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  #1  
Old 25th January 2019, 04:45 PM
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PADDYOT PADDYOT is offline
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Default Re-map or not?

Lads,

Looking for some advice. I bought a Bodis decat pipe for the bike.
When buying it I assumed that I'll have to get it re-mapped.
I've since read that with the Bodis, no re-map is needed, due to the fact that it's not a 'straight through' pipe but a bendy one, which builds back pressure. Then of course there was other folks that scoffed this theory and insisted that a re-map was needed. Some folks swore blind that it 'made all the difference'. So I emailed Bodis and they said:

"Hi Paddy.

With our exhausts and the original exhaust lambda-results on test-bench had been fine.

We did not measure any other exhaust.

Mit freundlichem Gruß/Best Regards

Dieter

Dieter Wolter

Geschäftsführer

Speer Racing Parts GmbH

Wannweilerstrasse 65

72770 Reutlingen

Deutschland"

So, I'm leaning towards no re-map, am I missing something?

[IMG]Click the image to open in full size.[/IMG]

[IMG]Click the image to open in full size.[/IMG]
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  #2  
Old 25th January 2019, 05:44 PM
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corkgsxr corkgsxr is offline
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Biker.ie Member No. 16432 from cork
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Default Re: Re-map or not?

It might seem fine but your missing the benefits of a decat without a remap.
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  #3  
Old 25th January 2019, 05:49 PM
me2 me2 is online now
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Default Re: Re-map or not?

The purest types will always insist ya dyno any bike after fitment of an aftermarket exhaust. The bolt on bling and tat crew will say no need. What I get from your reply from the manufacturer - is non commitment either way. The bottom line would seem to be what are your values. Delighted to have been no help to ya whatsoever.

If it was me and Id the readys, a re-map it would be.
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  #4  
Old 25th January 2019, 06:24 PM
dec c dec c is online now
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Default Re: Re-map or not?

Going by that then it's a decat pipe
that doesn't do what a decat pipe does
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  #5  
Old 25th January 2019, 06:31 PM
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corkgsxr corkgsxr is offline
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Default Re: Re-map or not?

Originally Posted by dec c
Going by that then it's a decat pipe
that doesn't do what a decat pipe does
No it does exactly what it's meant to do. Remove the cat.

Changing from a exhaust to Abit more freer is not a massive difference.

Removing a cat makes a huge difference to exhaust flow. Too much of a difference to not need a remap
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  #6  
Old 25th January 2019, 06:47 PM
dec c dec c is online now
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Default Re: Re-map or not?

Originally Posted by corkgsxr
No it does exactly what it's meant to do. Remove the cat.

Changing from a exhaust to Abit more freer is not a massive difference.

Removing a cat makes a huge difference to exhaust flow. Too much of a difference to not need a remap
That's what I'm saying.
Too fucking stoned to be explaining shite at the moment
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  #7  
Old 25th January 2019, 07:07 PM
DavyH DavyH is offline
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Default Re: Re-map or not?

A remap will make all the difference...not like it needs it,they’re an insane machine.
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  #8  
Old 25th January 2019, 09:34 PM
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sharpbikes sharpbikes is offline
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Default Re: Re-map or not?

all bikes generally respond well to remaps anyway if they're still in stock fueling. with all the regulations on sound and emmisions i would think a remap would make a stock bike respond better let alone a system that has had a cat removed.
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  #9  
Old 25th January 2019, 11:21 PM
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PADDYOT PADDYOT is offline
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Default Re: Re-map or not?

Yeah I knew it was too good to be true so I'm not taking any chances. Re-map it is so.

Whatever about sound or performance gains, the most impressive and surprising part is the difference in weight! I was genuinely shocked when I removed the cat off the bike, fucking thing weighs a ton! Really notice the difference with it gone. I've never bothered with stuff like this before, just got on with riding the bikes but holy shit, money well spent
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  #10  
Old 28th January 2019, 07:56 AM
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StarBoy StarBoy is offline
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Default Re: Re-map or not?

Was thinking about a decat myself , was there much to it ?
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  #11  
Old 28th January 2019, 08:48 AM
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Default Re: Re-map or not?

Since you're keeping the lambda, the bike can sort out the fuel/air mixture and keep running fine without the cat.

But, as the lads mentioned, you now have much more airflow which can generate more power so a remap be advantageous. OEM maps are usually conservative and try to go for reliability and mpg over the full potential of the engine.

So yeah, bike will run just fine without it but you'll have no gains. If you want more than sound, remap :)
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  #12  
Old 28th January 2019, 07:41 PM
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PADDYOT PADDYOT is offline
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Default Re: Re-map or not?

Originally Posted by StarBoy
Was thinking about a decat myself , was there much to it ?
Doddle, 20 minute job. Whip off the exhaust, two clamps either side of the cat and then it's just a straight swap. Fit and finish were perfect. No need to go near the Lambda sensor. That being said there is no butterfly valve in the exhaust on the 2016 SD-R. I believe the 2017 on-wards have a servo controlled valve in there that has to have the cables and/or wiring removed.

Bought from this crowd, very easy to deal with:

https://www.bodis-exhaust.com/index.php?site=18&lang=en
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  #13  
Old 28th January 2019, 07:41 PM
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PADDYOT PADDYOT is offline
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Default Re: Re-map or not?

Originally Posted by RTV
Since you're keeping the lambda, the bike can sort out the fuel/air mixture and keep running fine without the cat.

But, as the lads mentioned, you now have much more airflow which can generate more power so a remap be advantageous. OEM maps are usually conservative and try to go for reliability and mpg over the full potential of the engine.

So yeah, bike will run just fine without it but you'll have no gains. If you want more than sound, remap :)
Food for thought, thanks for the advice.
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  #14  
Old 28th January 2019, 10:23 PM
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StarBoy StarBoy is offline
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Default Re: Re-map or not?

Originally Posted by PADDYOT
Doddle, 20 minute job. Whip off the exhaust, two clamps either side of the cat and then it's just a straight swap. Fit and finish were perfect. No need to go near the Lambda sensor. That being said there is no butterfly valve in the exhaust on the 2016 SD-R. I believe the 2017 on-wards have a servo controlled valve in there that has to have the cables and/or wiring removed.

Bought from this crowd, very easy to deal with:

https://www.bodis-exhaust.com/index.php?site=18&lang=en
Looks great ! Where will you get the map from ? Looked at the website they only specified link pipe for a 2016 GT ( mine's 18). It has the servos etc. and probably a pain in the rocks to sort. That said I really like the look of the set up.
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  #15  
Old 28th January 2019, 10:51 PM
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PADDYOT PADDYOT is offline
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Default Re: Re-map or not?

Originally Posted by StarBoy
Looks great ! Where will you get the map from ? Looked at the website they only specified link pipe for a 2016 GT ( mine's 18). It has the servos etc. and probably a pain in the rocks to sort. That said I really like the look of the set up.
That's another thing I'm trying to decide on. Would like to bring it to my local, the folks in RPM in Drogheda. Top outfit but very busy so will likely have to book it in soon to avoid a long wait for Dyno time. Failing that I think mototuning would be the next port of call. Time to break open the piggy bank.

There's more than likely a few youtube clips out there for doing the same job on the GT. Bodis were very quick to respond to emails, maybe ask them what the story is with the 2018 model? Let us know if you decide to go ahead and how you fare.
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  #16  
Old 29th January 2019, 08:16 AM
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Default Re: Re-map or not?

Mototuning.ie con definitely sort you out.

If they know the exhaust, you can just send them the ECU and they'll re-map it. If you want the full custom experience and dyno time, you have to go to them.

They did my MT09 and happy out with the results.
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  #17  
Old 29th January 2019, 11:51 AM
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corkgsxr corkgsxr is offline
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Biker.ie Member No. 16432 from cork
10,354 posts since Jun 2009
Motorbike: 2017 s1000rr
Modifications: brakes, pipes
Default Re: Re-map or not?

Originally Posted by RTV
Since you're keeping the lambda, the bike can sort out the fuel/air mixture and keep running fine without the cat.

But, as the lads mentioned, you now have much more airflow which can generate more power so a remap be advantageous. OEM maps are usually conservative and try to go for reliability and mpg over the full potential of the engine.

So yeah, bike will run just fine without it but you'll have no gains. If you want more than sound, remap :)
Not necessarily. If you go outside the allowed factory fuel trims it won't adjust it near enough.

That's more for going between hot weather in the Alps to cold weather 1000 feet lower or that sort of crack
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  #18  
Old 29th January 2019, 10:47 PM
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StarBoy StarBoy is offline
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Motorbike: 1290 SuperDuke GT,ZX12R
Default Re: Re-map or not?

Originally Posted by PADDYOT
That's another thing I'm trying to decide on. Would like to bring it to my local, the folks in RPM in Drogheda. Top outfit but very busy so will likely have to book it in soon to avoid a long wait for Dyno time. Failing that I think mototuning would be the next port of call. Time to break open the piggy bank.

There's more than likely a few youtube clips out there for doing the same job on the GT. Bodis were very quick to respond to emails, maybe ask them what the story is with the 2018 model? Let us know if you decide to go ahead and how you fare.
Will do
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  #19  
Old 30th January 2019, 08:20 AM
black pudding black pudding is online now
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Default Re: Re-map or not?

This is cat
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  #20  
Old 30th January 2019, 12:21 PM
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RTV RTV is offline
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Biker.ie Member No. 34969 from Cork
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Default Re: Re-map or not?

Originally Posted by corkgsxr
Not necessarily. If you go outside the allowed factory fuel trims it won't adjust it near enough.

That's more for going between hot weather in the Alps to cold weather 1000 feet lower or that sort of crack
I would agree if you go with a straight pipe or something very extreme, but in this case the exhaust manufacturer told OP that it has been tested and it's OK.
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