whittlebeast
Well-Known Member
I was wanting to do a back to back test of my Walker High Mount with quiet option compared to my stock exhaust.
Both cats were in place when testing the stock exhaust but the EXUP valve was disconnected. My stock flies and
stock air box were both intact for both tests.
Both tests had the smoothed stage 1 tune from Dukes pack.
On the bottom is seconds and on the left is Geez acceleration
Red is stock exhaust, yellow and green is with the high mount. Get a load of how repeatable the results are by
comparing the yellow and green lines.
All sweeps were done by snapping the throttle open from 0 to WOT as fast as possible from close to 2000 RPM
and held till redline. The trace indicates that it took me .4 sec to get to full available torque. This works out to
14 to 77 MPH in right at 3.5 sec. Notice how flat the torque band is on the can exhaust as indicated by the
very flat geez pull.
The gain in the midrange torque works out to 10% but I leave 5% torque on the table up top.
Have fun testing
AW
Both cats were in place when testing the stock exhaust but the EXUP valve was disconnected. My stock flies and
stock air box were both intact for both tests.
Both tests had the smoothed stage 1 tune from Dukes pack.
On the bottom is seconds and on the left is Geez acceleration
Red is stock exhaust, yellow and green is with the high mount. Get a load of how repeatable the results are by
comparing the yellow and green lines.
All sweeps were done by snapping the throttle open from 0 to WOT as fast as possible from close to 2000 RPM
and held till redline. The trace indicates that it took me .4 sec to get to full available torque. This works out to
14 to 77 MPH in right at 3.5 sec. Notice how flat the torque band is on the can exhaust as indicated by the
very flat geez pull.
The gain in the midrange torque works out to 10% but I leave 5% torque on the table up top.
Have fun testing
AW