What did you do to your Suzuki GSXS today?
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I rode it about 250km down the great ocean road and wasn't it awesome fun, i am just finishing off the K's for the first service for Monday and this i believe this was just right for the running in as i have done plenty around town riding changing 1st 2nd and 3rd gear and also some highway k's in 6th gear and the ocean road had me switching around 3rd 4th and on the straights 5th gear revving between 3-6k and the bike suited this down to a tee, even if the bike was run in doing what i did today would have been no different and riding the bike as hard to my ability was not hard work for the bike at all.
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Nice been waiting for this to come available, may i ask where you got it from please.
Suzuki dealer - "genuine" Suzuki part.
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I'm having a custom Yoshimura R77 full system welded for me right now. They are cutting out the CAT and custom bending a pipe from the carbon pipe down to the header opening where the CAT used to be. I'll take photos when I get it back.
The reason I'm getting a custom job is because the slip-ons are a waste of money. The CAT is the muffler and the muffler is just a dummy shell used to route exhaust flow. By putting a slip-on on, all you're doing is replacing the router. The muffler is underneath the bike (CAT).
The only full systems are over priced. Yoshimura doesn't make a full system, only money-wasting slip-ons.
So, I'm having my own system fabricated and it's going to look sweet. Carbon R77 is absolutely beautiful.
The reason I'm getting a custom job is because the slip-ons are a waste of money. The CAT is the muffler and the muffler is just a dummy shell used to route exhaust flow. By putting a slip-on on, all you're doing is replacing the router. The muffler is underneath the bike (CAT).
The only full systems are over priced. Yoshimura doesn't make a full system, only money-wasting slip-ons.
So, I'm having my own system fabricated and it's going to look sweet. Carbon R77 is absolutely beautiful.
I just ordered the full M4. Why do you say that it is junk?
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I noticed this too. The 'big box' is a silencer and the CAT is the small cylinder on the header side of the big box. I'm thinking of taking the end can off and seeing how loud it is.. if it's acceptable, maybe I'll just need a slash cut tail piece >
Hey Martin...I noticed this too. The 'big box' is a silencer and the CAT is the small cylinder on the header side of the big box. I'm thinking of taking the end can off and seeing how loud it is.. if it's acceptable, maybe I'll just need a slash cut tail piece >
thats a great idea. So obvious. Let us know the results before i get the spanners out.
cheers.
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299 Posts
I actually thought once of just taking it off and leaving it off. Thought the lack of exhaust would look pretty cool too.
Lucky, I don't think it's junk. It looks nice actually. I think it might be a bit loud though, because the muffler is too small and there's nothing to create any back pressure at all. I edited my post. For 850 bucks, it's looks pretty nice otherwise.
Give us your review once it's installed and tested.
Lucky, I don't think it's junk. It looks nice actually. I think it might be a bit loud though, because the muffler is too small and there's nothing to create any back pressure at all. I edited my post. For 850 bucks, it's looks pretty nice otherwise.
Give us your review once it's installed and tested.
OK, good. My last few exhausts have been Brock's. I contacted them and they are not planning on making an exhaust for our bikes. M4 sounded good on the dealer's bike and it was available "right now" so I bought it. We'll see......
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Got the bazzaz Z-Fi installed. Doing the healtech X-TRE now. Well REDOING the TRE lol. Stupid vampire clamps, knew I should have just stripped and soldered the connection. Going to drink some tea and watch telly for a bit before taking the tank off again and doing the wiring properly.
Not ridden it yet with the bazzaz unit. Had a look over the map though, wow. Many changes and as has been pointed out most of it reducing fuel not adding. There are some section where it adds fuel though.
Edit: then again it does bypass the oxygen sensor in the exhaust and replace it with a resistor so the fuel map would be in relation to whatever that value resistor is telling the ecu to adjust for. For all I know it could be telling it that its running rich all the time. Probably not worth drawing too many conclusions from the fuel map without a dyno and AFR map.
Not ridden it yet with the bazzaz unit. Had a look over the map though, wow. Many changes and as has been pointed out most of it reducing fuel not adding. There are some section where it adds fuel though.
Edit: then again it does bypass the oxygen sensor in the exhaust and replace it with a resistor so the fuel map would be in relation to whatever that value resistor is telling the ecu to adjust for. For all I know it could be telling it that its running rich all the time. Probably not worth drawing too many conclusions from the fuel map without a dyno and AFR map.
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Please don't let this thread turn into a "your engine needs back pressure" thread... I don't think I could handle another one of those.
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bugger cause i was actually about to ask about it as i was looking inside the muffler today and i am considering cutting the end of it out and welding a pipe straight through so it looks original but does not baffle, this is of course after some testing this weekend removing the baffle to see what difference it would make, but should i start another thread or is there one going cause i do not want to fill this great thread with an exhaust question if it is a controversial question.
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I'll keep this as brief as possible to avoid boring/infuriating people who've been around the "backpressure" block a million times... cars, bikes, trucks, whatever...
The whole FALLACY about an engine needing backpressure arose from people fitting larger diameter exhausts to their engines, and noticing that things actually ran WORSE. They ASSUMED that this was because that there was less backpressure. The truth is that the diameter of the exhaust affected the VELOCITY of the gases being evacuated from the combustion chamber (which is THE job of the exhaust system).
A perfect exhaust has NO BACKPRESSURE but MAXIMUM AIR VELOCITY.
In the words of Sean Connery in The Untouchables... "Here endeth the lesson".
I would go so far as to say the perfect exhaust has negative pressure at all RPM for maximum scavenging. Of course, with scavenging comes a poo load of cam discussion but that is too much for a thread like this. Nice write up Rod. Impressive and concise.
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Healtech X-TRE installed and working. Note for anyone who gets one make sure you get the supplemental instructions for our bike. The unit is the same for many bikes only the fitting instructions differ. If you don't get the supplemental instructions and cant find em on their website PM me and I'll send you the PDF.
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