GT-RX Exhaust Questions on Sound, Setups, etc.

[Poppe]

I was hoping the forum could help me with some questions/thoughts I'm having on an exhaust setup since I'm new to having a nice bike / modifying a bike.

I think I've circled down to two different exhaust setups:

NUMBER 1 Choice Setup

• GT-Rx SS V7 Stubby Mufflers +
  
• GT-Rx V7 SS Headers & H-Pipe +
  
• GT-Rx Fueling Modification / Tune

NUMBER 2 Choice Setup (Almost equal to 1)

• GT-Rx V7 2:1 Full Stainless Underbody/Stubby +
  
• GT-Rx Fueling Modification / Tune

So here are a few questions that I would like answered:

1. Does any body in the SoCal area (yes I'll ride/drive to you) have either of these setups? And if so, can I come stop by and take a listen
2. I'm having trouble listening to hearing the difference on YouTube videos. These are the two I've found online that have these setups. Could someone please help with describing the sound differences if possible? Loudness, deepness, "tingyness" etc?
   
3. I'm going to get the Fuel Modification Tune no matter what exhaust I get. With taking that into account, what are the main differences between the two setups (not counting looks). Advantages over one? Disadvantages?
4. What are the installation processes like for both setups?
   
5. I was going to get a guard plate on the bottom, but will that not be possible anymore if I go with one of these setups?

I'm sure I have more questions, but I can't think of them right now.

Thanks!

Exhaust sounds in question:

Stubby Mufflers -

AND the Underbody 2:1 -

 

[Wisconsin v7 Racer]

I have a 2013 v7 racer with the GuzziTech 2 into1 setup with reflash. I purchased the stubby muffler and also the megaphone muffler. Both sound great and I do use both. Right now I have the megaphone muffler on and I like how it sounds and looks. Installation is very easy. If you have any questions let me know. Hope this helps

 

[Poppe]

I have a 2013 v7 racer with the GuzziTech 2 into1 setup with reflash. I purchased the stubby muffler and also the megaphone muffler. Both sound great and I do use both. Right now I have the megaphone muffler on and I like how it sounds and looks. Installation is very easy. If you have any questions let me know. Hope this helps

Thanks! My big question for the 2 into 1 setup is how does it sound in the top end RPM rang. It's hard to tell from the GuzziTech video, but it almost seems like it falls flat as the RPMs run up. How is it in the deep tones as well? And finally, what is it like on a highway at a constant speed?

I really like the way this sounds at revving when it gets up in the higher rpm range. Maybe the 2:1 sounds pretty similar?

 

[Wisconsin v7 Racer]

It has a nice sound at highway speeds. It's a little louder with the stubby muffler but not annoying loud. Both mufflers produce a nice deep rich sound I think I like the sound of the megaphone muffler better. It sounds much better then the video you posted of the 2 pipes into the stubby mufflers. I know it's a hard decision but I don't regret the setup I have and if I had to choose one muffler I would go with the 2 into 1 with the megaphone. Looks great and has a very nice overall sound around town and at highway speeds.

 

[Trout]

Don't know how much this helps but I have a 2013 Griso with the GT 2 into1 under carriage set up & I couldn't be happier with the looks & sound.

Of course we are talking two way different machines but on acceleration especially getting into the power zone the sound is crisp & clear & anyone listening knows this is a well tuned machine. It quiets down nicely at cruise speed but still has enuf throat to be pleasing & have people standing on the road side give a look to see whats coming.

Personally on the V7 bikes I would prefer the old school dual muffler look but that's just because that is how I remember them.

I never cared for the single sided exhaust of the stock Griso it always seemed "out of balance" to me so I was really glad to see this bike had Todds under carriage system.

 

[GTM®]

Does any body in the SoCal area (yes I'll ride/drive to you) have either of these setups? And if so, can I come stop by and take a listen

I've sold a couple here in L.A. - contact me direct email (Todd at GuzziTech.com) and I'll try to to connect you to one so you can go have a listen. I always say online videos are worthless, yet everyone always wants them. The stubby mufflers are basically no muffler at all, more of a look. The reverse cone meg is an actual muffler.

 

[Poppe]

Don't know how much this helps but I have a 2013 Griso with the GT 2 into1 under carriage set up & I couldn't be happier with the looks & sound.

Of course we are talking two way different machines but on acceleration especially getting into the power zone the sound is crisp & clear & anyone listening knows this is a well tuned machine. It quiets down nicely at cruise speed but still has enuf throat to be pleasing & have people standing on the road side give a look to see whats coming.

Personally on the V7 bikes I would prefer the old school dual muffler look but that's just because that is how I remember them.

I never cared for the single sided exhaust of the stock Griso it always seemed "out of balance" to me so I was really glad to see this bike had Todds under carriage system.

That's actually exactly why I like the dual stubby muffle setup and why it's my number one choice at the moment - I just like the balance of a dual muffler / exhaust look on a V7. I think it really balances out the lines of the bikes.

 

[Poppe]

It has a nice sound at highway speeds. It's a little louder with the stubby muffler but not annoying loud. Both mufflers produce a nice deep rich sound I think I like the sound of the megaphone muffler better. It sounds much better then the video you posted of the 2 pipes into the stubby mufflers. I know it's a hard decision but I don't regret the setup I have and if I had to choose one muffler I would go with the 2 into 1 with the megaphone. Looks great and has a very nice overall sound around town and at highway speeds.

Thanks! Really appreciate the thoughts.

I've sold a couple here in L.A. - contact me direct email (Todd at GuzziTech.com) and I'll try to to connect you to one so you can go have a listen. I always say online videos are worthless, yet everyone always wants them. The stubby mufflers are basically no muffler at all, more of a look. The reverse cone meg is an actual muffler.

I completely agree with the video! But also, with so many great options it's such a hard decision. I'll email you as I think that would help me out a lot. I personally like the look of the dual stubby muffler setup the best - 2:1 has never been my thing, but if the sound is much better then I'll go with that.

Thanks!

 

[Wisconsin v7 Racer]

Thanks! Really appreciate the thoughts.



I completely agree with the video! But also, with so many great options it's such a hard decision. I'll email you as I think that would help me out a lot. I personally like the look of the dual stubby muffler setup the best - 2:1 has never been my thing, but if the sound is much better then I'll go with that.

Thanks!

I think you would be happier with the sound of the megaphone muffler instead of the stubby and you can still have dual pipes you don't have to have the 2 into 1.

 

[Wisconsin v7 Racer]

https://www.guzzitech.com/store/category/exhaust/v7-small-block/

 

[Gruzzer]

Thanks! Really appreciate the thoughts.



I completely agree with the video! But also, with so many great options it's such a hard decision. I'll email you as I think that would help me out a lot. I personally like the look of the dual stubby muffler setup the best - 2:1 has never been my thing, but if the sound is much better then I'll go with that.

Thanks!

I am in LA and have the GT-Rx 2-2 Setup <https://www.guzzitech.com/store/product/gt-rx-v7-full-ss-2-2/> if you want to give it a listen just let me know and we can figure something out.

 

[Poppe]

I am in LA and have the GT-Rx 2-2 Setup <https://www.guzzitech.com/store/product/gt-rx-v7-full-ss-2-2/> if you want to give it a listen just let me know and we can figure something out.

That would be wonderful. I'll private message you to talk details.

 

[Poppe]

I am in LA and have the GT-Rx 2-2 Setup <https://www.guzzitech.com/store/product/gt-rx-v7-full-ss-2-2/> if you want to give it a listen just let me know and we can figure something out.

Hey, I forgot what exhaust you had on before the 2:2, was it Mistral pipes? And what was your reasoning for taking them off?

 

[Gruzzer]

Previous to my current setup I had stock headers with Mistral Reverse Cones (a gift received for my first Guzzi , a 2010 Classic). A Prius took me out / bike was "totaled" (right side Mistral and Headers beyond repair) so on went the full GT-Rx system.

If the crash didn't happen I most likely would have stuck with the Mistrals and upgraded to the SS Headers.

If I didn't already have the MIstrals I would have gone with what I have now.

 

[Poppe]

Previous to my current setup I had stock headers with Mistral Reverse Cones (a gift received for my first Guzzi , a 2010 Classic). A Prius took me out / bike was "totaled" (right side Mistral and Headers beyond repair) so on went the full GT-Rx system.

If the crash didn't happen I most likely would have stuck with the Mistrals and upgraded to the SS Headers.

If I didn't already have the MIstrals I would have gone with what I have now.

Oh copy that. I rode with a guy that had mistrals with the DB removed and they sounded pretty damn good, but I wish they were just a hair louder. I can't remember if your full system is louder than the full system from the mistral, but I think it was? I definitely like the way yours looks a lot better.

 

[Gruzzer]

I think both are fairly similar on the "loud" front. The Mistrals maybe a bit more low end and Todd's have an angrier sound / snarl to them.

 

[Poppe]

I think both are fairly similar on the "loud" front. The Mistrals maybe a bit more low end and Todd's have an angrier sound / snarl to them.

Ha nice. That's good to know. Thanks!

 

[Stradagene]

I think both are fairly similar on the "loud" front. The Mistrals maybe a bit more low end and Todd's have an angrier sound / snarl to them.

That's a good way of describing the difference.
I agree that the Guzzi-Tech 2>1 set-up on my bike has a snarl to it!

 

[Poppe]

That's a good way of describing the difference.
I agree that the Guzzi-Tech 2>1 set-up on my bike has a snarl to it!

I look forward to hearing yours. I imagine all the work done, like Gruzzer's, your bike has to sound insane.

 

[GTM®]

Sound and personal preferences are in line with feel when it comes to talking about power. I care about not having too loud of exhaust systems, but I care most about power, which nearly none of the other companies that sell exhaust systems talk about or will post power graphs. Yes my systems are much louder than stock. The power backs the sound. They are in no way as loud as most Harleys I experience daily, unless we're talking about the stubby mufflers on my system (as I've repetitively stated are basically no mufflers at all). The exhaust velocities on the Quattrovalvole motor are stupendous, and as such have a much louder sound volume at the end of the exhaust.

As to power "feel"... below is a graph of a stock older 1100 motor, and post mods by me. Almost always people would say, "so why does it seem my motor lost the upper RPM pull? It seems slower now." Well, because the torque curve is now MUCH higher, and there are no dips in the power curves like stock. Feel is deceptive. Much the same as with the V7 motor as shown on the other graphs in this section.

I also put my systems up against all others for longevity with a lifetime warranty against cracking and workmanship.