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The only thing I don't like is the lugging at low speed. I did a stage 1 with TAB Mufflers and an HD breather, loaded a Stage 1 tune with the SE Street Tuner. I haven't done a Smart Tune yet but am planning on it. I'm just trying to get it as smooth as I can.
The sweet spot for that motor is 2300 rpm or higher. Like someone said, drop down a gear to avoid lugging the motor.
Im talking about 1st gear lugging. This bike seems to do it worse than my previous bike.
this sounds unusual..I've ridden two different stock 121 VVT bikes and haven't recalled that behavior..did it change after the exhaust and tune? in Sport Mode the throttle from taking off in 1st should be instantaneous, even lurching forward too quickly, so much that I dialed the sensitivity back even on my 117 non VVT..not sure what's going on but you could test ride another new that is bone stock to compare, even take a moment to create a Custom Ride Mode on the demo bike dialing down throttle, or you can even increase it this is the fir stance instance I have heard of 'lugging feeling in 1st gear'
I did a stage 1 with TAB Mufflers and an HD breather, loaded a Stage 1 tune with the SE Street Tuner. I haven't done a Smart Tune yet but am planning on it. I'm just trying to get it as smooth as I can.
Try doing the tuning first. maybe the mufflers have had an affect?
I am not sure I could call 2300 rpm a sweet spot in any build, regardless of the cam installed or the tune!
I would agree, it's closer to what I would call a minimum operating rpm under a load.
You said it better than me, lol. With its taller gearing, the stock 121 HO motor in the CVO ST's doesnt like the lower rpms unlike the 121 vvt models. The charts are from fuel moto's testing, probably why you feel the motor lugging around 2000 rpm. 121 HO Motor-Stock 121 VVT Motor-Stock
I am not sure I could call 2300 rpm a sweet spot in any build, regardless of the cam installed or the tune!
I would agree, it's closer to what I would call a minimum operating rpm under a load.
Lugging is what? Who knows as everyone has there own opinion. If an engine pulls smoothly at any RPM it's not lugging. A properly tuned HD 121 VVT will smoothly pull from 1200 RPM to redline, been there done that. This is the same argument people have been getting in for years and its never changing, YES bigger camshafts do not like lower RPM as they trade that for higher RPM areas with larger HP numbers. Now most do not ride a HD in the upper RPM area much at all. The typical RPM range used by most HD riders (95%+) is idle to 4000 RPM, with the occasional blast up to 5500 RPM.
This is my sons 121VVT CVO. 4th gear runs. Red is all stock. Orange is with 2.25" Krusher baffles in stock muffler shells, CVOST air cleaner, and SE Tuner. No reported issues with lugging.
The sweet spot for that motor is 2300 rpm or higher. Like someone said, drop down a gear to avoid lugging the motor.
My apologies, when you said lugging at low rpm I automatically assumed you have a CVO ST. I just noticed in your signature you have a VVT CVO. You should not be experiencing any lugging unless you are dropping below 2000 rpm regularly in 1st gear.
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this is the fir stance instance I have heard of 'lugging feeling in 1st gear'
