Suzuki Inazuma GW250

Main Inazuma GW250 Boards => Accessories and Products => Topic started by: Topnotch250 on October 15, 2019, 07:43:41 PM

Title: Yoshimura Exhaust stainless end cap
Post by: Topnotch250 on October 15, 2019, 07:43:41 PM
   :158:I have just Purchased a New Yoshimura  Silencer for the GW has anyone fitted one is there any need to  re tune , Is there any Performance  difference ? :821:
Title: Re: Yoshimura Exhaust stainless end cap
Post by: Robell on October 16, 2019, 07:02:32 PM
Not fitted one, but my guess would be, no and no.

The most obvious difference would be weight loss  :002:
Title: Re: Yoshimura Exhaust stainless end cap
Post by: enzo on October 18, 2019, 01:01:28 AM
well it s hard to tell but i ve noticed some kind of difference in performance, not much but a little more power. i fitted only one can and closed the other on the left side, that give me easier access to the chain for maintenance. Sound brilliant too. The fitting was easy enough beside the right silencer refused to come off because of rot. enjoy
Title: Re: Yoshimura Exhaust stainless end cap
Post by: Wookiee on October 21, 2019, 09:52:32 AM
I fitted a 2 into 1 Delkevic system on my Zuma a few months back, I didn't get the bike re-tuned afterwards and the performance has been OK. A few people have said that it would be worth doing and others have said no, I'm of the train of thought 'if it's not broke, don't fix it' so I've left it be. Performance wise you'll maybe see marginal improvement, we're talking 0.xbhp increase. Just enjoy the nicer noises & appreciate the shiny bits.  :821:
Title: Re: Yoshimura Exhaust stainless end cap
Post by: enzo on October 21, 2019, 03:21:17 PM
so no major back fire?! i already enjoy the sound of my slip on, much better than the original pipes and there is a little improvement on torque somehow...i think  :007:
Title: Re: Yoshimura Exhaust stainless end cap
Post by: Wookiee on October 21, 2019, 03:28:52 PM
*Originally Posted by enzo [+]
so no major back fire?! i already enjoy the sound of my slip on, much better than the original pipes and there is a little improvement on torque somehow...i think  :007:

Mine does 'pop' a bit when I roll off of (full) throttle.  :001:
Title: Re: Yoshimura Exhaust stainless end cap
Post by: enzo on October 23, 2019, 01:25:50 AM
yeah that s what is backfiring  :008: technically it s not exactly that good, your bike is running lean. that s when it s needs a tuning. mine actually does too with a slip on only ! but only a little bit. Sadly it s harder to have an injection tuned than carbs     
Title: Re: Yoshimura Exhaust stainless end cap
Post by: SammyJ on May 22, 2020, 04:32:35 AM
I have the Yoshimura R77J on my GW250. With the stock air filter, there should be no problem and it should not require further tuning. Of course if you’re gonna install a K&N aur filter then there will be problems if the bike is not dyno tuned. The Yoshi is awesomely light (<3kg vs 18-19kg stock silencers) and sounds fantastic. I’m very pleased with it.