Decat and M4 - Suzuki GSXS1000 Forum
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post #1 of 10 Old 09-12-2016, 09:42 PM Thread Starter
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Decat and M4

Hi,

I previously removed the main muffler, the Cat and the exhaust valve but left the slip on in place as it seemed fairly straight through and unrestrictive.

Just changed the slip on to an M4 slip on and i can't believe how much louder it is, a lot louder and much deeper sound

Not sure of any change in performance yet, will take it out today for testing
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post #2 of 10 Old 09-13-2016, 02:06 PM
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So now you are running stock headers into a straight pipe into the M4 slip on? Must be quite loud!
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post #3 of 10 Old 09-13-2016, 08:05 PM Thread Starter
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Originally Posted by JeffroGymnast View Post
So now you are running stock headers into a straight pipe into the M4 slip on? Must be quite loud!
Yes, very loud - same as a full M4 system i expect, rumbly and low and low speed but a great noise as you open her up.

No problems with the police here!
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post #4 of 10 Old 09-16-2016, 12:07 PM
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Can you show a picture without the cover and from the other side please =)
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post #5 of 10 Old 09-16-2016, 08:23 PM
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+1 here as well, more information please, like where did you get the straight pipe from and did you re-map it?
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post #6 of 10 Old 09-16-2016, 09:35 PM Thread Starter
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Can you show a picture without the cover and from the other side please =)
As requested

Sorry - tried but I can't upload any more attachements - looks like a limit of 10MB

I'll try and link

https://www.dropbox.com/s/uhga2gsg3a...23.47.jpg?dl=0

https://www.dropbox.com/s/c7tkdkjhsx...25.34.jpg?dl=0

https://www.dropbox.com/s/bne16qq4gf...25.40.jpg?dl=0
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post #7 of 10 Old 09-16-2016, 09:39 PM Thread Starter
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+1 here as well, more information please, like where did you get the straight pipe from and did you re-map it?
I got the straight pipe mad locally by a welder, replaces the cat and the large silencer box, have since disconnected the SET valve too.

Yes, re-mapping myself, bought the Flash-tune remap harness and software and a daytona sensors AFT logger. Will take it to the Dyno soon too but its nearly 1000km away so want most of the mapping sorted by then, will be mostly fine-tuning
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post #8 of 10 Old 04-13-2017, 12:10 PM
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Hey quick question. Just put on M4 slip on myself. And am disliking the shiny stock heat shield. Noticed your is black, did you powdercoat it or spray paint it? If so what kind of paint? Thanks!
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post #9 of 10 Old 04-13-2017, 10:09 PM Thread Starter
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Hey quick question. Just put on M4 slip on myself. And am disliking the shiny stock heat shield. Noticed your is black, did you powdercoat it or spray paint it? If so what kind of paint? Thanks!
Hi, got the heatshield powder coated along with the rear sets (although now replaced the rear sets)
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post #10 of 10 Old 04-14-2017, 09:40 AM
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Awesome, I will be going same route in the near future. Thanks! Like your light setup as well
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