FUEL:
* I run (BP 98 Octane Unleaded race fuel), 20 liter drum (R 481.00) + Meth: Boost 18Psi max. First gear and second gear limited to 10psi
* When available (Sunoco 104 Unleaded race fuel, 20 Liter drum (R 660.00) + Meth: Boost 18psi. First gear 10psi and second gear 12psi.
When none of the above is available:
* 95 Pump fuel 30 Liters + 5 Liters of Toluene which raise it to 104+ octane + Meth: Boost 18Psi. First gear 10 psi and second gear 10psi.
On all the above the car is very smooth, "happy" and strong.
Other additives when available:
* Mach Concentrated race fuel unleaded. I mix this with 20 Liters of 95 or 98 octane fuel. I always have very good results but the Mach concentrate is scarce. Approximately R180.00 per bottle and can treat 40 Liters. Together with Meth: 18Psi
* NF Concentrated race fuel unleaded. I mix this with 20 Liters of 95 or 98 octane fuel. I always have very good results and the NF concentrate is always available. (NF is about R280.00 a bottle and can treat 40 Liters). Together with Meth: 18Psi.
My other considerations:
* Nitrous: I run with any of the above fuel mixtures but always with Meth (80/20% mix in favour of meth): Boost - 14.5Psi max.
* I never run the car on pump fuel alone...ever. :nono:...If I cant find a mix or money is short...I drive the Golf...:joy:
* For x35 owners...the car is meant to run on 100 octane or higher...:thumbs:
* Not all boosted cars respond the same to fuel mixtures...for some cars it works well and for others it just doesn't...
* Sunoco 109 Ron unleaded (260 GT Plus). Is now in the R700.00 price range for a 20 Liter drum; but it remains very scarce. Car pulls very strong; start up was also quieter and I noticed a drop in fuel consumption from a daily average of 12.4 down to 11.8. I am impressed with this fuel. You can't go wrong with 109 unleaded, you get what you pay for. But in the Cape it is almost never available. If I do get hold of it then I would run 50/50% water meth combination or even less meth. Octane is not an issue on my car when I use Sunoco 109. Boost @ 18Psi. With Nitrous I would increase the boost from 14.5 to 15.5Psi.