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View Full Version : The PowerBomb


sandnmyteeth2
02-13-2005, 03:06 PM
I was thinking of purchasing the FMF Powerbomb, I was wondering how well they perform and if they perform well with a 416 or 426 kit? I am planning on running 11:1 compression. And a stage 2 hot cam. Would the powerbomb be any better or worse than a regular hight flow header? I currently have a K&N filter and a powercore 4 slip on. No air box lid. Thank you for any replies.
nosliw
02-13-2005, 06:32 PM
the powerbomb + slip on is just as good as a full system in my opinion.
Hillshooter
02-13-2005, 11:15 PM
I have a 426ex with a stage 2 cam and K&N filter with no lid. It originally had a powerbomb header with a powercore 4 silencer. I replaced that with a Sparks X6 and I couldn't be happier. It pulls much harder through out the entire rpm range and its midrange is absolutely amazing. I'd never run any other exhaust.
Rico
02-15-2005, 07:06 AM
I'm happy with my powerbong and HMF slip on. the FMF powercore sucked and didn't help much compared to the HMF.
red4ooex
02-15-2005, 07:16 PM
I have a power bomb header and a power core 4 silencer and it is fine. My riding partner has a hmf full system on his, and they run side by side and they are both jetted properly
Rico
02-15-2005, 08:06 PM
Originally posted by red4ooex
I have a power bomb header and a power core 4 silencer and it is fine. My riding partner has a hmf full system on his, and they run side by side and they are both jetted properly

Once I put in my 416 kit and cam the powercore seemed to hold it back. That's were the Bills Thunder I put on shined compared to the powercore. It was too loud and I then went to an HMF. Nothing agains the FMF, it was decent pipe and not too loud but it was restrictive compared to the HMF.
yel400
02-24-2005, 07:04 PM
:D
yel400
02-24-2005, 07:06 PM
Originally posted by red4ooex
I have a power bomb header and a power core 4 silencer and it is fine. My riding partner has a hmf full system on his, and they run side by side and they are both jetted properly




YEA RIGHT!!!!!!!!
cals400ex
02-24-2005, 11:46 PM
it is hard to compare two bikes. i have seen bone stock bikes beat piped and jetted ones. rider ability, rider weight, conditon of the motor, condition of sprockets and chain and tires, size of tires, throttle cable adjustments, etc all play a significant role.
jsmith2232
02-25-2005, 08:20 PM
i just got my 400 ex back today with the powerbomb on it, i only rode it for 15 minutes but the throttle response and pick up is great and it sounds really nice.