Recently, the "Sheetz" gas station located directly across the street from my shop, Innovative MotorWorks, installed a set of E85 pumps. (As well as three other locations locally.)

Seeing that I don't drive my personal Civic very far, I decided it was time to throw some corn-fuel in my car.

In preparation for the increased fuel demands, I installed a supplementary Bosch 044 fuel pump inline, with the existing Walbro 255lph feeding it. Fuel injectors remain the same, Injector Dynamics 1000cc's.

It isn't very often that I get to do a good back-to-back comparison of 93 octane vs. E85, so I figured this could serve to some you as a good bit of information.

The full setup is as follows:

Stock K20A2 (completely stock everything inside)
RBC intake manifold
Full-Race top-mount T3/44 manifold
Garrett T3/T67 H.O. (.82 AR exhaust side)
2.5" downpipe (as I cannot fit a 3" with the EKK1 mounts and this manifold)
3" exhaust
TiAL 44mm gate
TiAL Q BOV
2.5" charge piping
Full-Race ver1 vertical flow intercooler
Walbro 255lph in-tank, Bosch 044 inline
ID1000's @ 60psi base pressure

For those that don't know the car:





Now, onto the results. The final numbers ended up at 520whp / 352wtq @ 15.8psi.



Also, here is E85 vs. the last 93 octane tune I had on the car. 520whp vs. 444whp.



And finally, here is a pressure comparison of the two above runs. The dotted dark blue line is 93 octane (16.9psi), and the E85 is the lighter blue solid line.



I would also like to note that fuel demands increased so much, that going from a 45psi base to a 60psi base, the indicated injector duty cycle went from mid-60's on gasoline to mid-90's on E85. More base pressure should solve that (say, 80psi base or so), but I'm not real concerned at this time. Also, ignition timing demands are fairly increased with this fuel. It ended up making the most power with 5 degrees of advance over 93 octane.

I'll be reporting my personal gas mileage with the new fuel as well, so I'll post it up when I run through this tank.



Cheers,

- Derek

 

Wow sweet car. Didn't know the k20s can achieve such power on stock internals. Nice comparison

 

nice write up, more power, less boost

 

Nice setup and ride, you'd make more power if you went with a creepboost setup though , full race ftw.

 

what rock have you been living under

 

Nice

 

this is why I am waiting for some e85 to spring up around here. I cannot wait to try it out!

 

post it up in official stock block thread also
nice number

 

Same here! I have used it before but its been quite a while. No e85 here in TN! SUX! lol

 

Nice to see a lot of power being made on a low base fuel pressure.

Wonder what 100PSI base and a few more PSI would do

 

i wish we had E85 here

 

**** bro nice setup

 

Where your 044 is located? Pics?

 

much bigger increase in power than I was expecting. nice comparison, thanks for sharing.