Scooby-doo97

iTrader: (1)

Would it be ok to put Optimax in the above car?

Cheers in advance.

ben j

yea if u wanna waste money

Gastro

And not if its a diesel
If its a 620 ti - then you may get some increase in bhp with optimax.

Gastro

Scooby-doo97

iTrader: (1)

Gastro - Yes, mine is the turbo version. Thank you for the info.

ben j

ah u never said that, but then again the car is uk built for a uk market so will be mapped to run on 95-97 octane anyway so it probably wont help at all apart from still waste ya money

www.GT4oc.com

Wont make much difference to a UK car.

Jap imports benefit as their ecu's are mapped for 101ron fuel.

ALi-B

iTrader: (1)

Depends if it has a knock sensor, I know a 820 Turbo has one, don't know about a 620ti, but it should have.

Either way, it always starts off at the maximum mapped ignition timing advance and retards when knock is sensed, and automatically re-advances when it ceases.

Question is if the maximum ignition advance limit is set for 95 or 98 RON

What fuel the factory ignition timing is set for will be in your owners manual....I suggest you have a look and see what octane levels it reccomends

16vmarc

If your car has a knock sensor you are going to benefit. Also you say your car is a turbo, which as we all know is what Optimax was designed for...