Wildguzzi.com
General Category => General Discussion => Topic started by: vf84pc on November 14, 2025, 06:10:33 PM
-
On my last ride the temp was in the low 50's the cat put out some heat on my feet. I was thinking of decating the bike.
Mistrial option: $$$$%%
Arrow option: more affordable
Chinese eBay option: most affordable
Should this be done with the Brain boost, V-stack and K&N filter mod? What is everyone's experience?
-
Just slap on the cheap Chinese unit leave the rest alone.
-
I was very happy with a full “knock off” exhaust.
Great sound, a small power boost, no fuel/air mods and less heat.
YMMV
inditx
-
I've a '24 E5+ Strada. I went full Mistral. 10Kg shaved off bike. Runs great and sounds better without being annoying.
(https://i.ibb.co/N6g9vK9j/IMG-20241228-105030.jpg) (https://ibb.co/N6g9vK9j)
-
I went with the Agostinee system, 10lbs weight loss, super high quality easy instal. Looks great, sounds much better and seems like it has more punch. I kept the stock muffler and it runs like a champ, no hiccups or off throttle pops.
It is a chunk of change, however, think it was about $900! But I figured it will last as long as the rest of the bike, not sure that will be the case with Ali Express type? Also, I thought it was cool it’s made in the same town as MG! I don’t have a 23, so it’s a bit different.
-
I got a decent price on the Mistral headers and I thought the quality seemed the best so I went with them. Before purchasing, I contacted a few of the popular companies to get more info - all three claim to use 304 stainless, and the claimed IDs are listed below. Guareschi never responded to my emails, but their bundle with the UpMap is a solid deal - aside from the tariff's you'll have to pay now.
Mistral - 42mm ID
Agostini - 38mm ID
Arrow - 44mm ID
For the tune itself, I went with the UpMap, which I purchased from AF1. Flashing the bike was easy, and it's hard to describe what an improvement it was on my '23. I ran it with the decat and no tune for probably 6 months, but the tune made it run smoother, cooler, and it's definitely a bit faster - not a ton, but noticeable for sure. The throttle mapping is smoother/less jerky, and I notice much less vibration while riding, especially on the highway - for example: the mirrors are much clearer at 60-75mph on the highway, where before they were often a bit fuzzy from vibrations. If I'd read someone say that before, I would have assumed it was just placebo, I was pretty amazed.
-
So you did full mistral with the "up map" did you have the Velocity stack or the twin boost? Is the map you used specific to the Mistral exaust?
-
So you did full mistral with the "up map" did you have the Velocity stack or the twin boost? Is the map you used specific to the Mistral exaust?
I have Mistral headers/decat, stock muffler, and an UpMap with a Zard tune. The V-Twin boost is a cheaper spoof solution than the UpMap which is a true tune and (likely - but impossible to verify) changes fuel mapping and ignition timing. The velocity stack could help a bit, velocity stacks are designed to optimize airspeed at certain RPM ranges, so usually they're tuned for more low end, midrange, top-end, etc - but unless you have fancy variable length stacks (very expensive, but cool) you're making a sacrifice somewhere for a gain elsewhere - but not necessarily a straight "upgrade" if that makes sense.
-
Is the hard tune kind of a general tune? Would you use that map with Arrow headers?
-
Is the hard tune kind of a general tune? Would you use that map with Arrow headers?
The Zard tune was developed by Guareschi as far as I'm aware, and yes I would use the same one personally. Any off the shelf tune won't be perfect for all bikes/parts etc. but usually they get close enough. There are a few Zard tune options in the UpMap catalog so it depends which one you want to go for. I believe there are a couple created for people running a decat.
-
+1 on the Zard tune. works great.
I think I bought agostini, but would have to confirm whether it was agostini or mistral. got mufflers too, with db killer left installed. runs great.
i’d save the “$$$$” label for cost for the Guzzitech option.. that one takes the cake on cost. Probably great, but thats a hot topic.
My setup works great, all agostini (or mistral?) and upmap w/Zard.