Unexpected benefit from fitting decat pipe - MVAgusta.net
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post #1 of 17 (permalink) Old 12-12-2016, 03:51 AM Thread Starter
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Unexpected benefit from fitting decat pipe

Just wondering if anyone else has noticed a huge improvement in throttle response after fitting a decat pipe?

I fitted an arrows pipe to my 910S and the difference was noticeable from the first ride. It has reduced the snatchy throttle response and smoothed out the bottom end to the point where I am now able to shut the throttle in first gear and the bike runs along smoothly at around 10 km/hr without the jerkiness that was previously so bad I would be constantly riding the clutch.
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post #2 of 17 (permalink) Old 12-12-2016, 10:16 AM
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Same here, the bike responded well to the change without any other mods. I did gut out an original cat middle box which showed better potential but now I have the arrow stubby and arrow can, sounds really nice even with the baffle in.....good mod.

MV F4 750 EVO3 2003
MV Brutale 910s 2007
Honda VFR800 1998
Honda MBX 125 FE 1983
F4 Agusta mini moto replica
Chinese Quadbike made of peanut butter (crunchy).
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post #3 of 17 (permalink) Old 12-13-2016, 03:48 PM
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Hi EVO chris,

just want to pick your brains, I have ordered a Arrow thunder exhaust and it should be here very soon - I hope, can you tell me where the bracket that holds the end can up is fixed to ?
Is it the 2 bolts that fix the right hand foot peg to the frame ?
If so, the 2 allen bolts on my foot peg are as tight as s**t, I have tried to loosen them off before but it feels as if I am going to round off my allen key and then screw up the allen bolt at the same time
I look forward to your answer.

brutale jockey
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post #4 of 17 (permalink) Old 12-13-2016, 11:26 PM
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brutale jockey,

That's the bolts the brackets fit to. Every bolt in an MV is locktited so that is part reason they're so tight. Smacking the heads of the allen bolts fimly with a hammer and drift should do the trick. Use a good quality tool such as a socket driver the correct size for removal.

Cheers

Deano
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post #5 of 17 (permalink) Old 12-14-2016, 11:38 AM
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Hi Deano,

Have done what you said and the allen bolts came out !
Just need the exhaust to arrive now, thank you.

brutale jockey
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post #6 of 17 (permalink) Old 12-14-2016, 01:42 PM
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Good stuff.

Cheers

Deano
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post #7 of 17 (permalink) Old 12-16-2016, 10:52 AM
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So im gathering that not only do you not need a chip for upgrading the exhaust on a 910s but it improves the throttle response (less jerky) to boot??
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post #8 of 17 (permalink) Old 12-16-2016, 05:17 PM Thread Starter
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No chip, remove the cat and thoughtfully recycle (maybe use as a boat anchor) and fit the decay pipe. Took me less than an hour and the bottom end is much improved, not perfect, but to the point where I can shut the throttle fully and ride the 200 metres or so through the car park at work without having to feather the clutch. Just gone through a tank of fuel since the mod and consumption seems to be unchanged. Certainly nothing noticeable.
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post #9 of 17 (permalink) Old 12-20-2016, 10:09 AM
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well that sounds like quite an improvement. looks like i will try to find an earlier two piece header/collector or chop existing header and fit an arrow collector on
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post #10 of 17 (permalink) Old 12-21-2016, 12:15 PM
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You know how the experts always say about the factory exhaust being carefully designed for the best possible performance?

Yeah right.
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