• Ciao Guest - You’ve landed at the ultimate Guzzi site. NEW FORUM REGISTRATIONS REQUIRE EMAIL ACTIVATION - CHECK YOUR SPAM FOLDER - Use the CONTACT above if you need help. New to the forum? For all new members, we require ONE post in the Introductions section at the bottom, in order to post in most of the other sections. ALWAYS TRY A SEARCH BEFORE STARTING A NEW TOPIC - Most questions you may have, have likely been already answered. DON'T BE A DRIVE-BY POSTER: As a common courtesy, check back in and reply within 24 hours, or your post will be deleted. Note there's decades of heavily experienced Guzzi professionals on this site, all whom happily give endless amounts of their VALUABLE time for free; BE COURTEOUS AND RESPECTFUL!
  • Be sure to see the GTM STORE link also above for our 700+ product inventory, including OEM parts and many of our 100% Made-in-SoCal-USA GTM products and engine kits. In SoCal? Click the SERVICE tab above for the best in service, tires, tuning and installation of our products or custom work, and don't miss our GT MotoCycles® (not) art on the BUILDS tab above. WE'RE HERE ONLINE ONLY - NO PHONE CALLS MADE OR RECEIVED - DO NOT EMAIL AND ASK QUESTIONS OR ASK TO CALL YOU.
  • There is ZERO tolerance on personal attacks and ANY HYPERLINKS to PRODUCT(S) or other competing website(s), including personal pages, social media or other Forums. This ALSO INCLUDES ECU DIAGnostic software, questions and mapping. We work very hard to offer commercially supported products and to keep info relevant here. First offense is a note, second is a warning, third time will get you banned from the site. We don't have the time to chase repeat (and ignorant) offenders. This is NOT a social media platform; It's an ad-free, privately funded website, in small help with user donations. Be sure to see the GTM STORE link above; ALL product purchases help support the site, or you can upgrade your Forum profile or DONATE via the link above.

GuzziTech GTM modded Cal 14 Dyno vs. Stock

kiwi dave said:
How did you measure your mpg, from the dashboard? Remember, the dashboard only knows what the ECU is telling it, and is unaware of the changes the power commander is making. If you note your fuel quantity when refilling and the mileage since the last refill, you can calculate the true mpg. The results may not be so wonderful; I was fooled by this for a while too, until I thought it through.

Notwithstanding my comments, I agree the GT-Rx fueling package is very impressive.
Click to expand...

I will measure it the old fashioned way as well. I had my suspicions also.

But, the overall results are tremendous.
 
Yes, use the gallons used to miles ridden method. As Dave says, the dashboard # is based on OEM fueling. I think you'll find you are getting much better then stock. All of my 8V's get high 30's in the Winter, to mid 40's in the Summer.
 
Went for a long ride yesterday in 23°C (73.4°F) temperature, spirited ride with lots of corners and gear changing.

Upon refill, dashboard indicated 5.1 litres per 100k (47.0 mpg (US), 56.5 mpg (UK)).

Tank took 9 litres for 160 Km, actual fuel consumption of 5.6 litres per 100k (42.0 mpg (US), 50.4 mpg (UK)).

Bike has the full GTM fueling package, and GTM exhaust system. I'm very comfortable with these figures.
 
With Todds very detailed instructions and photographs to guide us every step of the way, my son and I installed the BMC air filter, the GTM fuel management package, and re-flashed the ECU about 1,500 miles ago.

The difference in performance, throttle response and overall smooth running, of an already smooth running bike, was amazing.

About 1,200 miles ago I took advantage of a GTM special offer on SS Zard shorty mufflers.

Between the visceral response to the deep throated exhaust note and the extra kick in the rear at each spirited roll of the throttle between, about, 3k and the soft rev limit / red line, the riding experience changed yet again. It is even more fun to ride my Cali Custom now.

IMO the GTM fuel mod / ECU re-flash package, and less restrictive mufflers, are by far the best upgrades I've ever made to any bike.

My hat is off to Todd.

It can't be easy, quick or cheap to find the right parts and partners. AND once the parts are identified and partners wooed there must be countless hours in testing, changing, and retesting maps, routing wires, installing modules etc. just to unleash the beast in these engines.

:clap: :clap: :clap:
 
Skipper said:
Hi Todd, there is a dyno available just down the road from my mechanic, so as soon as my new parts are received and fitted, I'll head down there.
I'll also report back in detail
on-road impressions. Looking forward to arrival.
Click to expand...
Hi Skipper. Did you ever get your bike on that dyno? I would like to know what the readings were.
 
Put my bike on the Dyno. The numbers look high but it certainly feels impressive. This is the results: 105hp..102 torque.

IMG_4098.webp

IMG_4101.webp
 
I hadn’t dyno’ed the full short system yet, but I’m not surprised. Beautiful lines. So 25 hp & 27 lb.ft. of torque gain over stock! GTM delivers again. ;)
Stock is 80hp/75 ft lbs, so significant increases. Full long system was just under 100 hp/96 ft lbs; https://www.guzzitech.com/forums/threads/guzzitech-gtm-modded-cal-14-dyno-vs-stock.13773/

p.s. It usually takes ~3 runs to see max power on the dyno.

Nothing else to add but enjoy! Thanks for posting.
 
GT-Rx® said:
I hadn’t dyno’ed the full short system yet, but I’m not surprised. Beautiful lines.
The 8V motor loves short exhaust systems as you’ll continually see me say. GTM delivers again. ;)
Stock is 80hp/75 ft lbs, so significant increases. Full long system was just under 100 hp/96 ft lbs; https://www.guzzitech.com/forums/threads/guzzitech-gtm-modded-cal-14-dyno-vs-stock.13773/

p.s. It usually takes ~3 runs to see max power on the dyno.

Nothing else to add but enjoy! Thanks for posting.
Click to expand...

Great Job, Todd!..and Thanks!
 
GT-Rx® said:
I hadn’t dyno’ed the full short system yet, but I’m not surprised. Beautiful lines. So 25 hp & 27 lb.ft. of torque gain over stock! GTM delivers again. ;)
Stock is 80hp/75 ft lbs, so significant increases. Full long system was just under 100 hp/96 ft lbs; https://www.guzzitech.com/forums/threads/guzzitech-gtm-modded-cal-14-dyno-vs-stock.13773/

p.s. It usually takes ~3 runs to see max power on the dyno.

Nothing else to add but enjoy! Thanks for posting.
Click to expand...
The Moto Guzzi specs state 96 HP and 87lbs of torque. Why the difference?
 
Sure glad I found this site. Great stuff here as I try to figure out how to proceed with performance and fuel issues. I’m real tempted to risk dee-vorce as I announce to my bride that I wanta spend nearly $3500 on exhaust and fueling improvements for the Eldorado I haven’t even picked up yet. She won’t care that that full exhaust appears to be a work of art and at a genuinely reasonable price, nor will she care about a performance improvement, especially since I just did an expensive one on my Husky 901. But wow at the diff on that bike! It was Rottweilers full package. Its performance now rivals my Griso. So maybe the best marriage saving answer for now is the PC6 and tool kit from GTM and slip-ons, and just wait for the H-pipe to crack. AF1 in Austin has recommended the Agostini slip-on over the Mistral. Any comments? Could I use that Agostini with the GTM H-pipe when I do buy it and the header?
 
Didn’t mean to offend by mentioning ‘you know who’ in Austin, but being a newby to MG, and living here in Tejas, the only MG gurus that I knew of were those guys in Austin and Mike Haven’s MPH Cycles in Houston. It’s pretty much a MG desert here. Unless I’ve forgotten making contact with GTM and this site before, I only stumbled upon this forum yesterday. It’s possible I forgot - lots of combat damage to this old man. As for the mods I’m interested in, $3500 is significant for a retired military guy that just shelled out $8k for a used bike and TTL. Not knowing GTM from Adam, I gotta ask questions and compare to the little bit that I’ve learned. I think you’ve convinced me though that you’ve a high quality product and likely the best method for performance improvement. I didn’t see the Ago silencer on your site. It would stand to reason you sell them, but I didn’t see it. Your comment about the rivets and thin metal makes sense though. I’ve seen that before. But thanks for the help. Things are coming more into focus. Pretty sure I oughta get the full exhaust and PC6 ‘kit’.
 
GTM® said:
Sorry, no, product mentions here are all good of course . Repetitve mention of dealers, easily found via Google, etc, are exhausting. I sell Agostini. Mention of the Austin dealer simply takes business away. They are big. I am tiny, and have to fight for every $. I’d like to get a count on how many times GTM is linked on their Forum.
I guess I can solicit ads from them to promote them all here, and step away from making products.
Like I’ve mentioned, maybe time to pull the plug and move on completely.
Click to expand...
I am so sorry I got all this started. I misunderstood that this forum was linked to your company Todd, and I misunderstood the purpose and rules of the forum. So my bad and I apologize. But for what it’s worth Todd, in 24 hours using your forum, I have a much better understanding of how to do what I was otherwise trying to figure out. The forum has been invaluable in that short time, and it seems you are providing a service, products and advice that I haven’t gotten and aren’t available from my sources. I understand that running a business is hellish, but from what my limited experience tells me, you have a niche. But I’m sure it’s a 24/7 pain in the arse. My apologies again.
 
Jack Subrosa said:
am so sorry I got all this started. I misunderstood that this forum was linked to your company Todd, and I misunderstood the purpose and rules of the forum. So my bad and I apologize. But for what it’s worth Todd, in 24 hours using your forum, I have a much better understanding of how to do what I was otherwise trying to figure out. The forum has been invaluable in that short time, and it seems you are providing a service, products and advice that I haven’t gotten and aren’t available from my sources. I understand that running a business is hellish, but from what my limited experience tells me, you have a niche. But I’m sure it’s a 24/7 pain in the arse. My apologies again.
Click to expand...
Appreciated. The home page outlines it pretty well;

GuzziTech.Com

Welcome to your International Moto Guzzi motorcycles Tech tips website. GuzziTech offers solutions to your issues with more than just words. Happy Moto'in.
www.guzzitech.com www.guzzitech.com

In large, it’s just me trying to run this website, my GTM online business, workshop (for service and manufacturing), and prior to COVID, a Guzzi rental business. Almost all unraveling at an alarming rate right now.
Time suck for me, but thanks for your words and understanding. Thanks for your service, and best to you in the New Year.
 
You must log in or register to reply here.
Back
Top