Two Brother's Racing Muffler w/Juice Box and no lid
From Two Brothers:
43.1 hp : Slip on, Juice Box and no lid.
40.5 hp : Stock
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From Two Brothers:
43.1 hp : Slip on, Juice Box and no lid.
40.5 hp : Stock
***Official Dyno Thread***
I've seen a couple of manufacturers have their exhaust systems dyno'd so I thought I would make a thread with it all in one place. Also if you have a custom setup (like Mr. 5W0P3) and you get it dyno'd please post it up here.
Please make sure that you post all of the setup along with numbers represented. (In case someone is at work and may not be able to see hosted images)
Also, please keep the posts in here on-topic as I'd like to sticky this for everyone.
Thanks!
-Gary
****Late edit****
Please post if it's your dyno'd numbers or the manufacturers.
Please make sure that you post all of the setup along with numbers represented. (In case someone is at work and may not be able to see hosted images)
Also, please keep the posts in here on-topic as I'd like to sticky this for everyone.
Thanks!
-Gary
****Late edit****
Please post if it's your dyno'd numbers or the manufacturers.
1 - 20 of 37 Posts
HMF Slip on and Full System
From HMF:
Blue=all stock
Red=HMF Slip on, airbox lid off, Optimizer
Green=HMF Full system, airbox lid off, Optimizer
Peak HP:
Stock 39 HP
Slip on, optimizer, lid off 42.5 HP 3.5 HP gain over stock
Full system, optimizer, lid off 44.5 HP 5.5 HP gain over stock
Optimizer base settings: 1.5/3.5/3.5
(sorry for the tiny pic, the one on their site was tiny too.)
![]()
From HMF:
Blue=all stock
Red=HMF Slip on, airbox lid off, Optimizer
Green=HMF Full system, airbox lid off, Optimizer
Peak HP:
Stock 39 HP
Slip on, optimizer, lid off 42.5 HP 3.5 HP gain over stock
Full system, optimizer, lid off 44.5 HP 5.5 HP gain over stock
Optimizer base settings: 1.5/3.5/3.5
(sorry for the tiny pic, the one on their site was tiny too.)
It's interesting to see the different baseline numbers for stock, which in my mind shows the difference in the dyno's.
The difference in the bikes too, Ive dynoed bikes that were different from each other by almost 2hp stock and modded the same. Any of those an actual member dyno sheet or they advertisement sheets by the manufacturers of the parts? That plays a little part too.
Advertisements...(sigh)
But I have since added that request to the main post and my sequential posts afterward.
But I have since added that request to the main post and my sequential posts afterward.
Are you guys all basically running 93 octane pump fuel, or race gas with the exhaust and fuel controller upgrade?
Shouldnt be any race gas for a 10:1 engine(or a 11:1 for that matter). 93 will be just fine for 10:1-11:1, if it had anything over 100 octane it would hurt power.
<---- Pump gas. (93)
i am actually talking to one of their techs, and they said pump is fine, and all their dyno runs are on pump gas
talking the HMF techs i meant to write on the previous post
higher octain is un-need unless you are running 13-1 compression or higher
What about 92 and 91 octane?
Actually these big engines will need around 100 octane with a true 12:1 build depending on elevation and cam timing. The chamber doesnt have the right engineering to properly run pump at 12:1. The design is too "lazy" to be effecient enough at those levels. The 450s and crotch rockets have alot of engineering in the chambers and cam timing to run pump on 12:1 or there about depending on what brand we are talking.
What ever your permium pump gas is will be fine.What about 92 and 91 octane?
i guess we will have to see when detenation ocures since thats the only reason to run race fuel is to prevent detenation. hey scuzz just for comparison throw in the dyno sheet from the raptor that on the two bros site
You betcha...one sec.
I don't think it would be recommended to run the 12:1 on 93 with a stock cam but should be fine with a stage II or higher. Would have to actually now the cam specs but generally speaking this would be ok.Actually these big engines will need around 100 octane with a true 12:1 build depending on elevation and cam timing. The chamber doesnt have the right engineering to properly run pump at 12:1. The design is too "lazy" to be effecient enough at those levels. The 450s and crotch rockets have alot of engineering in the chambers and cam timing to run pump on 12:1 or there about depending on what brand we are talking.
I thought the raptor had top end power... You have a big 3 dyno sheet for the raptor Bo?
1 - 20 of 37 Posts
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