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Discussion Starter · #1 ·
I picked up a set of Stage 3 NA Jones Cams with the upgraded Valve springs and had them installed at the local HD. At the time, I also installed the 58MM Throttle body, Akrapovic exhaust (Custom welded into my TAB slip on muffler) and a Motohooligan Intake and a new set of spark plugs. They tuned the bike with the SE Tuner. I have the Fitzgerald 26T pulley and the bike put down 119 HP at the wheel.

I was expecting the HP to be in the 130's. I'm thinking of taking it to another dealer here in Ohio that races their Destroyer regularly (I didn't know about them racing prior to taking my bike to my local HD which I was told had a V-rod guy there who had a couple Destroyers that he raced. It's obvious that the parts guy either lied, or that guy left prior to me getting everything to have installed on my bike. )

I know that pre-cams, the bike lost 2 HP on the dyno with the pulley swap, but even at 121-122 HP (taking into account for the HP loss with the 26T pulley) could a tune really be worth 10+ HP?

Possible I have the wrong CAMS? Or the CAMS were installed wrong? I know more on the car side, and have degreed in CAMS before, but can you not degree in a CAM on a bike?

Pulls like mad from 5K to 9K and made peak HP at 9K rpm.

I'm planning on swapping back to the 28T pulley, but I'm trying to figure out why this bike didn't make that much more HP after all this work into it.

Bike has 17K miles on it and no other running issues.

Anyone have experience with something like this where a tune could make that much of a difference?
 

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With cams, a good dyno tune is everything. You're undoubtedly ~10hp low. I'm sure some other guys will jump in here, but I'd take it to the other dealer. If they race Destroyers and are anything like the Vreeland's (V-Rod Gods) here in PA, they'll get you straightened out.
 

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I picked up a set of Stage 3 NA Jones Cams with the upgraded Valve springs and had them installed at the local HD. At the time, I also installed the 58MM Throttle body, Akrapovic exhaust (Custom welded into my TAB slip on muffler) and a Motohooligan Intake and a new set of spark plugs. They tuned the bike with the SE Tuner. I have the Fitzgerald 26T pulley and the bike put down 119 HP at the wheel.

I was expecting the HP to be in the 130's. I'm thinking of taking it to another dealer here in Ohio that races their Destroyer regularly (I didn't know about them racing prior to taking my bike to my local HD which I was told had a V-rod guy there who had a couple Destroyers that he raced. It's obvious that the parts guy either lied, or that guy left prior to me getting everything to have installed on my bike. )

I know that pre-cams, the bike lost 2 HP on the dyno with the pulley swap, but even at 121-122 HP (taking into account for the HP loss with the 26T pulley) could a tune really be worth 10+ HP?

Possible I have the wrong CAMS? Or the CAMS were installed wrong? I know more on the car side, and have degreed in CAMS before, but can you not degree in a CAM on a bike?

Pulls like mad from 5K to 9K and made peak HP at 9K rpm.

I'm planning on swapping back to the 28T pulley, but I'm trying to figure out why this bike didn't make that much more HP after all this work into it.

Bike has 17K miles on it and no other running issues.

Anyone have experience with something like this where a tune could make that much of a difference?

Did you mean stage 2 not 3? Stage 3 requires a bit more engine work to be applicable.
 

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Discussion Starter · #4 ·
With cams, a good dyno tune is everything. You're undoubtedly ~10hp low. I'm sure some other guys will jump in here, but I'd take it to the other dealer. If they race Destroyers and are anything like the Vreeland's (V-Rod Gods) here in PA, they'll get you straightened out.

That's the plan in the long run I think. They promote some good wins on their website, and I was able to talk to their tuner. The original dealer wants a chance to fix it, so it is there for now as mainly they have to fix some other small issues they needed to fix from their first mistakes. We'll see what they come up with, but all signs are pointing that the cam was not indexed correctly. We'll see what they come up with and if they can get it fixed....however I may take it to the other dealer afterwards to have it double checked.
 
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