• 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!
  • 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.
  • 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.
  • Like the new V100, GuzziTech is full throttle into the future! We're now running on an all-new server and we've updated our Forum software. The visual differences are obvious, but hopefully you'll notice the super-fast speed. If you notice any glitches or have any issues, please post on the Site Support section at the bottom. If you haven't yet, please upgrade your account which is covered in the Site Support section or via the DONATE tab above, which gives you full site access including the DOWNLOADS section. We really appreciate every $ and your support to keep this site ad-free. Create an account, sign in, upgrade your account, and enjoy. See you on the road in 2024.

V7III Backfire on Ignition

A

Alec Goldstein

Just got it firing!
Joined
Sep 30, 2018
Messages
2
Location
Washington, D.C.
Since removing my evap cannister I have noticed a loud backfire when I start my bike - it seems to happen maybe 25% of the time. Is this normal or something I should deal with?

I have my sas removed and Todd's exhaust and flash on the bike.

Thanks in advance for any help
 
Alec Goldstein said:
Since removing my evap cannister I have noticed a loud backfire when I start my bike - it seems to happen maybe 25% of the time. Is this normal or something I should deal with?

I have my sas removed and Todd's exhaust and flash on the bike.

Thanks in advance for any help
Click to expand...

I suggest you contact Todd direct. The map may not account for the canister removal if you didn't tell him that would be a condition of the bike.
 
Double check to see if the map is active/loaded. Should have an aesterik next to the fuel map that is loaded. Mine starts with a rush and immediately settles down to a nice idle.
 
Also:
  • Be sure that there are no intake or exhaust vacuum leaks resulting from the EVAP system removal or the installation of the new exhaust system.
  • Be sure that the SAS bypass widget is properly connected.
Every engine is slightly different. When I fitted the Agostini mufflers to my Racer, the first map Todd sent me for that configuration had some minor issues. We worked together to develop a better map, which resulted in superb starting and running performance, but a bit of a backfire issue (I called it "burp and blatt" if I recall, or something like that) developed. Before changing the map again, I did the SAS removal ... the backfire issue then went away.
 
You must log in or register to reply here.
Back
Top