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robinjames

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Hi Stephen, (Stephen Jory)

I have forgot the tuner you said was brill located in the Midlands area.
Can you give methe details again please.

Many thanks

Robin
 


Thanks Helen,

I have just been on the phone to Chris. He hasn't a rolling road but he has asked me to contact Bob Watson near Bicester?

Have you heard of him?

Robin
 
Bob Watson is known as one of the best for tuning on his rolling road.

what is it you are wanting to do and what car?
 


Hi Jason,

I have a 993 Targa and want to know if I have lost any BHP by putting the car on a rolling road.
If it has I want to get the car back up to 285 BHP

Robin
 
Might be best just getting it on a rolling road and checking first. There is a good one over loghborough way called scoobyworks or similar. They do a lot of tuning. And you cam do a dyno run only for about £50
 
Hi Robin,
I think I got it wrong with regards to the Midlands area, but have a look on page 2 of the 993 Register on here and look for the comments about Chipwizards / Wayne Schofield.
Kind Regards
Stephen
 
What a good idea everbody for a R8 meeting at the rolling road count us in, Does anyone want to make further enquiries and fix it up or pass details to us and we will arrange everything many thanks.
Tom
 


How about Scoobyworks at Loughborough?

I am using their rolling road. I could enquire about a club visit? See their reaction?

Robin
 
Hi Maggie and Robin
Good idea, please ask while you are there.
Cheers
Tom and Kerry
 
I'm afraid a rolling road dyno is not a good measure of actual engine BHP. They all read differently and you can't trust the figures they produce. They are good for comparative measures e.g. determining how much extra BHP you've got before and after a mod, but for a one off measurement they are not to be believed. Only an engine dyno can do that. A rolling road measures the HP at the wheels and makes assumptions about drivetrain losses to estimate crank HP - which is what your 285bhp is. Also there are variations from car to car depending upon how hard a life it has had, the condition of your gear box, clutch, the nature and properties of your tyres, the weight and inertia of your wheels etc.

Having said that the plots you get out are interesting and can tell you alot about what's going on but if the dyno says you're, say 10bhp down, then that figure is not necessarily accurate.

On the 944 forum there are some dyno days that have been arranged over the years. The dyno of choice closed down a few years ago and they've since been using a different dyno, and the reading from both dyno's for the same car are very different - can't remember by how much, but I seem to remember it was significant - i.e. not just a few BHP.
 

ORIGINAL: sawood12

I'm afraid a rolling road dyno is not a good measure of actual engine BHP.
Click to expand...

They are by far the cheapest and most useful way of getting an idea of your cars power curve though.

Especially if you return to the same RR when checking.

They are also a good way in comparing your car against similar others when a group of cars all attend one RR session.
 
I agree, as a comparative measure they are very good, but the OP wanted to establish how many BHP's his car is producing compared with new and tweak it accordingly - for this purpose a rolling road is not accurate.
 

I wonder how much an engine dyno costs?

The rolling road is £58 for three comparisons.

Any ideas folks?
And more importantly who to go to?
I was going to use Bob Wilson.

Robin
 
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