Monjarassi's '04 Civic Si-Turbo build thread: The Final Build.....

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Originally Posted by monjarassi

Very good info brotha!!! Thanks man if i could rep u i woud!!!

BTW RBC has been sold injunction of the vac block.

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hmm custom intake mani in the works???

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Originally Posted by Hasbro

Good stuff and well explained, USAF. I don't think I'd be interested in using it with a stock a3, just curious.

-I imagine e85 lends itself better to higher compressions or forced induction. Would the stock compression of the K20a3 be enough to make it viable?

-Ballpark changes to hp? 5, 10%?

-GR8EP mentioned purging with unleaded. Without changing timing and other brain activities? Can you use unleaded some of the time without damaging? For instance, driving to an area that doesn't have E85?

-Transferring some of this to it's own thread would make a good tutorial.

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I would not recommend running unleaded on a e85 map, e85 makes it power from the timing that can be added. So in turn I would just load your original map that you were tuned on before e85. You will just have to keep your laptop with you just in case. My self, i will have my 91 tune and an e85 tune.

As for the a3 with turbo... it would benefit from e85, allowing you to make 300whp more easily but remember the a3 rods are not as strong as the a2 rods so anything over 300whp will start to play with the life of the motor. yet there have been a3's that make 330whp and last a long time. when I had an a3 turbo I also had two maps for that, 91 making 254 and a 100oct map making 305. The 100oct map was for playing haha.

and for the power difference from 91,93 oct to e85 would be a lot. I have seen gains in the 50whp ball park.

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Originally Posted by monjarassi

BTW e85 around me is 2.95-3.10 depending on the area ur in.

And from my house the closest location to fill up is 10min away

Worth the drive if u ask me

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well worth it for sure!

When I switched to e85, I made 100whp over 93 octane since we could run more boost and timing, so very good lol

Also, when dealing with the internal engine rust concern...every fall when I put my car in storage for 5+ months of winter I put in Stabil http://www.goldeagle.com/brands/stabil/ with a full tank of 93 and drive it nicely 30 min to my storage area on my e85 tune. Then in the spring I drive it nicely home and remove my return line to drain the fuel system with the fuel pump powered with the engine off. Reconnect the lines and fill with fresh e85 ;)

^ i can vouch for the gains as well- every one of my friends with boosted cars made about 100whp more when switching to e85. Im looking into it as well over the winter... but with meth too

Good info guys

Love the set up bro, congratz