Paul Bryant full system for 2.5 R3

[vsteel]

Picture of the bike getting setup to make its first run.

 

[dfresh]

Numbers seem pretty comparable with what other tuners and companies have been able to produce. It’s always great though to have options and not everything is about raw hp anyways.

 

[vsteel]

Little more video on the Rocket with the new exhaust.

 

[Idaho Red Rocket 3]

Got the bike on the dyno and got some results. First run to the last run. +12hp and 7ft-lbs of torque increase.

Keep in mind folks, this dyno tuner is at 3,763 feet above sea level. Can any of you guys do the sea level conversion ?

 

[Justdad]

Keep in mind folks, this dyno tuner is at 3,763 feet above sea level. Can any of you guys do the sea level conversion ?

Yes, a naturally aspirated engine will lose about 3% of it's horsepower for every 1000 feet above sea level. So at 3763 feet the engine would lose 11.28% of its horsepower. So at sea level the 172 horsepower would be approximately 191 horsepower.

We can count on losing at least another 9% from the 172 horsepower as we will likely be running 6700 to 7000 feet above sea level. That doesn't count what we lose from wheel spin.

Without a turbo or supercharger altitude is a banging thief.

 

[Paul Bryant]

Yes, a naturally aspirated engine will lose about 3% of it's horsepower for every 1000 feet above sea level. So at 3763 feet the engine would lose 11.28% of its horsepower. So at sea level the 172 horsepower would be approximately 191 horsepower.

We can count on losing at least another 9% from the 172 horsepower as we will likely be running 6700 to 7000 feet above sea level. That doesn't count what we lose from wheel spin.

Without a turbo or supercharger altitude is a banging thief.

Now that 191 (at sea level) is a better figure, more like what I was expecting to see.

 

[Justdad]

Now that 191 (at sea level) is a better figure, more like what I was expecting to see.

I think we will fine on the heat issue too. I can hardly wait until I get to run it through all the gears with a bit of distance. I think the lightness of your system adds another 2 to 3 horsepower not reflected on the dyno but will show during the runs.

I'm sure the horsepower at the engine if measured at sea level would be considerably over 200 horsepower.

 

[dfresh]

Maybe, maybe not. There are many variables in every dyno run which is why “final” numbers should always be taken with a grain of salt and in the end comparing dyno results of different products just gives you an idea of potential results. I don’t think anyone can argue with the fact that the biggest gains with the Rocket 3 comes from removing factory tuning and then other modifications can lead to more incremental gains. In my limited experience, this is likely true for most bikes.

 

[Penner]

If you have a close look at the dyno sheet, the final result is already corrected by a 1.16 factor (+16%) due to air density, temperature and humidity.
As I am pretty sure that Paul´s exhaust will have some gains, you should go there again with a stock bike to compare.

 

[Nashvegas]

If you have a close look at the dyno sheet, the final result is already corrected by a 1.16 factor (+16%) due to air density, temperature and humidity.
As I am pretty sure that Paul´s exhaust will have some gains, you should go there again with a stock bike to compare.

When I put Paul’s pipes on with your tune & Konrad’s tweeks to each pipe, that ‘22 stock engine will probably be cranking everything it can produce as stock. Does anyone have any advice for air filters? I see good numbers on the stock one. Big diff or meh, going aftermarket?