E85 + Evo 10 =
Ok here we go...
This Evo 10 came back in after addressing some fuel delivery problems.
For the back history on this Evo 10 on E85 see the 1st post in this thread.
parts added since last time:
Walboro Fuel Pump upgrade (maxed out the stock one on E85)
Forge wastegate actuator
Pierburg 3port boost solenoid
Fuel control came back. Went from shooting up to 13.5 AFR at 6500 last time to 10.1 AFR this time on the base run.
The single 3port boost solenoid gave up nothing to the stock two solenoid arrangement and added control and precision over the factory 2port (the same things we always see when upgrading to a 3port in the Evo 8/9)
The Forge Wastegate helped to hold more boost. However, the stock turbo is now done within this arrangement @ 41lb. The airflow would just flat line and the turbo would supply no more flow.
Keep in mind everything is still just bolt ons, no porting, a quiet "stealth" exhaust and still stock cams.
This time around it made:
380whp / 371wtq
Great power for a Evo 10 on the stock turbo and cams so far on our dyno.
and boost before with stock actuator and stock solenoids:
You can see I tuned in 1psi-2psi more in the low and midrange over last time. From 5500 on, the stock boost control system was maxed out 100% duty cycle before. You can see now with the upgraded WGA and 3port I was able to get almost 2 more psi out of it 5500 to redline
This Evo 10 came back in after addressing some fuel delivery problems.
For the back history on this Evo 10 on E85 see the 1st post in this thread.
parts added since last time:
Walboro Fuel Pump upgrade (maxed out the stock one on E85)
Forge wastegate actuator
Pierburg 3port boost solenoid
Fuel control came back. Went from shooting up to 13.5 AFR at 6500 last time to 10.1 AFR this time on the base run.
The single 3port boost solenoid gave up nothing to the stock two solenoid arrangement and added control and precision over the factory 2port (the same things we always see when upgrading to a 3port in the Evo 8/9)
The Forge Wastegate helped to hold more boost. However, the stock turbo is now done within this arrangement @ 41lb. The airflow would just flat line and the turbo would supply no more flow.
Keep in mind everything is still just bolt ons, no porting, a quiet "stealth" exhaust and still stock cams.
This time around it made:
380whp / 371wtq
Great power for a Evo 10 on the stock turbo and cams so far on our dyno.
and boost before with stock actuator and stock solenoids:
You can see I tuned in 1psi-2psi more in the low and midrange over last time. From 5500 on, the stock boost control system was maxed out 100% duty cycle before. You can see now with the upgraded WGA and 3port I was able to get almost 2 more psi out of it 5500 to redline
Stay tuned! 
Evolving Member
Joined: Feb 2006
Posts: 285
Likes: 0
From: Glendale Heights, IL
10.0 to 1 seems a bit rich for E85. Is that where it made the most power? It seems mid to high 11's works best for me, but then again I'm on a larger turbo with a decent size intercooler.
EDIT: You must be talking about this:
It means the car gave back fuel control with pump upgrade. That was the base run after putting the pump in, it was then tuned for the upgraded pump.
Last edited by GST Motorsports; Jul 26, 2009 at 08:00 PM.
Where are you seeing AFR on this car? Yes 10:1 AFR on a gasoline wideband on E85 is pig ignition misfire rich.
EDIT: You must be talking about this:
It means the car gave back fuel control with pump upgrade. That was the base run after putting the pump in, it was then tuned for the upgraded pump.
EDIT: You must be talking about this:
It means the car gave back fuel control with pump upgrade. That was the base run after putting the pump in, it was then tuned for the upgraded pump.
You mention AFR on a gasoline wideband...is my AEM UEGO useless if I decide to run E85? Thanks.
I usually tune with it in Gasoline scaling as it's easier to react with numbers you know after seeing them for 20years, than new AFR scaling.
Some people prefer Lambda but I use what I am used to as it allows me to take my foot out that much quicker.
Nope it works just fine, I just mention gasoline wideband so there is no confusion in sharing AFR numbers.
I usually tune with it in Gasoline scaling as it's easier to react with numbers you know after seeing them for 20years, than new AFR scaling.
Some people prefer Lambda but I use what I am used to as it allows me to take my foot out that much quicker.
I usually tune with it in Gasoline scaling as it's easier to react with numbers you know after seeing them for 20years, than new AFR scaling.
Some people prefer Lambda but I use what I am used to as it allows me to take my foot out that much quicker.
