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Discussion Starter #1
I was going to post this under the "Exhaust Question" thread from this morning, but didn't want to hijack that .....

Okay - I just bought a 2006 F4 1000 S and wonder about exhaust mods. The consensus I have read seems to be that the RG3 is the preferred slip-on. What I don't get yet is whether the mid-pipe needs to be replaced on the "S" model, and if so, why?

Also, should I change to the chip supplied with the RG3, go with a Power Commander, both, neither?

I've seen a lot of discussion about this on R and 312 models, not so much on S models. Thanks in advance!
 

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Step one: Replace the mid pipe. Step 2 get the rg3s. Step 3 either get the chip to go with them or get the Power commander. I would get the PC if I were you.

You don't "need" to replace the midpipe but if you are fitting the "race" exaust you should.

CAG
 

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Discussion Starter #3
You don't "need" to replace the midpipe but if you are fitting the "race" exaust you should.

CAG
Okay - what benefit does this provide? (By "race" exhaust I take it you are talking about the RG3 ....)
 

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I'd go along with what CAG says although I went for Ti rather than the RG3's, slightly different exhaust note but both are much better than standard IMO:)
 

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Well, I replaced mine. Removed the cat. Just allows the bike to breath better. I then fiited a PC and then placed on the dyno, job done. Hwever one little bit of very important advice and I have learn't this from bitter experience, when the bike goes into the MV dealer for servicing, MAKE SURE they don't return the bike to factory settings.
 

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The conventional wisdom is that by removing the cat, you make the exhaust more free flowing. Benefits include less heat build up in the exhaust and more hp/torque. Not having seen a dyno run comparing cat equipped with cat removed I can't say for sure you will achieve this. Removing the cat probably changes the exhaust note slightly, but again I think it is subjective.

I have tried stock, RG3s and Ti on my 1000. To my ears, the RG3s sounded best, followed by the Ti. I think the Ti sounds better on the 750. Again I have not had the bike dynoed yet with the RG3s Power commander and Titanium midpipe. I do have a dyno run for the 1000 in bone stock trim.

So, I like the sound of the cat-less RG3 equipped 1000. I put no faith in the butt dyno. I will reserve judgement on performance until I dyno the bike again.

CAG
 

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I replaced the midpipe, put on a RG3 with an Rapid Bike module. Top end power stayed about the same, but over the whole range I gained lots of hp and nm. Would you like me to post the graph?
 

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Discussion Starter #8
Would you like me to post the graph?
Yes, please. I doubt that I will feel the need for MORE power than stock, but the prospect of better QUALITY of power is worth contemplating the considerable lump of cash required for RG3s, mid-pipe, and a PC.

CAG (and others), what can you tell me about the difference between the Nissin brakes vs. the new radial Brembos?
 

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I have a 1000S myself that I have just got done tuning a stock exhaust system on, with only an open cat. done to it. This mod by itself, along with the proper chip (to enrichen the mixture) have increased the horsepower by what seems to feel like 5 to 10 hp while also making the bike more responsive throughout it's powerband to boot. In my opinion despite whatever exhaust system you ultimately end up deciding on you need to do the Cat as part of that upgrade if your expecting an real benifits from it other than just sound db's. In my eyes at least, the cat mod is the pre-mod you need to do before any other mod involving the exhuast- simply because of the nature of it's design, how it effects back pressure when in place and the amount of heat it produces.
 

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I agree with the other guys. I have an S.
Replace the CAT mid pipe first. Needs no tuning mods.
I put the RG3 's on because I like the look and sound. I tried 3 chips. The standard, the Ago and the Corse. I couldn't get the Corse to run right. I loved it's racier feel but it backfired badly. I actually put up with it for about 6 months because it was a great feel.
I then had a PC 111 installed with the Corse chip and some slight tweaking and voila...it is fantastic. So strong everywhere.

So that's my little story. Even the Duke guys come after at a stop and says that it sounds beautiful.
 

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hi bmwone i have an 06 1000s, i replaced mid section , new rg3 cans, power commander and three dyno runs to get it set up, the benefits are smoother response all through the range louder noise but not too loud, and some beatiiful pops and bangs on the over run, it was not cheap, but so worth doing.
 

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I had the Brembos on my 1098. Since they are 2 different bikes I'm not sure how valid a comparison would be. There are some members here that have them on their MVs. They would be able to give you a more informative answer. I will say I find the Nissens fine. The brakes on the 1098 were something else though and they looked sweet.
 

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Yes, please. I doubt that I will feel the need for MORE power than stock, but the prospect of better QUALITY of power is worth contemplating the considerable lump of cash required for RG3s, mid-pipe, and a PC.

CAG (and others), what can you tell me about the difference between the Nissin brakes vs. the new radial Brembos?
Here it is:
 

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