E85?

[EcoBrick Bob]

My boost-a-pump seemed to add about 200 psi to low FRP range, based on my logging. It helps but isn't the final solution.

Will you have to run a larger fuel line when you are able to increase volume of LPFP?
I know the G8 guys have, and because that system has a return line,, they use the original feed line as the return.

 

[Slow10SHO]

Maybe start looking into fuel pump internals. I needed those when i was running e85 on my speed3. Im not sure if its the same with the sho's but the ones i used were from KMD who made them for audi a3(they worked on the speeds).

 

[EcoBrick Bob]

Problem is with DI pump... No known higher volume alternative at this point. 4DRHTRD is having Squash modify his LPFP for more volume so he can run E-85 plus WET Nitrous system. It's a work in progress. Our fuel system is returnless, so the jury is out as to whether we will need a larger fuel line. As it stands, E-85 cannot be used safely at WOT with tuning and everything else stock. All this is based on logging data that shows what happens to Lambda #s for both banks when doing WOT testing or at the strip.

 

[EcoPowerParts]

I think I've figured out how to run E85 without upgrading the in tank fuel pump. I'm going to feed my 1 gallon jaz fuel cell and use it as a surge tank. I'm going to start with two auxillary injectors fed by my aux fuel tank/pump setup to see if that's enough to make up for the lack of fuel from my stock system. If not I'll have the factory intake manifold configured for 6 injectors and make a complete port fuel injection setup for my car.
Here's a great article from the mazdaspeed guys who are a few years ahead of us BUT have the same issues we do, DI and big HP.

http://www.mazdaspeedforums.org/forum/f303/lets-talk-about-pi-setups-133321/

There's a ton of crap talking on that forum but also some great technical information as well. I am still working with Squash performance on doing an upgraded dual ITFP setup but it will necessitate the installation of a new fuel line and utilization of the stock line as a return line. The beauty of using the completely stock fuel system and a surge tank is that you don't have to upgrade the ITFP, HPFP or DI injectors, just add 2 to 6 (I'll find out eventaully) aux fuel injectors, a fuel cell and fuel pump/fuel pressure regulator and aux injector controller and you're done. Sounds difficult but actually quite easy and E85 will blow the DOORS OFF meth injection for HP/Torque or even race gas with meth injection.

 

[SHOdded]

Be especially interesting when the E85 project hits the road AND the engine doesn't turn into a parts diagram

 

[EcoBrick Bob]

BLACK HOLE SCIENCE!!!! I LOVE IT!!!! omg!!!!!!!!

 

[EcoPowerParts]

Aux injector mount showed up today, ordering the controller next week. Just waiting for my car to get back from the manufacturer that's building the new downpipes for our cars.

 

[SHOdded]

Hot diggity dog!

 

[HighBarSHO]

Anybody try a small mix (couple gallons) on stock tune? Should lean out just a tad. Worked well on my last turbo car. Anyone experiment with this (non-tune)?

 

[EcoPowerParts]

Anybody try a small mix (couple gallons) on stock tune? Should lean out just a tad. Worked well on my last turbo car. Anyone experiment with this (non-tune)?

I did and worked with Torrie to tune. With a 6 gal 91/2 gal E85 I was running out of fuel on the stock fuel system, I had to use my nitrous kit fuel solenoid to augment the fuel to compensate. However with that setup I could run my 100 octane tune which was good for [email protected] with my car.