[rockblock]

I was curious what people are using for high-octane gas in Ontario for Cobb tunes (i.e. Stage 1 Aggressive)

Some say Ultra94 is not really 94, others say Shell V-Power 91 is better than Ultra94...others say add some Octane booster with each 91 fill (Lucas/NOS/Torco)

I am running Cobb v3 N55 Stage 1 Sport and plan to upgrade to Stage 1 Aggressive mode and want to know which is the best gas in GTA that would work with this upgraded tune ?

Thx

[Donutz]

I run shell 91 with stage 2+ sport. A friend runs ultra 94 but he has a stage 2+ aggressive protune.

Edit: sorry I realized you were asking about N55; my comments are about the N54.

[rockblock]

I ran 2 tanks of Ultra94 on both stock & stage 1 sport, but I couldn't tell the difference compared to Shell V-Power 91...I haven't tried Stage 1 Aggressive and I'm curious if it will make a difference with the Ultra94 (which most say it's not actually 94 Oct)

Also, is it worth adding any Octane booster?

[f87.lci]

When I had the Cobb on my E90 (n55) I was told to run only Stage 1 Sport map due to our gas here in Canada. I did try Stage 1 aggressive but felt car was not running as well. I have always found Petro 94 is better than Shell 91 . Currently I have Eurocharged Stage 2 tune and only use 94 petro.

[rockblock]

I upgraded to Stage 1 Aggressive with Ultra94...no turning back for me now...see my comments here:

http://www.e90post.com/forums/showthread.php?t=992809