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Speed Limiter?????????????
Moderators: WR 1mposter, The Swede, Megaman, danr55, WR1 Bro
38 posts
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Speed Limiter?????????????
A friend of mine in his WR1 had a bit of a blast the other night. On a straight flat road his speedo read 160mph, his Origin read 144mph. I was wondering if these cars really have a speed restrictor or not, I was always lead to believe they have, set at 155mph. But the above car kept accelerating, it would have gone a fair bit faster apparently, but ran out of road. Does anyone know if there is a limiter?????????
Rumoured to be set at 152mph. I would tell your "friend" to go by the Origin reading.
I thought they were limited to 155 mph as well. I'm a little surprised the speedo and B2 were that far apart though.
Don't be surprised Chris, it's a 10% inaccuracy, it's what's expected.
Haven't maxed the car out but the B2 reads approx 4mph out at normal speeds of 60-70mph. Faster speeds seem to show a bigger difference.
my snooper takes a bit to get to the reading on the dash, always trying to catch up.
OK I'll tell him, but from what I've heard there doesnt seem to be a limiter. Sumo.
> the B2 reads approx 4mph out at normal speeds of 60-70mph
You mean the opposite no doubt? The B2 is right and the speedo is "out" by approx 4mph. I've got a B2 and a Garmin Quest navigator. Both consistently read within 0.1mph of each other and the speedo always reads approx 5% faster. Not ideal but a lot closer than the STi I had before, I think the 18" wheels and no re-gearing are responsible for this improvement. You have to hold the speed for a second or so though as the GPS devices have to receive the signals and then do the calcs before displaying the answer. Great when you're cruising on the motorway, OK for top speed but no good while you're accelerating. Edited to say I don't think there's a limiter either. I've seen 152mph (GPS max speed recorded) in an STi with PPP, private road of course, and that was virtually on the limiter in 6th, speedo read well over 165mph. If the WR1 is geared the same then the extra 20bhp wouldn't help, you'd still max out at the same speed. If there was a 155mph limiter then would it be triggerd by the speedo (ie cut when the speedo reads 155mph, real speed more like 145mph) or would it be generated direct by the speedo pulses and cut at a more accurate number than that displayed by the speedo? The latter I suspect.
Having redone the maths in the cold, sober light of day, i'm not surprised, just wrong with my post last night! 
The Road Angel said 152mph, with the rev buzzer going off at 6000rpm. The speedo was well off the clock long before that speed though.
So I guess with a little bit more private road 155mph is easy!
Yes absolutely! Sorry poorly phrased For some strange reason I feel like I'm back at school
Galaxian - Sorry didn't mean to criticise, feel free to take the pointy D hat off and leave the corner...... I always seem to come across all superior and critical when I type but I don't mean it honest.
I didn't know how much you knew about GPS and some people seem to have a unswerving belief in the accuracy of the speedo despite all the evidence to the contrary. I find the technology of GPS really interesting and never miss an opportunity to try and convince others they're the greatest thing since sliced bread.
I quite agree about interesting subject matter.
The best thing about GPS devices in the car means you can actually drive that little bit faster because the speedo isn't accurate. 
No offense taken m8. After reading my post again I realise it did sound like the GPS wasn't accurate. Jaycee: Agreed, It's nice knowing the speedo is a few mph more than actual speed. I can only apologise to Sumo for completely turning his thread into an Origin B2 / GPS accuracy thread. No one seems to know if the WR1 is restricted or not.... hmmmm.... I don't think I'm going to find out personally anytime soon
The speed limiter is set within the ECU to it's maximum value which is 255kph. As the ECU sees road speed from the gearbox and this is somewhat more accurate than the speedo, it is possible to see the needle going off the end of the clock but the speed still increasing. The only place in the UK we can test this is Millbrook though or on the dyno, both of which feel a little scary when we do it...
Mike
In reply to Mr Woods comment on ` scary at speed ` before I had the advanced wheel alignment carried out and the change of tyres to F1`s
I never went over 125mph coz it just didn`t feel right. It was skippy and didn`t feel surefooted On that private road where I said the speedo had long gone past it`s maxamim of 160ish and I was actually doing 150/151, the car was a different animal Ok it still felt like a brick in a windtunnel coz of the shape, but it now felt safe mile after mile at that speed. A completly different car.
My car set up is as i received it, other than the afterburner exhaust. I always feel that car is sure footed. Regulary travel at 130 and some times above.
On a certian private raod, between Eversham and towards Birmingham, speedo read circa 160, at this speed however I was not looking to long at the dial! , but I have a SECS data unit that read peak speed 153. I felt that there was more left in it but the road started to bend so had to slow down. What I do know is that a M3 trying to follow, was going backwards
Were the flashing blue lights left behind as well?
Too petty to be a traffic warden...
if i am ever in that neck of the wood andy, you will have to take me down this road.
It sounds like one hell of a private road!
Too petty to be a traffic warden...
Lee
Whilst the ECU stops play at what it thinks is 255kph, there is a very small over-read in the gearbox speed signal which means that it really is 155mph. But hey, what's a couple of mph at that speed?!?! Mike
Off the clock
I live over in germany and on the autobahn i have had mine off the clock round about the "m" of mph and there aint no limiter but i think that is due to the 10% inaccuracy at higher speeds prob never got up to 155 really. Was fun and a bit scary though! At very high speeds it looks as though the scoop is going to pull the bonnet off!
Re: Off the clock
Sounds good to me  155 it is then !!!
You are all nutters. I've never taken my WR1 above 70mph (on the speedo). Do you know what damage you could cause to yourselves and others? Maybe instead of track days someone should organise a course showing the potential consequences of your irresponsible actions. Life is short as it is and playing with other peoples lives is not big and it certainly isn't clever. Nuff said!
Where is this road you talk of? Campaign for traffic calming already actioned!
What is the point of having a car like a WR1 if your not going to go over 70 mph. Seems silly to me. I would not do 155 over here like, but on the autobahn with no speed limits why not see what your pride and joy can do.
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38 posts
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