[aps]

Originally Posted by thejeremyman9

If you are in LA area as indicated, there is E85 all over the place... Check out pearson fuels app and/or the other E85 station finder websites. That is probably your best bet and you will likely only need 2-3 gallons per tank to clean up the timing.

If you really want to stick to 91, costco is generally the best.

Yeah - will have to try Costco out again. I used to go to them only, but then was told that their fuel quality isn't as good as Shell/Chevron (both of which are closer to me now anyways).

Have never used ethanol - what are some general rules to know about that? Is it fine to use with stock fuel system?

[TR-8R]

Originally Posted by aps

Yeah - will have to try Costco out again. I used to go to them only, but then was told that their fuel quality isn't as good as Shell/Chevron (both of which are closer to me now anyways).

Have never used ethanol - what are some general rules to know about that? Is it fine to use with stock fuel system?

I have absolute shit fuel up here in Vancouver. In the past, I would add roughly 3 gallons in on a full tank. No e30 map just running the 91oct with better fuel.

Pulled harder, smoothed out my timing, removed knock. Going to start doing it again.

[thejeremyman9]

Originally Posted by TR-8R

I have absolute shit fuel up here in Vancouver. In the past, I would add roughly 3 gallons in on a full tank. No e30 map just running the 91oct with better fuel.

Pulled harder, smoothed out my timing, removed knock. Going to start doing it again.

Yeah, basically this. Based on others experience i have seen, you can start with 2 gallons of E85 and fill the rest with 91. Log before and after on the same map and you should see timing improvements. Note it might take a few miles to mix the tank and get the mix up to the HPFP, so drive a bit after you fill before logging. You just need to keep track of how much E85 you add relative to 91. Every once in a while you can run through a full tank of normal 91 to "reset" your ratio. Although E85 has a lower energy density than gasoline, mixing in a few gallons in a tank is only a small change in the required fuel and your STFT can easily compensate that few % even when you are on a non Exx tune.

Its fine with stock fuel system. Really the only limiting factor for a FBO car is the HPFP if you go to a relatively high Exx ratio (say, E30+) and are in cold temps (<60F). At that point you just reach the limit of what the HPFP can supply. But just mixing in a few gallons and running a 91 octane OTS stage 2 tune shouldnt put you near that limit, unless you are in very low temps (<30F).

[aps]

Alright - so I was able to flash the TCU and got a bunch more logs now. Stage 2 ACN 91, DSC off, Costco gas this time around.

Seems like my timing is only a little better but still pretty shit. Still getting knocks right around the time when I first smash the pedal. Not getting peak boost until ~3k which seems intentional.

First 4 are 3rd gear, 4th one is 4th gear, 5th is 3rd and 4th:

http://www.bootmod3.net/log?id=5e5998afd10b43119366987b

http://www.bootmod3.net/log?id=5e599806d10b43119366986a

http://www.bootmod3.net/log?id=5e5997c2d10b431193669867

http://www.bootmod3.net/log?id=5e59979dd10b431193669864

http://www.bootmod3.net/log?id=5e599456d10b430de1724389

http://www.bootmod3.net/log?id=5e59934ed10b430de172437d


What do you guys think? Still pretty crap?

On the timing issue, only thing I can think of - I did the spark plugs myself - gapped NGK 97506 to 0.022. First time I've ever done this. Could I have fucked something up that would be causing the wacky timing?

[Korvo]

Are you PWG? You're not holding boost very well. Almost 5psi off target near redline in most of those logs.

[aps]

Originally Posted by pdegene

Are you PWG? You're not holding boost very well. Almost 5psi off target near redline in most of those logs.

Yeah, that's been the case in almost all my logs PWG problems

[Halim@HCP]

Originally Posted by pdegene

Are you PWG? You're not holding boost very well. Almost 5psi off target near redline in most of those logs.

Turbo runs out of steam on the PWG.

[socalengineer]

Will there be any gains to be had by using a Dorch Stage 2 pump with this file?

Are you going to be releasing a Stage2+ E30 tune for the n55 pwg like there is for the ewg motor?

[TSA8151]

Originally Posted by socalengineer

Will there be any gains to be had by using a Dorch Stage 2 pump with this file?

Are you going to be releasing a Stage2+ E30 tune for the n55 pwg like there is for the ewg motor?

PWG n55s limitations are its turbo not fueling. Wouldn't make sense to install a stage 2 pump without a bigger turbo.

[thejeremyman9]

Originally Posted by TSA8151

PWG n55s limitations are its turbo not fueling. Wouldn't make sense to install a stage 2 pump without a bigger turbo.

Yup. Stage 2 OTS map already maxes PWG turbo out. Theres no need for a stage 2+ PWG map.

[TO 335]

Any update on new OTS maps for PWG been over a year now or did we max out V8.1?

[n55david]

Originally Posted by TO 335

Any update on new OTS maps for PWG been over a year now or did we max out V8.1?

you'll need to go custom for.ypur car if.you want anything more really power wise. assuming you aren't 100% maxed out now, it varies a little car to car.