View Single Post
Old 08-09-2012, 08:43 PM   #136 (permalink)
sendler
Master EcoModder
 
sendler's Avatar
 
Join Date: May 2011
Location: Syracuse, NY USA
Posts: 2,935

Honda CBR250R FI Single - '11 Honda CBR250R
90 day: 105.14 mpg (US)

2001 Honda Insight stick - '01 Honda Insight manual
90 day: 60.68 mpg (US)

2009 Honda Fit auto - '09 Honda Fit Auto
90 day: 38.51 mpg (US)

PCX153 - '13 Honda PCX150
90 day: 104.48 mpg (US)

2015 Yamaha R3 - '15 Yamaha R3
90 day: 80.94 mpg (US)

Ninja650 - '19 Kawasaki Ninja 650
90 day: 72.57 mpg (US)
Thanks: 326
Thanked 1,315 Times in 968 Posts
Quote:
Originally Posted by bschloop View Post
How would I go about tuning it for max torque? I don't have a lot of experience changing things inside of engines, so it would have to be a fairly simple process. I could make an intake tract fairly easily, though.
It would be tough to know if you were improving anything without a dyno. There are calculators for intake length but any of the ones I have played with didn't seem to be making sense. You would try to make the first edge of the torque peak coincide with your average cruise rpm. Which it might do already. Do you have a generic dyno of the same model bike? Here is mine for the CBR250R.
.
.

.
.
With the stock exhaust, my bike probably has the best BSFC at 5,500 rpm and it does have a long snorkel leading to the throttle plate.
  Reply With Quote