulmers very good people to deal with....after support is top notch
 
-10? if your getting a bogged out sound when you hit the flipper you made it leaner? I got the air box mod too and it only bogs when the engine is cold/warm. Once its warm no problems so I never touched the o2. Ulmer says if the motor is cold it's going to bog no matter what.
 
yamahahaapex said:
-10? if your getting a bogged out sound when you hit the flipper you made it leaner? I got the air box mod too and it only bogs when the engine is cold/warm. Once its warm no problems so I never touched the o2. Ulmer says if the motor is cold it's going to bog no matter what.

yup -10...it was bogging when i installed the airbox at first...tried adding fuel from 5-25 still bogged even worse...took some fuel aways perfect after that..then added the hauck exhaust and im back at 0 now...apex im located about an hour away from you...
 
Yeha I run the local station out here. Ride every weekend since derbys are on like crazy. 6200km in 3 years.

Niko---I have taken out my yellow-pink-yellow and put in the black-silver-black if my memory serves me right. And changed the weights to three rivets per weight instead of two. I started to spank the rev limiter with this air box mod and quite possibly running regular gas for the first time in 3 years.
 


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