I'm thinking about running E85 so I'm thinking out loud here. Some issues I need to resolve are the OS, wiring harness for sensor and fuel delivery. My OS is currently a 2007 Trailblazer but that causes a issue with my current transmission since it's looking for a ISS that my trans doesn't have. 2007+ transmissions have the extra sensor whereas 2006 and prior do not. The trans can be retrofitted with the sensor but my harness will also need to be updated along with my ECM. My ECM is a E40 but I've read the E38 and E67 are better suited not only for E85 but also for boost. The issue with all that is my shortblock is already built with a 24x reluctor. So most likely sticking with E40 ECM and 2006 Trailblazer OS. A plus is that there are flex fuel conversions kits for 2006-09 Trailblazers. So I need to make some phone calls and find out how that intergrates into my wiring harness from CPW. Fuel delievery will be slightly more difficult to achieve with the route I planned to take with pump/race gas. I need to find out if Dual AEM E85 320lph pumps will be enough. Injectors sizing should be easy enough as I think 160+lb/hr injectors will do. If the increase in power really can be a 10-20% then I may possibly greatly exceed my power goals and I wouldn't need to worry about meth injection.

 

You will want dual 450s at least. Check out my spreadsheet I made in the fuel section, should be of great help.

 

So with E10 I would need roughly 80lb injectors and around 400lph @ 60psi and a -6an ~ 3/8" line would be enough. Assuming 950hp @ the crank

And with E85 and roughly needing 50% more flow I would need 120lb injectors ( 80x1.47 ) and 600lph @ ??60psi??and probably upgrade to -8an ~ 1/2" line? Assuming 1100hp @ crank

The AEM E85 pumps look to be close to sufficient at 60psi delivering close to 600lph. This of course with increased voltage via Hotwire kit or boost a pump.

The Walboro 450 pumps don't look like they'll fit my sender bucket is all.

I'm a retard seriously so if I'm way off then please pitch in.

 

How much power at the wheel are you shooting for and how much boost at max go? Lets say 950hp and 20psi of boost max.

Pump gas (e10), you will want:
1.) 415L/hr at boost pressure. Lets say you run a 50psi base fuel pressure. 96lb/hr@4bar injectors will get you 422L/hr at 95% IDC. If you want a single pump, a A1000, or MP4303 will work good. Dual pumps, you will want basically anything more than dual walbro 255s. Dual 400s is about 620L/hr at 70psi.

With E85, you will want:
2.) 584L/hr at boost pressure. At the same 50psi base pressure, 127lb injectors are about 559L/hr, and 160s are 704L/hr. For pumps, a single A11102 will flow 704L/hr at 70psi. Dual pumps 2 walbros 400s or walbro450s will get you 623 and 700L/hr at 70psi.

I would not do a boost a pump thing, but thats just me. Upgrading the wiring is essential in all aftermarket pumps. I run 2 runs of 10ga wiring on my walbro 400s. May as well do -8an line for either setup, it will be plenty.

Making them fit as another issue...might need a fuel cell depending on how the stock sender looks.

 

Shooting for 800+rwhp on C16 setup @ 16lbs boost. Engine is setup for 9.7:1 CR

With E85 I'd hope for 900rwhp @ 16lbs boost.

For cruising around tune on 93 octane and larger pulley it doesn't really matter to me what power I have as there will be more than enough for the street.

I would want my Max IDC to be 80%. I'm fine with the no boost a pump deal as it will definitely have a Hotwire kit for a constant 13.5v at the pumps. I will planned on having a custom fuel cell made from Ricks Tanks with a setup from Lonnies Performance using my stock sender unit/bucket. I ran across this last night and it looks like a nice setup.

https://www.radiumauto.com/Fuel-Cell...Tank-P537.aspx

And thanks I really appreciate the input and help. BTW have you heard of E40 ECMs not liking very larger injectors?

 

You dont automatically get more power just by running E85, you either have to up the boost or up compression to really see a difference.

Why 80% for IDC? 95% is usually the standard except for big, big injectors (like 200lb+).

I have heard its a little tricky to get big injectors to work, you have to do a lot of scaling. It can be done, but its a pain.

 

Sub'd.

 

Everything I've read with E85 compared to C16 / 93 pump showed 10-20% increase in power levels with same amount of boost. Or am I reading wrong? I figured the tune was changed of course and timing increased. Wouldn't more boost make more power with either fuel type regardless?

 

If the setup is timing limited on pump gas, then yea you could see more power by more timing, but this is really with high compression engines with boost. If you take a 9:1 engine and do a back to back with e85 and pump gas on the same boost level (assuming intake temps arent out of control), then the difference is not that much. If you are having to pull a bunch of timing because of detonation with pump gas, then yea you could have more power, but just generically saying you will make more automatically on e85 is not correct.

I would be very surprised to see 10%+ increase in c16 to e85. C16 is good stuff.

More boost wouldnt necessarily be more power if you are having to pull a bunch of timing.

 

I was totally under the impression that E85 would make more than C16. I know the Internet can be full of bogus stuff but there has to be some truth to it or why would guys even consider it? (I'm not being cocky here just talking sometimes keyboard can make it seem that way)If I don't go E85 and just use 93/C16 then I will be using meth injection.