[Sleepybagger]

125hp /131tq 113 motor w/S&S 635 cams. Running S&S Power Duals w/Rinehart 4".

Torque is to the right, like it flatter and sooner.

Opinions?

 

[MyGlide]

Can't comment on the Thunderheader X as I've not run one, but I have run a zilla before. Ran it on a 117 running 12/1 compression and Wood w68's. Pipe worked well. It's a little loud to some but I thought it sounded good, of course I wasn't behind it. It's pretty much a proven pipe for bigger motors and I don't think you could go wrong with it if that's what you choose.

 

[crossbonesglide]

I would choose the D&D Boarzilla. Thunderheader never looked right to me and has had quality issues and brackets breaking in the past. Both use a 2in primary where as the S&S Power Duals are sized for a smaller motor. A good 2-1 will put the power down low but a good tuner is also needed to complete the package.

 

[RGKen]

I have the Boarzilla on my 120ST and yes it is loud when you get on it but it has a nice rumble when cruising. I have been wanting to quieten it down a bit since I've had it but to be honest I think I am getting used to it and starting to love it (I could just be going deaf :surprise. I do not have the wrapped baffle though so that still might be an option if I really decide I want to change the sound. I had the V&H High Outputs before and they had a nice low rumble so going to the Boarzilla was a big difference. It may just be a paradigm shift for me as far as the sound goes. My friend has a Thunderheader on his SG and I really don't care for the looks or the sound. The X on a 120 may sound better though as he has a stock 103", but still the looks of the D&D is far better than the TH IMO.

 

[Spazz]

I have the 1074X Thunder Header on my 120ST... a lot louder than I thought it would be, but I love it! I can't say much about the Borzilla as I have yet to hear one in person.

The redesign of the 1074X does a lot for the look of the TH as well at tune[ length pipes... more of a straight line as well from the front... Stock on the bottom for comparison.

Quick video of mine for ya...

https://www.youtube.com/watch?v=SKZZjjidBo0

 

[RGKen]

I have the 1074X Thunder Header on my 120ST... a lot louder than I thought it would be, but I love it! I can't say much about the Borzilla as I have yet to hear one in person.

The redesign of the 1074X does a lot for the look of the TH as well at tune[ length pipes... more of a straight line as well from the front... Stock on the bottom for comparison.

Quick video of mine for ya...

https://www.youtube.com/watch?v=SKZZjjidBo0

I have to say that does sound great and I would love to hear it in person. Also sounds like you have a nice throttle response in the tune. No offense but as far as the looks go it does look better than the TH on my friends SG but I'm just not a fan of how the slip-on tapers at the back. But who really cares if it helps the bike run good. :grin:

Great job!

 

[Spazz]

I have to say that does sound great and I would love to hear it in person. Also sounds like you have a nice throttle response in the tune. No offense but as far as the looks go it does look better than the TH on my friends SG but I'm just not a fan of how the slip-on tapers at the back. But who really cares if it helps the bike run good. :grin:

Great job!

Thanks... it does sound MUCH BETTER in person... and the only way to get close is using a headset and listening to it from a PC...

As far as looks go... I hear ya... but that's a TH for ya... I am not a BIG FAN of the look, but you can't complain about the performance you get from it.

The map I got from Jamie at Fuel Moto... FM and Jamie are GREAT to work with and I have the Target Tune Module w/ wideband O2's. Jamie mapped it all for me before he sent it out.

I haven't even messed with it yet since I can't ride ( still on crutches recovering from Knee Surgery on 5 Oct ) I have 11 days left til I can start walking on my own... right in the start of winter, too... sigh.

 

[RGKen]

Thanks... it does sound MUCH BETTER in person... and the only way to get close is using a headset and listening to it from a PC...

As far as looks go... I hear ya... but that's a TH for ya... I am not a BIG FAN of the look, but you can't complain about the performance you get from it.

The map I got from Jamie at Fuel Moto... FM and Jamie are GREAT to work with and I have the Target Tune Module w/ wideband O2's. Jamie mapped it all for me before he sent it out.

I haven't even messed with it yet since I can't ride ( still on crutches recovering from Knee Surgery on 5 Oct ) I have 11 days left til I can start walking on my own... right in the start of winter, too... sigh.

I wish you a speedy recovery and I know it's going to be a long winter waiting to be able to really test that bad boy out. Get well soon!

 

[Sleepybagger]

Regarding asthetics

Can't comment on the Thunderheader X as I've not run one, but I have run a zilla before. Ran it on a 117 running 12/1 compression and Wood w68's. Pipe worked well. It's a little loud to some but I thought it sounded good, of course I wasn't behind it. It's pretty much a proven pipe for bigger motors and I don't think you could go wrong with it if that's what you choose.

The THX is a work of art compared to all other TH's, but that muffler is what it is........and that "is" a true runner.

I'll pick the pipe that creates less noise.........my wife rides on my right wing and we've rode like that for years. I had open Sampson trues on my last bike and she couldn't stand the noise nor could anyone else rolling 75-80mph and when I get on it they'd fall back and refused to ride near me. Going for the sound level and I think the THX is slightly deeper and the finish is 2 cuts above any previous TH to date and now comes with a ghost pipe.

 

[Sleepybagger]

Good thing I ran this by my builder he confirmed my build is a 113" (despite the math by the peanut gallery on another forum).

Thunderheader X 2" primaries are too large for a 113". It is now down to a hideous old style Thunderheader or a D&D Boss Fat Cat.

D&D Boss Fat Cat with wrapped perforated baffles for the most low end and flattest curve.

 

[RGKen]

The Fat Cat with the wrapped baffle is a great sound. Not near as edgy as the Boarzilla. I like the sound of my Boarzilla but I liked the sound of the Fat Cat that was on my last bike better.

 

[Squidlow]

+1 Fatcat

Perforated wrapped is great. Had it on my fatboy. D&D also has great customer service. I hit a big dip on my bike and cracked a bracket. 1 picture in an email and D&D put a new bracket in the mail. Also sounds great with an awesome torque cure.

On this sight people say try the Dragos Dragula 2. 10 year header warranty. Ceramic coated in and out and can change baffle to make better flow flow upgrades.

 

[Sleepybagger]

I talked to D&D and my builder Ron at RC Cycles and both agree the Boss Fat Cat will produce more low end/middle torque whereas the larger primary tube Boarzilla will make bigger numbers/ horsepower, middle/ up top. Like Ron says any 2 into 1 vs a dual set up will give my build "more everywhere".

I'll take the Boss Fat Cat with a ghost pipe.