Is there a big difference between the two? I only ask because I am going to the track this Friday and plan to run the race map. Its $70 for a 5 gallon can of 104 or $9 a gallon for 100.
Do you have a tune and switching?
No mfer, I am just going to dump race gas in my tank and run my imaginary race map in my head. Hoping for high 10s.
Fingers crossed!
lol. so much fail today. it’s hard to believe.
I suspect there is a huge difference between these two. If you want to post a hero time, get the 5 gallon can. If you want to post 12’s, go with the $9/gal pump.
skywagon it was a dumb question. RTFS.
depends if his race map is 100 OR 104.
No it doesn’t. I think you’re giving skypilot credit that he doesn’t deserve
Skypilot was asking if he was tuned first (vs. stock) …then was asking if he had program switching to select a race tune.
He wasn’t asking ‘do you have 100 and 104 maps programmed?’ (although he’ll assuredly pretend that’s what he was asking now)
and here was his reply after D.P. slammed him for asking a dumb question…
No mention of ‘I meant do you have a 100 or 104 race map available’ etc. Just dumbness.
So to answer your question d.p if you have a 100 map, there is no point on running 104, if you have a 104 map, yes its worth it. Think of it as the same change 91 peeps have compared to 93 octane, there is much to gain when your car doesnt knock and pull timing.
Great thanks man. I believe GIAC stage 2 is 104 map so I will go that route. Austin said 100 + E85 would work as well. 5 to 1.5 ratio.
+1 karma for any wire reference 
This is crazy. Can we please get. Back to the 100 vs 104 thread. I’d like to know if the 4 octane points makes a marked improvement and why.
I think that there are other dimensions besides octane, as fuel is marketed to us. That MS109 fuel makes silly numbers on stock S4’s and turbo MB/M3.
Back on topic: in same conditions, how much difference would the 104 vs 100oct give you? Switching to the appropriate file, of course.
I’ve been on the fence about getting the 104 file from APR for some time now. With the 100oct tune, I’m stuck at pretty much 12 flat, consistently. Really want another 6MT in the 11s…
Ps: thx again for the laughs Skyfart, also looking forward to your 1/4 mile results this Sunday 
might even see u there. Ever think about driving to www.fayettevillemotorsportspark.com ?
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The hole in the hood is a lot more tasteful than I pictured it could be. I don’t care for the low Audi rings.
GIAC race map is tuned for 104 so that’s what I am going with.
Going to try my best to get into the 11’s on Friday.
because trial lawyer . . .
I got a 5 gallon pail of Sunoco 260 Gt plus which is 104 octane. Anyone know if a VP fill hose works with sunoco 5 gallon cans?