Can someone explain e30 to me

[turboAWD]

I hear some areas actually sell pre-mixed E30. As it is, I have 2 E85 pumps near me (just found the 2nd!) and I usually mix ~4.5-5 gallons of E85 + CA91 (which usually ends up being 7.5-8.5 gallons, depending on how empty I was). Terry recommends 5-6 gallons of E85 with CA91, IIRC. I think the most I've done was 5.25 when I was nearly empty.

That's all I've done so far (jb4, plugs, intakes, FMIC, E30). I usually drive on map 3, sometimes 4. For the track (road courses), I drop down to 2 or fill up with 96 or 100 octane or both. I also have a TCU and ECS 10 for suspension adjustments and sway bars, a pedal commander and a few other minor non-performance mods.

My last car ('05 Legacy GT wagon) had a ton of work: modified turbo, plugs, injectors, pump, TMIC, gutted UP, DP, valve body. I wanted something with less hassle, less mods. So I paid a bit more up front for more reliable power

Edit: and after hearing about all the issues various people have had with various cat / pipe mods, such as leaking turbos, etc, there's no way I'm touching ANYTHING there. I might go with CPI and try E85 straight after a BMS BEF (they have a back-end-flash for running straight E85 with CPI, it's apparently pretty decent now).

 

[DavidinGA]

True. But I rather stick to what’s recommended by BMS than risk anything.

BMS recommends reviewing your logs and then moving up/down the map accordingly.

 

[Ozbone]

Two logs attached running straight E85 on the E85 19 degree BEF, AFR around 12.5, local E85 from the pump where I am measures at around E80, not the best logs (this was testing the BEF) but good to see a comparison between CPI and no CPI. CPI failed for some reason after I changed each RPM fuel bias to different settings, changed it back and works fine. no idea why this happened.

One log the CPI is running fine, can see the trims trying to minus with the CPI set to 80 across all RPM range
Second log CPI failed to run, Fuel trims maxed, HPFP struggling, not a happy run.

I chose the CPI route for safety as I also travel with family in the car and did not want a Meth tank sitting in the car.