Hey guys

I'm going to a track tomorrow and I was wondering if I can use racing fuel in my C63 with eurocharged V5 tune. Anyone on here used it before ?


Thanks

Yeah. Just make sure it's unleaded. EC will give you a specific tune for race gas too if you ask them. They sent me a 100 octane tune.

Thanks

Going high in Octane (unleaded) is no issue, too low octane rating would be a problem as the engine would pull timing. You will not get much out of very high octane, unless it is very hot/engine gets very hot - or, if you have a supercharger.


I personally am doubtful it is worth paying what - 8.50$/gal? for race fuel. I used it myself though, just to save time when my tank was getting low.

get yourself a can of ms109 and ask eurocharged for a tune to suit you will gain 10-20hp just from the change

What he said ^

On stock tune, same day same conditions (runs a few minutes apart), no changes other than going from Sunoco 93 octane to MS109 I picked up 0.2 and 3mph in the quarter. It works, I don't care what anyones opinion is. Numbers don't lie.

Interesting - do you know why?

I had success using a mixture of 91/MS109 and it worked well. I could tell the response in the pedal and the car just "felt" like it pulled a bit harder on the butt dyno.

It made a hell of a difference using a race tune for MS109 and running pure MS109. Car is an animal. Easily 10-15 extra horse.

If youre going to track it and you have the time to get them to send you a file, do the MS109 tune.

What sort of track?

If you are drag racing, I suppose a hotter tune with race gas is worth some ET, but if you are doing a road course, just use pump gas and save the money.