Would a new exhaust system mess up my restriction?

[kd sweety]

as the title says, will a new exhaust mess up my bike if its restricted? im not talking about making it too powerful for the restriction i want to know if the fuel/air mixture from the ecu/cdi play havoc on the bike due to the new exhaust system, also is it possible to use a power commander to restrict the bike?

[chakraist]

This is something I've been wondering, considering buying a K3 to replace broken SY- I wouldn't worry too much about it unless you're getting a full system, a slip on probably wouldn't make much difference to the 33bhp bike (at least I'm fairly sure, please correct me if i'm wrong :D). Although, our bikes are fairly puny at 33bhp, being a big bloke (6'6", 17 stone) I can just about touch 105 down a hill, it's nice to have every last drop of power!

[kd sweety]

This is something I've been wondering, considering buying a K3 to replace broken SY- I wouldn't worry too much about it unless you're getting a full system, a slip on probably wouldn't make much difference to the 33bhp bike (at least I'm fairly sure, please correct me if i'm wrong :D). Although, our bikes are fairly puny at 33bhp, being a big bloke (6'6", 17 stone) I can just about touch 105 down a hill, it's nice to have every last drop of power!

well i need it restricted for a day so i can get the certificate for the insurance company, i could always put the stock one back on...

its a full laser system btw

[dizzyblonde]

hmmmm not sure about restrictions on pointys, but chris has been fiddilin around with his for ages getting mixtures and dynos done right for 33bhp purposes. maybe you could have a chat wid him..he may be able to help

[kd sweety]

dont worry, problem solved, looking at the dyno for it i would say its fine, i lose 0.4 bhp with the baffles in! the only thing it does is give me more power lower down the revs... £500 for that, no thanks

[yorkie_chris]

Dyno's are a little misleading too, they all read a little over "true," so if it comes to court and your bike is making 33.1bhp, you're never going to get convicted as that could be put down to dyno error or any other b0llocks a half decent brief can think of.

[EssexDave]

This post is actually consequence of an msn convo between me and sweety. I couldn't give an explanation but simply put - I was planning to buy my bike with the exhaust already fitted to it (a scorpion can) I've now been told by the dealer, they arn't sure if they can fit the exhaust because it could cause problems with the restriction, not only an increase in power, but also problems such as cutting out, running too rich etc (this is what they said) I have no explanation of why they say this will happen, only that they say it will.

They have said they will double check if it can be fitted and, if it can they will happily fit at a discounted price at the first service. (That's free fitting + discount on the zorst)

Anyone know what they are talking about?

[Larry]

This post is actually consequence of an msn convo between me and sweety. I couldn't give an explanation but simply put - I was planning to buy my bike with the exhaust already fitted to it (a scorpion can) I've now been told by the dealer, they arn't sure if they can fit the exhaust because it could cause problems with the restriction, not only an increase in power, but also problems such as cutting out, running too rich etc (this is what they said) I have no explanation of why they say this will happen, only that they say it will.

They have said they will double check if it can be fitted and, if it can they will happily fit at a discounted price at the first service. (That's free fitting + discount on the zorst)

Anyone know what they are talking about?

I got my bike with restrictors in and a viper can on, and it did run horribly. I had really poor fuel economy and it backfired quite a lot too. Took the restrictors out and it runs perfectly. I think in order to have a race can you'd have to spend a while setting it up, but it really isn't worth the fuel problem IMO if you don't.

[EssexDave]

Has anyone set their bike up with restrictors + after market can?
I'm not even sure if i'm going to keep my restrictors in, good to have just incase, i wouldn't want to have to put them in finding that my bike now runs like a pile of w**k and no stock exhaust to run.

[dizzyblonde]

chris will tell you, he managed to get the can to work with restrictors but had all manner of little fueling problems that went with setting it up on his own....now its fine and runs like stink!

[EssexDave]

Where is this Chris character? I think I need to pester a wee bit :p

[dizzyblonde]

YorkieChris...fiddler of SVs extroadinaire...might be all curvys but hes rather a knowedeable character round bikes full stop

[Dangerous Dave]

so if it comes to court and your bike is making 33.1bhp, you're never going to get convicted as that could be put down to dyno error

Only if you have another reading from a second run which can prove the first is inaccurate, i.e getting one below 33bhp!

As for the laser full system I wouldn't expect much power from that, its technically a half system as you retain the stock front header but it may still tip you over the 33bhp. If you only want to be below 33bhp for one day then stick with the standard pipework, get it dyno'd and then put the laser system on. Safest way to fiddle it.

[yorkie_chris]

Dyno's read over true anyway, could argue that you restricted it so it was fine in the dales ... but at sea level its making more, loads of arguements there. A good brief would tear any case in these circumstances to bits.

It's shakey at best, and still down to CPS, and you've shown the good faith in it being restricted.

However... the usual arguements about informing insurance of modifications still stands.

[adam15]

hi.....some information that would be beneficial to all off you
my experience is...i have just brought an SV650S with a blue flame exhaust which the dealer restricted so that my girlfriend would be able to ride it since it is mainly for her anyway.
However we have just found out and checked with FI international who are the restrictor kit suppliers saying that it must comply with standard airbox, carbueration and exhaust.
Obviously a blue flame is not standard and i enquired into what 'STANDARD actually means for the benefit of the restrictor kit.
For it to meet the requirements and be road legal it has to be either a standard suzuki one or an aftermarket non performance one. And if it is not then you are riding with no licence or insurance for the bike
Thought i would let you all know the legal implications of anything other than standard exhaust while on a restricted licence...and also if anyone has a standard SV650s exhuast they want to sell, let me know thanks

[yorkie_chris]

Fi international talk complete b0llocks the rest of the time, I'm not inclined to believe them now :-P

Aftermarket non-performance, which means what exactly? Insurance companies seem to rate that as adding less than 5% power.

Mine's limited by a throttle stop, so the full race system, shorty can, degutted filter are just making it sound nice and giving an extra dollop of torque in the mids compared to OEM restrictor kit. Still less than 33bhp.

[Stu]

hi.....some information that would be beneficial to all off you
my experience is...i have just brought an SV650S with a blue flame exhaust which the dealer restricted so that my girlfriend would be able to ride it since it is mainly for her anyway.
However we have just found out and checked with FI international who are the restrictor kit suppliers saying that it must comply with standard airbox, carbueration and exhaust.
Obviously a blue flame is not standard and i enquired into what 'STANDARD actually means for the benefit of the restrictor kit.
For it to meet the requirements and be road legal it has to be either a standard suzuki one or an aftermarket non performance one. And if it is not then you are riding with no licence or insurance for the bike
Thought i would let you all know the legal implications of anything other than standard exhaust while on a restricted licence...and also if anyone has a standard SV650s exhuast they want to sell, let me know thanksKitkat is selling one for a curvy - be quick.

[adam15]

Fi international talk complete b0llocks the rest of the time, I'm not inclined to believe them now :-P

Aftermarket non-performance, which means what exactly? Insurance companies seem to rate that as adding less than 5% power.

Mine's limited by a throttle stop, so the full race system, shorty can, degutted filter are just making it sound nice and giving an extra dollop of torque in the mids compared to OEM restrictor kit. Still less than 33bhp.


just to let you know the main thing is that the bike complies with the certificate that states the exhaust has to be standard and although this is a right b***h. it would be even worse if you lost your licence and ended up in court because of it. i personally did 2 years restricted then took it off, spent money on customisation and handling and then after the 2 years started performance upgrades because i like to keep my licence and my girlfriend wants to do the same well keep her licence that is

[sv_rider1990]

Ive got a scorpian on my curvey... Hasnt made it any faster might have made like 1 bhp or something that combined with my BMC air filter probably made a couple of extra bhp not sure for certain, but its only a slip on can not a full system

[yorkie_chris]

just to let you know the main thing is that the bike complies with the certificate that states the exhaust has to be standard and although this is a right b***h. it would be even worse if you lost your licence and ended up in court because of it. i personally did 2 years restricted then took it off, spent money on customisation and handling and then after the 2 years started performance upgrades because i like to keep my licence and my girlfriend wants to do the same well keep her licence that is

No it doesn't have to comply with the certificate, it has to make less than 33bhp.

[Dangerous Dave]

No it doesn't have to comply with the certificate, it has to make less than 33bhp.
In a way, Yes. The certificate is proof of 33bhp to the police and a court, if it states the bike most remain standard then that is the legal statement of the certificate.

Slip/bolt on cans are not performance enhancing exhausts on an SV.

Going back to my previous thread about having a dyno printout...
so if it comes to court and your bike is making 33.1bhp, you're never going to get convicted as that could be put down to dyno error.Only if you have another reading from a second run which can prove the first is inaccurate, i.e getting one below 33bhp!
... this is the only way a court will except that your bike is running at 33bhp or less, the court will not except dyno error as an excuse even though they over read slightly. Sorry chaps.

The best thing to do is have a certificate and a dyno read out (less than 33bhp), this info came from my neighbour who is a high ranking traffic cop.

Update: You need a certificate to produce to a court!

[yorkie_chris]

The certificate is proof of 33bhp to the police and a court, if it states the bike most remain standard then that is the legal statement of the certificate.


Update: You need a certificate to produce to a court!

Not really, all it says is that a restrictor kit was fitted at some point.

What law says you need one?

[Dangerous Dave]

A pompous legal system in court, not exactly a law we know about but they need a copy for the court record and failure to produce isn't a good option. Paul, my neighbour, has recently been involved in such a case. An R6 owner was caught speeding at 142mph on a restricted licence, they guy removed the restrictor obviously.

[yorkie_chris]

But if he could have produced a certificate in that case, then what?

I very much doubt they'd take you to court just over not having a certificate if you've a dyno printout of <33bhp, unless you're caught at +100mph speeds or other such silliness.

[Dangerous Dave]

No what I am saying is if you ever have to go to court you will need a certificate, the old bill aren't to fussed but you have to produce a certificate to a court!