very impressive thread PowerDubs . one thing that is apparent is that it is a complete impossibility that the torque curve on the Wyvern 4 into 4 exhaust i have on my bike is correct , here is the link = 5th photo
https://www.samurider.com/?p=9192
Material of pipes: Steel
Material of mufflers: Stainless Steel
Weight: 16.8 kg
Sound Volume: 92 db
Horse Power: 90.8 (STD 77.2)
I don’t see anything impossible about the curve you posted. What makes you say that?
Sent from my iPhone using Tapatalk
(06-26-2018, 01:59 PM)PowerDubs_imp Wrote: [ -> ]I don’t see anything impossible about the curve you posted. What makes you say that?
Sent from my iPhone using Tapatalk
how straight up off idle and have that much torque plus the huge HP gain.
I know my bike feels very strong and i cruise around town between 2,000 - 2500 rpm with very good power even two up and we are " Normal Size Americans " ......
Can’t get too caught up in minutia - scaling and rpm on a dyno aren’t always right.
For example your chart says kg/m. And if both our charts were scaled correctly the tq/hp would intersect at 5252 and the curves would appear a little differently. But the numbers would not change.
Dynos are really best suited for exactly what I am using it for- comparison on the same bike, same dyno as a judge of changes made. Really nothing nothing more than that.
If you are curious what your bike does, instead of a advertisement- I am sure there is a dyno somewhere near you.
Sent from my iPhone using Tapatalk
really not concerned and baby my engine , it is what it is .
only had my Model A Truck on a Dyno for tuning
Dunno, but I love this thread. Looking forward to the final outcome....
(06-26-2018, 02:42 PM)use2b_imp Wrote: [ -> ]really not concerned and baby my engine , it is what it is .
only had my Model A Truck on a Dyno for tuning
What else is done to the bike other than the exhaust? 100% stock breathing otherwise?
Loosing the cats would really make me want to adjust the fueling. I would think they already blocked the pair system somehow or you should be getting decel popping.
I follow with great interest what you guys are doing and admire your technical knowhow but I will leave my engine alone as I am very happy with the power/torque for my kind of riding at 68.
The bike is perfectly fine as it comes from the factory other than a slight low throttle twitch in a parking lot, etc.
I just like playing with engines to see what I can get out of them.
Sent from my iPhone using Tapatalk
(06-26-2018, 11:05 PM)PowerDubs_imp Wrote: [ -> ] (06-26-2018, 02:42 PM)use2b_imp Wrote: [ -> ]really not concerned and baby my engine , it is what it is .
only had my Model A Truck on a Dyno for tuning
What else is done to the bike other than the exhaust? 100% stock breathing otherwise?
Loosing the cats would really make me want to adjust the fueling. I would think they already blocked the pair system somehow or you should be getting decel popping.
What else is done to the bike other than the exhaust? 100% stock breathing otherwise?
Loosing the cats would really make me want to adjust the fueling. I would think they already blocked the pair system somehow or you should be getting decel popping.
have no idea what was done to the bike but it starts , idles and runs perfect I see no Cats but has an O2 sensor