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General => The garage => Topic started by: sjw on 18 October 2019, 11:16

Title: JB4 and fuel types
Post by: sjw on 18 October 2019, 11:16
In the US, the JB4 recommends 91 octane for Map 1, and 93 octane for Map 2. Does that translate into 95RON for Map 1 and 99RON (Super unleaded) for Map 2?

Thanks, and sorry if this has been covered before

Edited - f'ed up the original post.
Title: Re: JB4 and fuel types
Post by: barrym381 on 19 October 2019, 22:36
Run super unleaded using either map
Title: Re: JB4 and fuel types
Post by: hog_hedge on 20 October 2019, 08:08
93 USA translates to 98 RON UK so run either Tesco 99 or V Power for both. You should never run 95 on a tuned car.
Title: Re: JB4 and fuel types
Post by: sjw on 21 October 2019, 09:24
Ok thanks. Just realised I butchered the original post. It should have read 91 octane for map 1, and 93 for map 2.

What I was really trying to deduce was, is our 98/99 RON over here good enough for Map 2? And if I happen across a petrol station that doesn't have 99RON, and only has 95, would I be able to use map 1, or should I revert to stock?