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Hello,

I was wondering if octane booster can be used safely in the RS6. I have a few bottles of NF Race formula from my old car, and I will be travelling in areas where I may not be able to find super unleaded.

Has anyone used it, and if so, how much?
Maximum strength will be +6 RON, which I'm sure is ok for 95 RON NUL... but what if I use it with Tesco's 99 RON? What is the maximum RON the ECU can adjust for?

Thanks.

I have run my RS6+ on Race/Rally fuel which is 107 octane with no problems. The ECU adjusted okay and the performance went through the roof. However, the price makes it impractical to use on a day to day basis.

mwcltd wrote:I have run my RS6+ on Race/Rally fuel which is 107 octane with no problems. The ECU adjusted okay and the performance went through the roof. However, the price makes it impractical to use on a day to day basis.

hwo much is it? and where can i buy some?

hwo much is it? and where can i buy some?

Speak to jr (send a pm to johneroberts) - he might have some stock left at attractive prices.

Nige.

Rupert,

Have you tried any booster yet ?

Demon wrote:Rupert,

Have you tried any booster yet ?

Yes, I tried one bottle per fill up with 97 ron super when I had the chance to put my foot down. The rest of the time was mostly cruising at a constant speed getting nearly 25MPG

Can't say I noticed much difference, although some will say OB will need to be used for X number of fill-ups, I was mainly using it to protect the engine against knocking if the petrol was low on RON.

Rupert wrote:
The rest of the time was mostly cruising at a constant speed getting nearly 25MPG

25 mpg, you must have been driving slow

I take your point with the booster, that's why I'm happy for you to be the guinea pig

Slow indeed! If I keep the cruising speed down to around 85 I can get 25mpg.