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Author Interesting article about 95ron Vs 99ron: Dyno results.
Tiger
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Registered: 12th Jun 01
Location: Leicestershire Drives:Astra VXR
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6th Dec 09 at 00:05   View User's Profile U2U Member Reply With Quote
http://www.thorneymotorsport.co.uk/content/site/downloads/press-release-full-290806.pdf
Ben G
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Registered: 12th Jan 07
Location: Essex
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6th Dec 09 at 00:07   View User's Profile U2U Member Reply With Quote
see my sig.

quite a difference in bhp, not so much torque.
Tiger
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Registered: 12th Jun 01
Location: Leicestershire Drives:Astra VXR
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6th Dec 09 at 00:08   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Ben G
see my sig.

quite a difference in bhp, not so much torque.


Thats what made me go look for any dyno results
Ben G
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Registered: 12th Jan 07
Location: Essex
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6th Dec 09 at 00:10   View User's Profile U2U Member Reply With Quote
ah ok then.

it did feel faster on the 99 ron, picked up better from low rpm. made it smoke quite a lot though and the cat smelled eggy so decided to change to 95 ron.
Tiger
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Registered: 12th Jun 01
Location: Leicestershire Drives:Astra VXR
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6th Dec 09 at 00:16   View User's Profile U2U Member Reply With Quote
I own a Audi 1.8T and I was looking on the audi sport website. Audi recommend running 98ron because that is what the factory map is intended and running 95ron just makes the car sluggish/reduces mpg.

After experimenting, its very true. On 95ron, my car does feel sluggish. Put a tank of 99 in there and there's a distinct difference so it goes to prove the point audi made about the cars being mapped to 98.
Tiger
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Registered: 12th Jun 01
Location: Leicestershire Drives:Astra VXR
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6th Dec 09 at 00:20   View User's Profile U2U Member Reply With Quote
Oh yeah, apparently tesco's 99 is bad for engines with a compression ratio above 9:1 due to carbon deposits around the valves.
Colin
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Registered: 4th Apr 02
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6th Dec 09 at 00:35   View User's Profile U2U Member Reply With Quote
Only car ive ever had to run on super was my impreza, and only because 95 made it misfire & could have caused k-boom.

M3 drinks Asda's finest & is no different.
Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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6th Dec 09 at 13:44   View User's Profile U2U Member Reply With Quote
mine is mapped on 99 ron so have to use it.
IvIarkgraham
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Registered: 27th Mar 04
Location: Ellesmere Port, Cheshire
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6th Dec 09 at 13:47   View Garage View User's Profile U2U Member Reply With Quote
i can notice a difference between tesco 95 and shell v power

 
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