So I’m sure you must’ve ridden tuned twin cams before Stonecold.
Is your bike with the 22x cam as smooth? I’m talking around 2400-3000 in 1st, 2nd, 3rd gears. One multi tuned bike I had went thru 4 comps in 3 seasons because of around town helmet rocking, surging.
I don’t want to take a step back in rideability to net more power.
I’m stressing haha.
My bike has the RS468 in it, not the 22x. It seems very smooth to me, there is no surging. My 2015 RGS with the 117" in it is also smooth after being tuned at Fulsac. The things that determine this I think are having the right components that work together and having a tuner that knows his business. Steve at Fulsac said he wouldn't tune my bike with the mufflers I had on it because he wouldn't be able to get the low end right. I would rather have someone tell me this right up front than go ahead and do a tune that I'm not satisfied with. That is what the first tuner that tuned it did. So it's not just the cams that cause the surging, it can be a combinations of things.
My bike has the RS468 in it, not the 22x. It seems very smooth to me, there is no surging. My 2015 RGS with the 117" in it is also smooth after being tuned at Fulsac. The things that determine this I think are having the right components that work together and having a tuner that knows his business. Steve at Fulsac said he wouldn't tune my bike with the mufflers I had on it because he wouldn't be able to get the low end right. I would rather have someone tell me this right up front than go ahead and do a tune that I'm not satisfied with. That is what the first tuner that tuned it did. So it's not just the cams that cause the surging, it can be a combinations of things.
Yes for sure I agree it is a combination that works in harmony.
Maybe HD actually knows what they are doing with proven Stage 1 components and their SEPST map they loaded into my bike before delivery.
Like I said I’d hate to cam it up and have it run like my last bikes did.
And my last bikes had what I thought were pretty good exhaust systems, everything from Fullsac 2” cores and their DX pipe, to stock decat and Mellows etc. All sounded good but part throttle surging that nobody could obviously figure out.
My bike has the RS468 in it, not the 22x. It seems very smooth to me, there is no surging. My 2015 RGS with the 117" in it is also smooth after being tuned at Fulsac. The things that determine this I think are having the right components that work together and having a tuner that knows his business. Steve at Fulsac said he wouldn't tune my bike with the mufflers I had on it because he wouldn't be able to get the low end right. I would rather have someone tell me this right up front than go ahead and do a tune that I'm not satisfied with. That is what the first tuner that tuned it did. So it's not just the cams that cause the surging, it can be a combinations of things.
I guess you’re asking about the 2015 RGS. It’s a 117”, 10.9:1 compression, Drago 600 cams which are similar to GMR’s 600 & T-Mann’s 590 cams, Dragos 2.8 Diablo heads, HPI 58 tb, Fullsac X header, Crusher Mellow mufflers, V&H V02 Rogue AC. By no means do I consider this the perfect combination. When Steve at Fullsac tuned it, the tuning took 4 hrs, so it wasn’t easy. He showed me a dyno sheet of a 107 TC that he said tuned pretty easily and made good power. It had a TTS 150 and Harley’s CNC heads. Came up quickly on torque and had a fairly flat torque curve. He still did a great job on my bike and I am satisfied with the way it runs. Says a lot for his skill as a tuner.
I guess you’re asking about the 2015 RGS. It’s a 117”, 10.9:1 compression, Drago 600 cams which are similar to GMR’s 600 & T-Mann’s 590 cams, Dragos 2.8 Diablo heads, HPI 58 tb, Fullsac X header, Crusher Mellow mufflers, V&H V02 Rogue AC. By no means do I consider this the perfect combination. When Steve at Fullsac tuned it, the tuning took 4 hrs, so it wasn’t easy. He showed me a dyno sheet of a 107 TC that he said tuned pretty easily and made good power. It had a TTS 150 and Harley’s CNC heads. Came up quickly on torque and had a fairly flat torque curve. He still did a great job on my bike and I am satisfied with the way it runs. Says a lot for his skill as a tuner.
If you are running crusher mellows you really need a cam with more exhaust duration.. Something like a SnS585 would work well. Bet the motor would run better with free flowing (louder) mufflers..
If you are running crusher mellows you really need a cam with more exhaust duration.. Something like a SnS585 would work well. Bet the motor would run better with free flowing (louder) mufflers..
Here’s the cam that’s in it. I think the duration is pretty long, although I have told Frank the numbers don’t add up. Is it 249 int duration and 247 exh duration or are they both 253 and he’s not disclosing the correct open and close? Anyway, Steve said the large overlap made low rpm tuning difficult.
The first time I had it tuned it had DNT’s on it, pretty free flowing and the tune was crap.
Here’s the cam that’s in it. I think the duration is pretty long, although I have told Frank the numbers don’t add up. Is it 249 int duration and 247 exh duration or are they both 253 and he’s not disclosing the correct open and close? Anyway, Steve said the large overlap made low rpm tuning difficult.
The first time I had it tuned it had DNT’s on it, pretty free flowing and the tune was crap.
About the same cam, Exhaust opens earlier. Little less overlap..
Hey Max, the bike is tuned and I’m happy with the way it performs. Below is the dyno sheet. The attached PDF is the first tune with the DNT’s. The bike ran like crap. I think some tuners concentrate on the wot numbers and forget that for most of us wot is an infinitesimal percentage of our riding time. When Steve Cole was tuning for our cam testing he went through every throttle setting and adjusted every tuning block in the map. That’s the way a tune should be done. I’m sure Steve at Fullsac did this also.
11-09-2018, 03:30 PM
