Evil_keeps_me_young
Registered
So my friend came over with his 08 zx-14 and it sounded different lower tone and throatier. He explained to me that he removed the catalytic converters and the secondary butterflies. I'm sure it sounded lower because of the cats only, but I asked him about removing the butterflies and he said it's a common mod for his bike on their forums...so I tried to remove my cats and after a few hours i took it to a exhaust place and they took them out for 100$. BTW the honeycomb is about 3-4 inches thick on each side!!! So i painted the bored out headers and put some header rap around them...looks nice. Here are some pics...
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My friend came over (the same guy that has a zx-14) to help me put it back together (he's a car/motorcycle mechanic) and I learned something else these bolts at the bottom of the fairings that you unbolt...it's a pop thingy? On the right side no problem to unscrew but on the left side it's kinda impossible to get it back in...so my friend said unscrew it then detach it from the fairing the screw it back to the engine then just pop the fairing back in place. btw spray some wd-40 into the gramit so it slides in nicely.
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So after that i took out the secondary butterflies and started her up cold no problems. I'll dyno it this summer for some real numbers but it has noticeably more torque for the short ride i went on.
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When i was younger all the cars just had one set of butterflies so why do we need two sets? it just seems to restrict the engine more with less air flow in, and the cat restricts with less air flow out. so what do you think? oh btw my motorcycle is DUSTY!!!
View attachment 1513523View attachment 1513524
My friend came over (the same guy that has a zx-14) to help me put it back together (he's a car/motorcycle mechanic) and I learned something else these bolts at the bottom of the fairings that you unbolt...it's a pop thingy? On the right side no problem to unscrew but on the left side it's kinda impossible to get it back in...so my friend said unscrew it then detach it from the fairing the screw it back to the engine then just pop the fairing back in place. btw spray some wd-40 into the gramit so it slides in nicely.
View attachment 1513525
So after that i took out the secondary butterflies and started her up cold no problems. I'll dyno it this summer for some real numbers but it has noticeably more torque for the short ride i went on.
View attachment 1513526
When i was younger all the cars just had one set of butterflies so why do we need two sets? it just seems to restrict the engine more with less air flow in, and the cat restricts with less air flow out. so what do you think? oh btw my motorcycle is DUSTY!!!
