Has anyone with a '15 or '16 110" CVO Stage II (w/SE-585 cam) upgraded their intake to this 58mm Throttle Body? If so, I'd appreciate your evaluation.

As the SE-585 cam is designed for low rpm torque, I was advised I could retain my stock valve springs if not seeking high rpm performance. Was very pleased with the increased low rpm torque the 585-cam provided, but very disappointed at performance over 3000 rpm, as in passing at 70 mph+ (expected just a bit more). I have the SE High Flow Exhaust System with 4.5" Street Cannons, so don't think back pressure breathing is an issue. Tuning is via Fuel Moto Dynojet Power Vision Tuner & Wide-Band Target Tune.

Questions: Wondering if 3k-5k rpm extra breathing provided by the 58mm TB would be meaningful considering the low rpm torque SE-585 cam? Also, what size TB comes stock with the '15/'15 110" CVO motor?

 

Your stock throttle body isn't likely the choke point for power. The throttle body is a 50mm and going to a 58mm will add a few hp on the top end with no other mods. That's why upgrades should be done as a package. Do heads, larger throttle and a cam that will utilize the extra flow potential ,then you'll see a gain up top. Throw in a big bore and there will be more power everywhere. You could swap cams and get more top end but you'll sacrifice it down low...can't have it all. The 110 is low on compression to start with so cam options aren't many that will help more than hurt. Bump compression and it opens a lot of options.

 

Your stock 50mm is good for around 115hp. With the stock heads and smallish cams, you won’t reach that and a 58 would be a waste of money. If it were mine I would remove the cats from those mufflers, tune and see how you like it. I’m running a 107 with 110 heads, with the nightstick version of the same pipe, with cats removed. It pulls hard mid-upper range with excellent drivability down low. It’s good for 130+ horsepower

 

Agree with the previous posts but am thinking "passing at 70mph+" could be improved with a down shift.

 

No need. You want a fast bike buy one. You want to just ride buy a harley. Prefer the later.

 

Duhhhhhh LOL. That also means higher rpm's where I'm not getting the push I'm looking for.

 

Appreciate your thoughts! What cam are you running?
As to removing the cats, I love the current sound. Is the cat removal reversible? We enjoy 4k-5k mile road trips regularly and I'm concerned removing the cats might be too hard on our ears. Had your nightstick setup for a while (but w/cats) but later preferred the more mellow sound with 4.5" Street Cannons. Performance was about the same.

 

I had a 2014 CVO Limited with the SE 117 kit on it, but used the SE585 instead of the 259E cam that came with the kit. The displacement upgrade came with the 58mm throttle body and bigger injectors. Had a Fullsac header and 2.25 cores in the stock mufflers. Low end torque was great, and had fun getting on freeways. But the top end power is soft because of the cam. If you want more power on top, most likely you are going to have to give up some of the bottom end. I enjoyed it and rode the heck out of it.

 

Is the cat removal reversible?

The cat "has an internal honeycomb structure covered in a thin coating of tiny particles of the metals Platinum, palladium and rhodium".
YouTube cat removal videos show the use if spade bits, crow bars, hammer and chisel, etc to remove the material.
I seriously doubt you will be able to reassemble the chunks and dust into its original structure.

 

You can’t have your cake and eat it too

Pick a cam and you pick the power band it gives you. A compromise is a good midrange cam that’s not gonna be great down low or up top but not too bad either. TTS 150

The low compression in the cvo 110ci engine limits your options as a bigger cam is gonna feel soft down low without decent compression. Inversely a smaller cam for torque down low is gonna run out of puff up top.

If you want more power everywhere, you need more displacement and/ or higher compression (with the right cam)

Removing the cat is a reasonably messy job so I wouldn’t plan on keeping it for reassembly. You’d have to cut out a big section to retain its structure. Removing it won’t add too much noise. Slip on mufflers control the sound more.