2017 F3 Exhaust. - MVAgusta.net
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post #1 of 12 (permalink) Old 10-15-2017, 05:36 PM Thread Starter
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2017 F3 Exhaust.

2017 F3 question.... Will de-cating, but keeping my stock exhaust still result in better sound, performance and running temps?... keeping the stock exhaust, is it a night and day difference in sound? thanks advance! any input is greatly appreciated.
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post #2 of 12 (permalink) Old 10-15-2017, 05:45 PM
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There seem be people suffering broken valves when using a different exhaust.
To me these engines dont like a different exhaust. Not sure if people actually ECU flashed their bikes though.

The big lump at the exhaust is mostly to cancel out volume. So removing that will increase sound.
Which automaticly changes different pressure in engine/valve/exhaust pipe etc..etc..

I'd be careful with it though.

Here is the topic about these problems. Have a look.
http://www.mvagusta.net/forum/129-ma...here-hope.html

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post #3 of 12 (permalink) Old 10-17-2017, 04:20 AM
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My engine dropped a valve with stock exhaust.

The valve failures are mostly due to the valve stem guides.

Quote:
Originally Posted by Black_Gold_Saw View Post
There seem be people suffering broken valves when using a different exhaust.
To me these engines dont like a different exhaust. Not sure if people actually ECU flashed their bikes though.

The big lump at the exhaust is mostly to cancel out volume. So removing that will increase sound.
Which automaticly changes different pressure in engine/valve/exhaust pipe etc..etc..

I'd be careful with it though.

Here is the topic about these problems. Have a look.
http://www.mvagusta.net/forum/129-ma...here-hope.html
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post #4 of 12 (permalink) Old 10-17-2017, 04:27 AM
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The dropped valve issue is not related to which exhaust a bike has.
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post #5 of 12 (permalink) Old 10-17-2017, 05:36 AM
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I am thinking of doing the same thing to my bike and may do it this weekend or next unless something else I am looking into pans out.
I am sure it will be a bit louder since just keeping the exhaust valve open gives it a different tone. I do not think it will make a difference with engine temp. These bikes like to run hot and cooling system does the job of keeping the temperature in specs.
Performance wise you should see a small boost if you add a more flowing air filter and map the ECU.
Are you going to do this yourself or have someone in mind to do it for you?

PS...just a friendly reminder. Since you have 2017 F3 call or go to your dealer and ask them about the latest service bulletin for the engine head on your bike. MV has an updated design for the 17 models. Dealer will need to check your VIN if bike needs updated head.

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Originally Posted by usmckilo View Post
2017 F3 question.... Will de-cating, but keeping my stock exhaust still result in better sound, performance and running temps?... keeping the stock exhaust, is it a night and day difference in sound? thanks advance! any input is greatly appreciated.

Last edited by Angelo-MV; 10-17-2017 at 05:42 AM.
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post #6 of 12 (permalink) Old 10-23-2017, 07:34 AM
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Well my other option panned out.
You may want to get in touch with https://www.passeriniperformance.com to ask about their headers. It is not listed on website but shoot him an email. I was quoted a crazy ridiculous low price for complete system so I am guessing just the headers will be priced fairly too. Might make it worth it to keep stock headers intact and get something like this.
Pics are prototype.
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post #7 of 12 (permalink) Old 10-24-2017, 11:50 AM
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Thanks for sharing that find! Tasty looking headers... Tasty 675 track bike they have for sale, also!


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post #8 of 12 (permalink) Old 10-24-2017, 05:03 PM
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Would be interesting to know if the 2017 euro 4 models come with a additional oxygen sensor due to the euro 4 regulations?, maybe a 2017 bike owner can confirm that?
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post #9 of 12 (permalink) Old 10-25-2017, 03:00 PM
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I am going to cut out the cat and weld in a straight pipe on my 14' 675 and would like to know what I need to do regarding this and its OEM ecu setup. I can put the 02 sensor in and space it out further but is there some other ex-up control system that will sense a fault?

Bike won't be in for another week.
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post #10 of 12 (permalink) Old 10-25-2017, 03:36 PM
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@GCBC: If you are removing the exhaust valve, leave the electronics hooked up and there should be no fault seen.

As for remapping your ECU, flow will go up in your system and that will lean it out. I'd find a tuner.

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