ninjette.org - View Single Post - Bike Runs Better with CICMOD Air Filter vs K&N

DannoXYZ · August 17th, 2019, 12:02 AM

No need for plastic filter holders as that's 3-piece assembly with foam filter in factory configuration.

K & N is 1-piece that's same size as factory combo, if you have air-gap on any edge, it's not correct filter version (might be for some other bike). My K & N fits snugly all around.

Too many variables to say lean or rich. You'd need to test by adjusting only thing. Such as AFR while keeping same filter in place:

1. Filter-X: add shim to slide needle to richen mid-range, does it make stumbling better or worse? If better, then it was lean. If doesn't change or made worse, then it was rich.

2. Filter-Y: add shim to slide needle to richen mid-range, does it make stumbling better or worse? If better, then it was lean. If doesn't change or made worse, then it was rich.

Now you've got cartesian-product of 2x2 variables for 4 possible combinations. Test all 4 and write down results. Then we'd have enough data to draw conclusion.

August 17th, 2019, 12:02 AM	#2
DannoXYZ ninjette.org certified postwhore Name: AKA JacRyann Location: Mesa, AZ Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot. MOTY - 2018, MOTM - Nov '17	No need for plastic filter holders as that's 3-piece assembly with foam filter in factory configuration. K & N is 1-piece that's same size as factory combo, if you have air-gap on any edge, it's not correct filter version (might be for some other bike). My K & N fits snugly all around. Too many variables to say lean or rich. You'd need to test by adjusting only thing. Such as AFR while keeping same filter in place: 1. Filter-X: add shim to slide needle to richen mid-range, does it make stumbling better or worse? If better, then it was lean. If doesn't change or made worse, then it was rich. 2. Filter-Y: add shim to slide needle to richen mid-range, does it make stumbling better or worse? If better, then it was lean. If doesn't change or made worse, then it was rich. Now you've got cartesian-product of 2x2 variables for 4 possible combinations. Test all 4 and write down results. Then we'd have enough data to draw conclusion.