God I love 100 octane.

This was with about 2 gallons of 91 mixed with about 8 gallons of 100 octane.

25psi, 3rd and 4th gear pull. Clean as a whistle and smoother then even my knock-free 91 octane map.

Next tank of full 100 octane and when I get my wideband back in the car is when the real fun begins. See what timing and boost I can get out of the car then.

I do notice the MPH/Speed is logging very oddly with big chunks of constant numbers in the newest EvoScan.

 

Nice. Just and observation based on the NB, but it looks like you're mapped a little rich right now. Course if its not knocking and feels good, I spose leave it alone.

 

100 octane definitely makes a difference. I tried it for my first time last week end at the strip and love it. The tip of my exhaust was white instead of black. The car was smoother and definitely felt a lot stronger.

 

Hey John,

Yea I haven't touched the fueling yet since I don't have the wideband hooked up in the car right now (rewiring ECU+ harness, etc)

That's next.

 

You dont run that much timing on pump do you?

 

No, this is 100 octane like the thread title states.

Up top I do however run those numbers. I haven't tweaked the timing up top yet. Waiting to put my wideband back in.

 

lol have fun.

 

How much timing do you guys generally see under full throttle? I think the most I am logging right now is ~15 on 93 octane....Thanks

 

The IX's run much lower timing then the 9's. 15 is pretty high actually for a IX. Last 4 I have tuned are about 13 up top.

 

Interesting on the VIII vs IX timing....On 93 octane I think I can get even higher than 15 degrees up top as my current tune has no knock....I cannot wait for a custom tune at the track from Jestr....Hopefully by then I will have a Meth/ ALK kit and a good wideband.

Back on topic -- your map must be fairly rich if you have no knock between shifts right? In fact, you have no knocks throughout?? If you are setting up for the track, is there an optimal point of power / reliability? Have you seen some knock and then either changed AFR or timing to get this conservative? Also how does your log look if you do a few laps at a track (high rpm, rolling throttle, etc)? I noticed a difference with my logs 2000 - 7200 rpm full throttle vs. back roads full throttle, brake, roll throttle, full throttle, etc...

Finally, are there a lot in folks in Cali running METH / ALK to get boost 91 performance?

 

Why would the car knock between shifts?

I am just now starting on this much more aggressive 100 octane tune. In the past, I ran 25psi with 100 octane on the track at about 11.5 AFR but not with really aggressive tuning. I'm actually going to be dropping the boost a bit for my new track tune. However, this current tune is going to be my high power fun tune.

Yup, this is how I tune my car, lots of logging, lots of tweaks. A masterpiece takes some time.

You would be surpised at how little people are playing with Meth/Alk here in California compare to mid west/east coast.

I think there is a certain love/hate relationship with 91 octane. eeking out alot of power with **** water is a pain in the *** but when you do, it feels like a great accomplishment.