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M8 cams EPA compliant?

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Old Aug 30, 2021 | 06:23 PM
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Default M8 cams EPA compliant?

I've got a 21 EGS with the 107 engine, currently have the SE 447 cam installed but I'm getting a dyno tune this weekend and my tuner suggested I might want to think about using the TTS 100 cam I have sitting on my shelf. Said he's heard that the SE cams are ground to be EPA compliant, having never dealt with EPA nonsense in any of my past builds I found this odd. My question is, do you think it's worth the time/money to swap out the cams or is the SE cam "almost as good"?
I'm not chasing numbers just looking for the best all around tune possible. I don't mind shelling out the $$ but if the consensus is that it's wasted money then I'll keep the SE cam.

thanks
 

Last edited by luckiestiff; Aug 30, 2021 at 06:30 PM.
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Old Aug 30, 2021 | 08:02 PM
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I'm waiting on a TTS 100 cam that I just bought from IMZZ Elite. You can go to the mastertune website and they have Dynos comparing the TTS 100 cam to the SE cam. Also there's a thread on here comparing several different cams that Steve Cole and $tonecold did that I thought was really great.

https://www.hdforums.com/forum/milwa...m-testing.html

I don't know if it's worth it to change cams to you. If you're doing your own install it'd be a pretty simple swap. If you're having someone do it you're gonna pay for it lol. From what I know the TTS 100 is an easier cam to tune relatively speaking. Have you used the TTS 100 at all or do you just have one?
 
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Old Aug 30, 2021 | 08:50 PM
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I can’t give you information on the comparison, but I decided on going with the TTS 100 on my ‘19 CVO Limited and should be receiving it in the next day or two. It looks like a great choice for bottom end through normal riding ranges, and I’m looking forward to putting it in.

I thought the EPA references were mostly related to using the SE canned tunes? I know that the 447 is a pretty mild cam based on the specs, but I don’t think the EPA mandates the specific tolerances for lift, duration and timing, do they?

IMHO, if you’re going through the expense of having it dyno tuned, I’d do the cam swap as I’d expect you’ll get much better results.
 
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Old Aug 30, 2021 | 08:58 PM
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Originally Posted by luckiestiff
I've got a 21 EGS with the 107 engine, currently have the SE 447 cam installed but I'm getting a dyno tune this weekend and my tuner suggested I might want to think about using the TTS 100 cam I have sitting on my shelf. Said he's heard that the SE cams are ground to be EPA compliant, having never dealt with EPA nonsense in any of my past builds I found this odd. My question is, do you think it's worth the time/money to swap out the cams or is the SE cam "almost as good"?
I'm not chasing numbers just looking for the best all around tune possible. I don't mind shelling out the $$ but if the consensus is that it's wasted money then I'll keep the SE cam.

thanks
That TTS 100, or a Red Shift 468 would put a big smile on your face, IF you move to a PowerVision or TTS tuner. This is by far the biggest bang for your buck mod you can do to the M8. If you stay with the EPA cam, and tuner, you are always going to fall short, and it will always feel underwhelming when compared to the aftermarket cam and tuner.

Ditch the SE stuff. Go aftermarket. That TTS 100 is super rider-friendly, with gobs of torque. You just need to couple it with the right tuner.
 
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Old Aug 31, 2021 | 05:00 AM
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Thanks for the replies, sounds like y'all confirmed what my tuner said and I kind of knew. I had the TTS cam in my 20 EGS with the TTS tuner and I loved it. Going with Techno Research tuning this time. Looks like I've got a cam to change...
 
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Old Sep 1, 2021 | 08:41 PM
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The SE8-447 torque can with a good tune (not a Screamin Eagle tuner) is a fairly good cam. It will never be a TTS100 etc, but you can improve it with a good tune.

Paul
 
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Old Sep 1, 2021 | 09:04 PM
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You didn't share with us the most important question: Do you care if the bike, once the new cam is installed and the bike is tuned, is or isn't EPA-compliant? That makes a big difference in the responses.

Every SE cam, when tuned with the SE tuner, will be EPA compliant.
Every SE cam, if tuned with a non-SE tuner module, will most probably get your factory warranty canceled if your dealer finds out about it.
Any non-SE cam cannot be made compliant with the SE tuner, and any non-SE cam cannot be made EPA-compliant when tuned with an aftermarket tuner module.

A well-designed aftermarket cam, plus an aftermarket tuner module, with the bike dyno-tuned by a qualified professional tuner, will make WAY more power than any EPA-compliant cam and tune. WAY.

But, if your bike is still under the factory warranty, well...now it isn't.

So, if keeping your factory warranty intact for the full 24 months is important to you, then stay SE all the way.
If you want both your warranty and performance, wait 24 months and then go aftermarket.
If performance is more important to you than your factory warranty then go aftermarket now.
If "good enough" performance is good enough, then go SE.

It all boils down to what are the most important things to you: Protecting your 24 month factory warrant, performance, not having to wait 'til the warranty expires, or some combination.

Ain't never simple, is it.
 
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