Octane booster: 91 to 93 or higher?

[mike the snake]

So is it hopeless to shoot for big power with 91 gas? I'm willing to add WMI if it gets me to 350 safely.

Another option is to run a safe 91 lower power map, with another map for 93 or better and add race gas to get to 93 or better, but that would be a hassle.

I don't want to spend 10-12 grand on the whole turbo enchilada and be stuck with 270-280whp.

How many maps can be stored? Can I have a 91 map, 93 map, 91 with WMI, and 93 with WMI?

Originally Posted by pmccut

Cruise control stalk is how you would change maps, if the tuner is able to program that correctly. I spent a long time trying to make my 91 map work (mostly with Visconti e-tuning), but since the rest of the country is lucky to get 93 I didn't get anything that worked well after over a month of trying.

I know there's not much E85 available in SF region. It's readily available in peninsula/south bay.

[pmccut]

Originally Posted by mike the snake

So is it hopeless to shoot for big power with 91 gas? I'm willing to add WMI if it gets me to 350 safely.

Another option is to run a safe 91 lower power map, with another map for 93 or better and add race gas to get to 93 or better, but that would be a hassle.

I don't want to spend 10-12 grand on the whole turbo enchilada and be stuck with 270-280whp.

How many maps can be stored? Can I have a 91 map, 93 map, 91 with WMI, and 93 with WMI?

Four maps afaik.

I don't imagine you'll hit 350whp with a gt28 on 91. Check out King Tut's build if you haven't already. He's pushing great numbers on 93 with high boost on the same setup. Maybe the timing could just be dialed back a bit

[Ross]

get a meth kit, will be the least amount of hassle. have one tune set up with one tune without. mixing fuel can be a real pain, also the mixes need to be consistent.

[mike the snake]

OK, I'm getting complete quote packages together so I can decide on which kit to get.

What about exhaust? I'm wanting to get a solid, safe 350 whp with WMI, and I see some kits have overpipes and front pipes available.

What about tubing size? 2.5" or 3"? Does anyone make a full 3" setup with 3" front pipe and overpipe?

I will probably choose some parts from other than who made the kit. I like the big single titanium catback exhaust, just wondering if I need the pipes in front of that to be 3" as well?

[Ross]

Your highest flow point is only as good as your most restrictive area.