SAL
Premium Member
Registered: 19th Dec 05
Location: Radlett, Hertfordshire
User status: Offline
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imo, it seems weird that everything that goes on them gets stupid high results
for example: this month in total vaux mag there is a tigra 1.6 with induction kit  and a zorst how the feck can that make 117 !
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Marc
Member
Registered: 11th Aug 02
Location: York
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Didn't Mavs old 1.6 make 118 with filter and exhaust?!!! 
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Robin
Premium Member
Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
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I like the 70bhp '1.2' 8v
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Robin
Premium Member
Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
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quote:
Originally posted by Marc
Didn't Mavs old 1.6 make 118 with filter and exhaust?!!!
If it did, I spent £50 for every extra horse power over that 
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Marc
Member
Registered: 11th Aug 02
Location: York
User status: Offline
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Up to how much bhp?
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Robin
Premium Member
Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
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130
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Marc
Member
Registered: 11th Aug 02
Location: York
User status: Offline
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Maybe it was his cold air feed 
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PaulW
Member
Registered: 26th Jan 03
Location: Atherton, Greater Manchester
User status: Offline
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i also made 117 with filter & cat back system on 2 seperate RR's in the GSi...
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Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
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theres lots of variables with RR that people dont realise, compensation figures, air temp calculations, barometric pressure fluctuations, wheelspin etc...
for example, we had a RR day today at Vsport. 1 car made 3 runs at 260 bhp, then next run it made 285.
why?
because the intake air temp probe had slipped out and touched hot metal. the dyno thought that the intake temps were high so compensated the graph to show a higher (false) figure. its usually obvious to an operator though but can be missed if not being watched closely.
In much the same wa most dynos vary hugely, the closest modern dyno to us consistently makes 8% higher power figures than ours. why? well because its a different dyno from a different manufacturer that calculates power differently using a different method. they had a new MX5 on the other day that was bog standard, it made 14 bhp over the book figure. on ours it made 3 bhp under 2 days later.
remember a dyno isnt a tool to calculate just power, that is just the end product.
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SAL
Premium Member
Registered: 19th Dec 05
Location: Radlett, Hertfordshire
User status: Offline
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quote:
Originally posted by Robin
I like the 70bhp '1.2' 8v
yes and the 1.2 16v turbo that get 180 ? regals figures confuse me
on another note they reckon YOU will see 30 bhp from the dblias inlet jobie...that seems alot for an inlet IMO
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Robin
Premium Member
Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
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Dave, that's true, but it seems that their figures are all inflated...
Customer goes in with a standard Astra GSi, no before graph, has a remap, walks out with 280bhp on a bit of paper, thinks "wow, 83bhp" when the car would have made 220 beforehand on that RR, customer goes on the net and advises others to go there.
ALL the figures in TV this month are over what the book figure is, but people don't question it. You had an argument about a certain places claims I seem to remember, when you said that you wouldn't gain 17bhp on a standard, N/A car, just from a map, and that their RR was wrong, this is the same.
[Edited on 16-06-2007 by Robin]
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IvIarkgraham
Premium Member
Registered: 27th Mar 04
Location: Ellesmere Port, Cheshire
User status: Offline
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if i was to get any serious modifications i would want a rr done before and after
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SAL
Premium Member
Registered: 19th Dec 05
Location: Radlett, Hertfordshire
User status: Offline
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im glad people might start to see that regal have hidden depths...
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Robin
Premium Member
Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
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It's not just Regal Stavs, I think a lot of places are probably like that TBH 
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Fad
Member
Registered: 1st Feb 01
Location: Dartford Kent Drives: 330cd
User status: Offline
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quote:
Originally posted by Stavs
im glad people might start to see that regal have hidden depths...
They are wankers but I am not allowed to say this on AOC
You want to see some of the shit power curves people accept after paying some serious money and then after reamp they have to pay extra to get their cars on the rollers
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Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
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yes Robin, I agree 100%.
some companies rely on big figures to keep customers happy. I use my dyno on the basis that I would rather it under read by 3% (what dyno dynamics are set to it seem, and the general feedback from the owner network of dyno dynamics)
I dont care if mine tends to under read, I like the fact that I can do 10 runs in a car one day, get all runs to be within 2 bhp of eachother, leave the car for a day, do another 10 runs and have the same results over again. modern dynos (dyno dynamics, dynojet etc...) are starting to become the industry standard, before long the old inertia dynos wont be used by anyone as they just arent close to being repeatable and throw up some interesting power figures.
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SAL
Premium Member
Registered: 19th Dec 05
Location: Radlett, Hertfordshire
User status: Offline
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next question is...could places like regal make the figuers up ? i mean is there ways of the dyno giving over figures ?
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Robin
Premium Member
Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
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Depending on the type of dyno, yes. You can make certain ones over-read by touching the brakes on coastdown IIRC.
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Steve X16XE
Member
Registered: 31st Dec 06
Location: Barnsley, South Yorkshire
User status: Offline
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quote:
Originally posted by IvIarkgraham
if i was to get any serious modifications i would want a rr done before and after
Thats what i'm wanting to do. So i could walk out of a RR day do some mods and go back to the same place and see the increase.
For example if i went to Well Lane and had my car on the rollers and came out with 120. Went away and did some mods. Go back and then my car did 180.
Isn't that the same as if i went on Dave A's rollers and got 110 1st time round, then did the same mods and went back and it did 170.
Isn't that better to gauge what i have gained and wouldn't both rollers increace the same?
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Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
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making them over readi is stupidly simple in most cases.
Modern dynos have something called 'shootout mode' which locks the operators ability to change anything. we use that on all of our RR days. all of the important settings are actually printed on the bottom of the graphs, if someone posts it on the net and another dyno dynamics (DD) dealer sees that you have massaged the figures in some way (which is easy to spot) then you could lose your operating licence as an accredited DD operator.
things are far stricted in australia and the US and all dynojet and DD machines are hooked to the net 24/7. they are constantly uploading new stuff and being calibrated, fiddle a figure and you can be sued!
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Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
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quote:
Originally posted by Steve X16XE
Isn't that better to gauge what i have gained and wouldn't both rollers increace the same?
not necessarily. some rollers give repeatable results, others dont. some (the more modern ones) have built in weather stations, older ones dont. Basicly find somewhere with a modern dyno, more and more dyno dynamics places are opening up, they seem to be becoming the one to use for repeatability and accuracy.
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Steve X16XE
Member
Registered: 31st Dec 06
Location: Barnsley, South Yorkshire
User status: Offline
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Plug here for you Dave.
How much for a power run?
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mav
Member
Registered: 19th Jun 01
Location: Scotland
User status: Offline
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quote:
Originally posted by Marc
Didn't Mavs old 1.6 make 118 with filter and exhaust?!!!
My 1.6 sport with full magnex and decat with ind kit and cold air feeds and heat shield, well serviced blah blah made 117bhp on 2 different rollers, on 2 different days..which is about 8 or 9 above standard..
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Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
User status: Offline
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quote:
Originally posted by Steve X16XE
Plug here for you Dave.
How much for a power run?
£30 for a bsic run, £40 for a more in depth run with afr graphs etc we have a dyno open day again next saturday.
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Steve X16XE
Member
Registered: 31st Dec 06
Location: Barnsley, South Yorkshire
User status: Offline
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Do'h. I'm off to birmingham next sat. Bet your closed on sun.
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