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Changing exhaust

Patto

Just got it firing!
Joined
Jul 26, 2017
Messages
5
Location
England
Hi I was thinking of having a local company make up some custom silencers mainly for a nice sound , will the bike need remapping ? The air filter and box will be staying stock
Thanks
 
Many of us have exhausts with no re-mapping. Perhaps if the silencers/db killers are removed but I've got the db killers in my Agostini's and no re-mapping at all. Will the bike likely run better better with a remap? Yes. But you don't "need" it.

Having said that, I may buy Todd's fueling kit in the spring unless a good deal pops up before then.
 
Hi I was thinking of having a local company make up some custom silencers mainly for a nice sound , will the bike need remapping ? The air filter and box will be staying stock.
Find just one motorcycle dyno shop and run your bike now/first for air/fuel ratios... and the shop will likely stop before they even do the power run, because the 1400 runs so critically lean bone stock, that they will tell you something must be wrong. I cannot fathom not fixing the fueling first before any mods. That said, people unknowingly (ignorantly) do it all the time. It’s too large of an investment for that gamble, for me personally.
I sell a very expensive fuel kit on the Store link above. It is the only thing I have found proven to work.
Most of my labor is documented here; https://www.guzzitech.com/forums/threads/guzzitech-gt-rx-modded-cal-14-dyno-vs-stock.13773/
If you aren’t planning on keeping the bike very long, it’s up to you. That said, It will run 100% better and significantly cooler with corrected fueling.
This topic is well covered in the link above.
 
If all you want is a better sounding exhaust go with Todd’s Guzzitech slip on.
If you would like to have the bike run and sound the way it was meant to, go with the whole exhaust and the fueling modifications. This is what I did and it really transformed the bike. I can now see keeping this bike for a very long time.
 
Even my little V7III with everything stock runs so much better with the GT map, I wouldn't leave it out even if you were going to stick with the stock exhaust system. If I weren't so horny for the sound the Agostinis make, I'd just leave Racer alone with this map in place and be happy forever. The difference is immediately noticeable... It runs the way I expect a properly set up engine to run now.
 
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