Ti-Force 4-2-2 Dyno Results

[GPW]

It's a sick quality system no doubt!

I'll be curious to see how my upcoming 'lil secret project will compare

Shhhh......just a couple more weeks.

Yes, Sir somehow I know things are gonna be looking good shortly.

[Dozerdriver]

Thanks, I think I told you all the time, I knew that set-up would make power. I hope you realize your bike had the top numbers piped/tuned at 183.5 or something like that.

It was 184.22 hp 107.46 tq ( filter in ) ... it could be your dyno is getting happy now with all these Busa runs I want to run my wifes stock Busa before adding anything...maybe get a service too.

[GPW]

It was 184.22 hp 107.46 tq ( filter in ) ... it could be your dyno is getting happy now with all these Busa runs I want to run my wifes stock Busa before adding anything...maybe get a service too.

Give me a call.

[Mr Brown]

Always wanted to get this pipe on the dyno just for that reason. I have read reviews and theories on pipes and the 4 into 2-2 set-up. Someone said it would not make more power. It clearly does, Amazing. You can also see why stock systems make the same as slip-ons. 4-2-2

Different exhausts make different power levels due to pipe design and diameter. Slip-ons make the same amount of power as stock because the factory headers are optimized for emissions not performance, and therefore choke the motor. Any gains that would be realized by the larger diameter and freer flowing nature of the slip-on pipe are negated by the factory header design by the time the can is reached. There is not nearly as much baffling in an after market slip-on as a stock muffler, thus the increased noise, but the performance damage is already done.
A 4-2-2 design can make as much power as a 4-2-1, but will be down on top end hp from an equivalent true 4-1. Conversely a 4-2-1 or 4-2-2 will have a slightly higher amount of torque due to the increased backpressure inherent to the design.

[GPW]

Different exhausts make different power levels due to pipe design and diameter. Slip-ons make the same amount of power as stock because the factory headers are optimized for emissions not performance, and therefore choke the motor. Any gains that would be realized by the larger diameter and freer flowing nature of the slip-on pipe are negated by the factory header design by the time the can is reached. There is not nearly as much baffling in an after market slip-on as a stock muffler, thus the increased noise, but the performance damage is already done.
A 4-2-2 design can make as much power as a 4-2-1, but will be down on top end hp from an equivalent true 4-1. Conversely a 4-2-1 or 4-2-2 will have a slightly higher amount of torque due to the increased backpressure inherent to the design.

Could you post your actual testing to confirm this for me please on a Gen II Hayabusa. I have several dyno sheets that show otherwise, testing almost every pipe made for this bike and which makes power where. The 4-2-2 properly tuned makes power everywhere. Theory without data is just that theory. I can overlay this pipe over any of the front runners LMK but would rather use your data to avoid drama.

[Mr Brown]

No drama, this is common knowledge in performance circles. The Gen 2 Busa is no different than any other internal combustion engine in its function, it's an air pump. More backpressure increases tq, less increases hp.
I'm not interested in arguing with you Greg, as I said this is not some big secret I'm pointing out, it's common knowledge.

[GPW]

This bike was lacking HP and TQ...

The internet.....amazing.

I think if you mix a blue sky and white clouds its still a blue sky, theory.....

[Mr Brown]

This bike was lacking HP and TQ...

The internet.....amazing.

You must have misunderstood my point. I didn't say anything about this particular bike/exhaust combination, I was referring to exhaust types in general.
I agree with you though, the internet is indeed amazing, where else could you learn to dragrace on a dyno or invite people to read about an exhaust "shootout" test involving different bikes/maps/days?
Have a pleasant evening, hope to see some bikes with HPC stickers at my local track soon.....

[GPW]