V100 Exhaust Thread

[GTM®]

Ago has just showed off its slip-on muffler, links to purchase below. As soon as we can get our hands on a V100M, we'll be working on both a cat-elim and fueling solution.

Agostini V100 SS Muffler

Agostini V100 Slip-on Muffler Laser-etched Agostini Mandello Slip-on mufflers. Constructed of high quality steel, with carbon-fiber end cap. much lighter than stock mufflers. Removable DB-killer. E5 approved. We are at work on developing a fueling solution. These are not stocked, please order...

gtmotocycles.com

Agostini V100 Dark Muffler

Agostini V100 Slip-on Dark Muffler Laser-etched Agostini Mandello Slip-on mufflers. Constructed of high quality steel, with carbon-fiber end cap. much lighter than stock mufflers. Removable DB-killer. E5 approved. Though claimed to work on stock fueling, we highly recommend the UpMap device...

gtmotocycles.com

 

[GTM®]

A cat-elim and map will make the difference for an Ago or Mistral.

I can promise you a fueling fix on a bone stock bike will give tremendous results. The slip-on is almost purely cosmetic. The real guts lie in that heat box under the trans.

 

[GTM®]

TBH nothing beats the stock exhaust till now. The best looking is probably Mistral (picture below ;-) ), then Agostini and the last in my eyes is Arrow. But every aftermarket exhaust is too long and too high and each of them totaly fails in a part, where muffler connects to the catalytic convertor. Only stock solution is pretty. I am looking forward to seeing Akrapovic evntually and highest hopes are for Zard. But at he moment I think I will stick with the stock exhaust. ;-)

Man, Mistral knocked it out of the park: +1hp increase, and 2.2 lbs lighter for $600. I’d stay stock too with those numbers. Sorry, I find the muffler ugly. Only cool(ish not included) option is their db-killer with the eagle… Kind of a shame to roast and blow soot all over the poor thing though.
All said, GTM is also both a Mistral & Zard dealer, but everyone sells them online, so we’ll not get involved in cheap pricing wars, along with the others available in that price range. You get what you pay for. Be sure to click on the STORE tab above and read the scrolling paragraphs above.

 

[GTM®]

GTM is a Zard dealer. We can offer the one shown below (with a dyno results) for the non-homologated (Race) version. If any interest, I can put one on the (GTM) STORE tab above. ~$699 or so.
That said, I'm sure anyone interested is already Googling to see where they can get it elsewhere cheaper.

 

[GTM®]

I also have a LV muffler like shown below on the shelf for anyone local that would like to try it custom fitted. They do not make it for the V100. The connector pipe is custom.

 

[allenpeter]

GTM is a Zard dealer. We can offer the one shown below (shown with a dyno chart) for the non-homologated (Race) version. If any interest, I can put one on the (GTM) STORE tab above. ~$699 or so.
That said, I'm sure anyone interested is already Googling to see where they can get it elsewhere cheaper.

View attachment 30009

View attachment 30008

So what does this graph show ?

 

[Raven]

So what does this graph show ?

An increase of 4.7 HP and a small increase in torque.

 

[Alphie]

My birthday is this month, so I bought the MIVV Cat Delete M.015.C1 which are currently going for $450. The Augustini Big-Bore Headers are still north of $700, so I went with the MIVV instead. The MIVV is stainless steel and looks good from the photos. I will post pictures when it arrives and any pros/cons. Riding this past summer in Atlanta, GA, my feet were burning at the stop lights, and the heat went right past my boots, under my pants and burned my shins. Saw some YT videos of guys who bought the Big-Bores and they said it got rid of all that heat, which sits below the oil pan... BRILLIANT! Let's face it; cats suck the life out of any engine. So, happy birthday to me, I guess?

[EDIT] I plan on using it with the stock silencer; I just can't justify spending upwards of $600+ on a new can. The word is that you don't have to remap with either Big-Bore or MIVV if you use the stock can, but if I start getting codes, I will invest in an upmap.

 

[GTM®]

Guys, this is NOT an ignorant social media website. It has been here for ~24 years giving accurate data and facts. Donations to this site and purchases on the (GTM) STORE at the top of every page help support it. It may be coming to an end if this direction continues.
My power data on the Mandello;

Thread 'Mandello Performance Thread'

Oct 16, 2024

Finally got our friend Mike’s Mandello S on the dyno. Power graphs below.

FULL THROTTLE RUN
OEM stock: 100.6 hp (red trace) & 65 lb/ft. (blue trace)
Ago FS WITH db-killer & UpMap (full race system U.S. map): 98.7 hp (orange trace) & 64.3 lb/ft (green trace) - Sacrifices top end power with db-killer for filling in of mid RPM dip. We ended up doing a run without the db-killer (11.4.24), result was ~115 hp. I will post the dyno graphs when I can.



40% THROTTLE RUN
OEM stock: 66 hp (orange trace) & 54 lb/ft. (green trace)
Ago FS WITH...

• GTM®
• decibels dymo moto guzzi v100 sound
• Replies: 10
• Forum: V100 Mandello

• 

 

[Alphie]

Looking forward to seeing pics of your new headers. Let us know your experience with them. I believe the general consensus is you will need a new map.

I put the MIVV cat delete pipes on over the weekend using the stock can and also upmap'd with the cat delete/stock can tune.



I've noticed substantial torque gains, cooler running temps and my guzzi growls now when letting off the throttle, which of course brings a huge smile to my face. It is louder than stock, but not obnoxious, which is what I was expecting.

It's the best upgrade I've done so far. I put the stock heat shields back on as well, not pictured. I highly recommend this if that is what you are looking for in your bike. I don't have access to a dyno, but I would expect it is what @GTM® describes above.

 

[MGrego]

Very Nice -- The increase in power is great, but I'm considering doing this just for the heat reduction ! As you get a few more miles on let us know how your MPG is affected. Good to know the stock heat shields can go back on with this system.