What brand and octane are most using for your race file tunes on high boost (1.2 bar & up). I am in Northern Ca. and can get most brands and octanes. I was told no leaded as it will ruin the cats.
I spoke with Todd at Protomotive and he recomended VP103 unleaded.
What are you guys out there using.
Advice please.

 

VP race fuel. MS109 for most boost levels, and C16 for bigger boost.

 

VP MS109 and Sunoco 260 GT Plus

 

MS 109 up to 1.6 bar. Damn Mike how much more boost is needed for C16?

 

You know...BIG boost...geez...1.6 is still pump territory...

 

VP MS109 will be fine for most "street cars". C16 is great with custom tuning (Big Boost or extra timing).

 

mike,
does race fuel actually help when you have meth injection ?

thanks,
brian

 

I run ms 109 pretty much at all times

 

vp 109

 

I cant stand giving up $$$ to that Rip off VP.. Overpriced fuels.. 2.20/gal E85.. Of course you need the fuel system to support it and tune..

Mike

 

depending on what set up you run the fuel does change... hence, if you run only a 18g set up with a greddy on a 5 bar 100 or 104 octane will be fine for 1.3 to 1.35 bar... no need for more expensive fuels as the added octane will not help you with the maxed out fuel system.... However, if you have a dual pump /injector upgrade etc then the higher the octane generally speaking the better the results....
markski

 

Yes, but for me, not enough to waste $10/gal fuel driving around most of the time. On the dyno, the difference between pump-100% meth and MS109-50/50 was about 25whp and about 25-30wtq. I'm sure the more boost you run, the more of a difference it will make. I am running 1.3-1.4bar.

 

im running 1.3 to 1.4 bar with 50% meth on pump gas. im not sold why i would want to run race gas ???

 

Paulie you are running 1.6 bar?!?!

 

Ben not me, i'm sayin some people run up to 1.65 on MS109. I think we both know of whom I speak.