The 33bhp restriction (new question dont think its covered)

[ScottishRawker]

I have a question which when i searched i couldnt see that it had been asked before,

as im one of the unlucky people to have to be restricted for 2 years, and im picking up an k5 sv on sunday.

i have read that some aftermarket exhausts give extra horsepower, and things like time retard eliminators all help the horsepower run to its best,

so if i have a bike with the 33bhp ecu chip, and add an after market exhaust that gives extra bhp and other mods to make the bike run better and more powerful, will that actually put the bike over 33bhp? or cause of the chip will it not go above 33??

sorry if it has been asked before, and sorry if it seems a daft question.

Thanks
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[Baph]

Not sure, but if it does, it will only be a few bhp at best.

I reckon you wouldn't be able to push it up to even 40bhp.

The SV has no lambda sensor, so I suppose that with better air intake & exhaust outlet, the ECU wouldn't know the fuel/air ratio, so it couldn't do anything about a different exhaust.

[svdaz]

makes no difference at all as its restricted via the cdi / ecu which controls the amount of fuel the fi recieves. so no need to worry about your restricted licence (anyhow no one checks anyway ) :)

[creamerybutter]

Like mentioned it won't really make that much difference and the police won't measure the exact power output anyhow. You should have your proof there is a restricted ECU in there so you will be fine.

[DanAbnormal]

I have no idea as to the technical know-how but unless someone told me (and could prove it) that it would not affect the final bhp I would not risk it. It's 2 years and not worth the potential hassle in my book. Wait until you're unrestricted and then go for it!

[ScottishRawker]

thanks guys for all the input,

will prob keep everything standard for first 6months/year then maybe a new exhaust but not try and raise the bhp till im unrestricted.

[Alpinestarhero]

You could fit everything, then get it restricted. Surely the ECU is fine-tuned to make sure the 33bhp is met?

My bike is restricted, its still very fun so dont worry about not having as much power, you'll still have ha cracking bike!

Matt

[ScottishRawker]

im picking up the bike restricted,

good to hear its "very fun" cause from reading other peoples posts i was slightly worried that it wouldnt be much better than a 125.

so i guess it will getup to 85/90 no problem then will tail off? or is it better than that??

[Alpinestarhero]

The bike will go on to probably over 100, but i havnt bothered to find out.

The fun part of the engine is between 4000 and 8000 rpm ,this is where the torque lies and where i keep the bike running. It'll pull you outta corners very well and keep you entertained without causing any brown trouser moments!

Matt

[Wideboy]

I know this thread is dead so sorry for bringing it back up as i am a newbie (says it all)

had my sv650s for a week and getting it restricted in 2 weeks my friend who had one as his 1st big bike said that when his was restricted to 33bhp his was still pretty nipping (knowing him he probably on had it on a couple of days) and said that a rs125 derestricted could keep up with it until 40mph when the sv pulled away if so could some one give me a rough guide to how quick it will go as i have been riding a Yamaha sr125 for that past 1 1/2 year;)

cheers

[Rich]

I've been up to an indicated 110mph on my restricted SV,, has all the power you need mate.. Just ask the guys that i went out for a ride with on bank holiday monday, they didn't notice and definatly didn't leave me behind!!

I've got a micron delta+ on my SV and it's the best thing i've brought for my bike, aslong as you don't ride like an @rse you won't get noticed.

[Wideboy]

ok cheers my friend has r6 full power i think i can persuade him to wait for me :rolleyes: as long as it can blow away all these chavs on the rs125 im not bothered

[Rich]

ok cheers my friend has r6 full power i think i can persuade him to wait for me :rolleyes: as long as it can blow away all these chavs on the rs125 im not bothered

Easy mate, bottom end isn't much different from full power. On the dyno chart the full power SV reaches 33bhp at about 5000rpm so past 6000-7000rpm it gets abit breathless on 33bhp but just quick shift and you won't notice. That is until you mate on the R6 breaks the speed limit..;)

[Wideboy]

cheers for the help like to know what im in for before i take her out on the road have ridden it on private land so sort of got it

[Girth]

i went from a derestricted nsf125 to a restricted sv650. Power diff is there, is a lot quicker, tails off at around 75-80 but capable of 110 but take a lot of work i've heard, lol.

I went out with a couple of guys last weekend on full powered sv's and i had no problem what so ever keeping up with them, well BluePete was a quicker rider, so was hard to catch!

I'm sticking a new can on new month so i wouldnt really worry about the bhp change.

[dizzyblonde]

Remember, once your ready to de-restrict it......it will still be registered legally as restricted.
When I bought my black one the guy handed me the certificate and the kit....I wonder how long he had it restricted for????????????

[ASM-Forever]

Whilst its all well and good to egg him on, with regards to derestricting early, is it really worth all the potential hassle if you do get caught.

Alpinestarhero/1RichSV650 seem to be getting on fine with their respective restrictions and i have respect for them for sticking with it. Personally if your on a restricted license then stay that way....if it bothers you that much then do DAS....if your too young then tough. Restricted SV is better than than the scooter/125 you came from.

Anyhow the first mod i would do would be to sort out the suspension....makes the bike alot more rideable and invariably quicker because of it....doesn't invalidate your insurance either!

[Stu]

I have no idea as to the technical know-how but unless someone told me (and could prove it) that it would not affect the final bhp I would not risk it. It's 2 years and not worth the potential hassle in my book. Wait until you're unrestricted and then go for it!
Contrary to that, I would say don't let it put you off changing the end can if you want to - they never give bhp gains unless it's a full system.
no point doing other mods to try & improve hp though - flogging a dead horse there!

Edit - at ASM don't see anyone egging him on at all? :confused: has someone deleted a post?

[dizzyblonde]

My last post was only meant a little lightly intended. Although the story is true
I do agree with what you say as I have never had the bad fortune of having to ride restricted. Very frustrating i could imagine, as the two years probation period you have is bad enough for not getting points and the rest, but better safe than sorry or with trouble from your local plod.
I shall now go and tell myself off.

[Wideboy]

well im defiantly going to stay 33bhp till im 21 as im going from Yamaha sr 125 to the sv650s (enough said) plus i don't want to take the risk of getting caught

plus do you guys think its worth putting a race can on it as i have the carburetter model so don't know how this would differ from the injection models when restricted

[Baph]

Easy mate, bottom end isn't much different from full power. On the dyno chart the full power SV reaches 33bhp at about 5000rpm so past 6000-7000rpm it gets abit breathless on 33bhp but just quick shift and you won't notice. That is until you mate on the R6 breaks the speed limit..;)

Funny that. On a bimble I'll short shift, usually changing gear around 5-6k rpm.

On a blat, I try to keep the bike up near 8k as it's just so much easier to ride agressively up there.

Mine's not restricted. Sorry. :oops:

[smegmunky]

No idea on the differences between EFI & carbed restrictors, but my k6 at 33bhp beats my uncles 500 (straight line) untill 30mph & I can get ahead in the corners cos its so agile. Racing the R6 is a lost cause, but below 60mph you'll be fine, was keeping up with a gsxr (guessing he wasnt quite giving it full stick) in the bendies, and my sv still goes above 120mph so on a nice loooooong (and i mean long, takes forever to get there) straight you can get up there.

I was whipping the **** off a pair of impreza's about a week ago, untill the bypass & they hit 100mph, then they were gone :(

[Wideboy]

lol

[Flamin_Squirrel]

Racing the R6 is a lost cause, but below 60mph you'll be fine, was keeping up with a gsxr (guessing he wasnt quite giving it full stick) in the bendies, and my sv still goes above 120mph

uh uh :rolleyes: