Yoshimura Torque Management System

Fat Angry Scotsman · World Chat Champion Joined: 12 Jan 2021 Karma :

Hi all,

As discussed in a previous thread I pretty much decided that (barring anything throwing a spanner in the works) the first proper big-boy bike I was going to get is the 2021 Suzuki Katana.

I have been looking up parts and accessories for it and I have decided to go with the full Yoshimura titanium exhaust for it. While on their website I saw they do a modification they call the "Torque Management System", as shown at the link:

https://shop.yoshimura-jp.com/en/product/syousai.php?id=20196

Is it something worth getting and having installed on the bike or is it just some marketing wank? I was going to take it to a dyno & tune place since it was getting the exhaust changed so would need re-mapped anyway.

Also going to use a fender-delete kit since that rear fender looks fucking awful. Only other thing I need to consider is if changing the stock pipe will stop me putting panniers on it once in a while.
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redeem ouzzer · World Chat Champion Joined: 06 Oct 2015 Karma :

Well there's a dyno curve but the gains don't look huge.

How much is it fitted in the UK?
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chickenstrip · Super Spammer Joined: 06 Dec 2013 Karma :

It says it smooths torque through middle to top end. Is there a problem there on these bikes? I wouldn't have thought so. And any gains do seem to be right at the top, almost when maxed out, so I don't think it'd be that useful for a road bike.
I would say get the bike and ride it as is first, and see how you feel about such mods then.
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MarJay · But it's British! Joined: 15 Sep 2003 Karma :

Get the standard ECU remapped. It'll work better an it'll be invisible in terms of external inspection.
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Raza · Two Stroke Sniffer Joined: 01 Apr 2021 Karma :

Are you going to go for the Samurai pack and heated grips?
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Fat Angry Scotsman · World Chat Champion Joined: 12 Jan 2021 Karma :

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

Fat Angry Scotsman · World Chat Champion Joined: 12 Jan 2021 Karma :

chickenstrip · Super Spammer Joined: 06 Dec 2013 Karma :

Fat Angry Scotsman · World Chat Champion Joined: 12 Jan 2021 Karma :

Weisse Schlange · Spanner Monkey Joined: 09 Nov 2020 Karma :

Hmm
Okey doke.

A pipe won't invalidate a Suzuki warranty.

It looks fucking awful with a tail tidy, the standard looks far better.

A remap to maybe switch off the fuel cut on decell is one thing, but getting a Katana remapped and fitting a full system is going to make for one hell of a first big bike.

I said earlier, the Katana is dead easy to ride and is seriously quick.
You're planning to turn it into a beast for road use . Wise ?? who knows.
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chickenstrip · Super Spammer Joined: 06 Dec 2013 Karma :

Fat Angry Scotsman · World Chat Champion Joined: 12 Jan 2021 Karma :

chickenstrip · Super Spammer Joined: 06 Dec 2013 Karma :

When it comes to cosmetics, you do what you like.
For sound, just go for a decent can - save a fair bit of weight too, likely. If it's really loud, you'll probably get fed up with it soon enough, especially on long trips (and never mind what the neighbours think Laughing

).
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wr6133 · World Chat Champion Joined: 31 Dec 2013 Karma :

YOLO - get the full system, stick a power commander in there and map it. As long as you can trust yourself not to willfully be a moron, though that's a moot point as willfully being a moron won't end better if you have a few less bhp in the motor and a few less db at the end can. So yeah just do it.

It'll probably still be easier to ride than an early 2000's 600cc super sport that has no electronics/abs/safety shite and people happily had them as 1st big bikes.

Tdibs · Traffic Copper Joined: 16 Jan 2015 Karma :

Also run some insurance quote with those mods declared. Prob going to be fairly hefty sum for first big bike.
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