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DannoXYZ · May 26th, 2018, 11:27 AM

No need to change jetting with your mods. Removing the snorkel alone is worth 1.5hp (leave airbox alone).

I have full Tyga exhaust with 20% more flow and 20% more power and I’m still too rich with factory 98 mains in the 11:1 AFR range. One of my sponsors Greg Spears recommended going down to 96 mains and adding washer or two in addition to two I have on needles.

That made top-end even crisper for another 1-2mph on straights (110mph after T1 @ Laguna Seca). But AFR is still too rich in the 11.5-11.8:1 range from 8000rpms onwards. Will probably go down one size smaller on mains and custom grind some needles on lathe with concave mid-section and remove washers.

Or convert to Microsquirt...

May 26th, 2018, 11:27 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 to change jetting with your mods. Removing the snorkel alone is worth 1.5hp (leave airbox alone). I have full Tyga exhaust with 20% more flow and 20% more power and I’m still too rich with factory 98 mains in the 11:1 AFR range. One of my sponsors Greg Spears recommended going down to 96 mains and adding washer or two in addition to two I have on needles. That made top-end even crisper for another 1-2mph on straights (110mph after T1 @ Laguna Seca). But AFR is still too rich in the 11.5-11.8:1 range from 8000rpms onwards. Will probably go down one size smaller on mains and custom grind some needles on lathe with concave mid-section and remove washers. Or convert to Microsquirt... Last futzed with by DannoXYZ; May 26th, 2018 at 02:50 PM.