After selling my beloved 400hp E85 2010 Ralliart Sportback, I picked up a 2013 VW Golf R. Drove that for almost a year and decided to get rid of it and pick up a 2014 Evo GSR with the SSSL package (Sunroof, leather, HID, Fast Key, upgraded stereo, etc) and get back to Mitsubishi.
Hey look, it's a stock 2014 Evo GSR:
My idea going into this build was to see what the car can do with "simple" modifications along the way.
For example, I was always curious what a relatively stock Evo 10 could do on E85, nobody was really doing this because most people modify the car a bit more before getting tuned, which brings us to this first round...
I baselined the car 100% stock with about 500 miles on it. Then I tuned it with no physical modifications to the car. Only an ECU tune.
You can see the results of this here:
Red plots = 100% stock
Blue plots = 100% stock with ECU tune
Then I put a couple more miles on it, and at around 950 miles I tuned the car on E85 with only these modifications:
ID 1000cc injectors
Blaqops fuel pump kit with Walbro 255
Speed Circuit resonated test pipe
GM 3 port boost solenoid
That's it. Basically two power mods and two fuel mods (for E85). The car sounds pretty much the same as stock and obviously looks 100% stock.
Green plots = 100% stock
Blue plots = 100% stock with ECU tune
Red plots = With modifications listed above, ECU tune and E85
So now I wonder no more what a Evo 10 will do with E85 and almost no modifications. I guessed the car would maybe do 100whp more then stock and I was within 2whp of being right. Keep in mind it's also not just a peaky gain, the whole power curve is so much fuller now the car is just a joy to drive now. Power on demand. One thing to note is that I am purposely keeping the low end boost down as to not overwhelm the stock clutch. I could get a bit more torque out of the car but I am currently choosing not to.
This is an AMAZING value for the money. The car is totally transformed power wise.
Now, as you can see in the plots, the car is a bit choked up with the stock intake/filter so I'm going to install a AEM intake very soon and see what difference that makes.
I also have a set of Bilsteins from a MR and Swift R springs I will be putting on the car soon.
Alrighty, update! Added an AEM intake
I guess these intake thingies work.
Red plots = OEM intake
Blue plots = AEM intake with no tune changes
I was actually surprised it ran less boost down low but not surprised it ran a tad more boost up top.
Not a bad gain. Guess it was pretty corked up.
Next I tuned it a bit for the AEM intake. I decided to keep the boost lower in the low and mid range (stock clutch) and raise it a bit 5,000 rpm up.
Red plots = OEM intake
Blue plots = AEM intake with no tune changes
Green plots = AEM intake with tune changes
Even more gains.
Pretty impressed actually.
Full gains from after tuning:
Red plots = OEM intake
Green plots = AEM intake with tune changes
+33 whp / +12wtq
Full gains so far from OEM bone stock:
Blue plots = OEM stock Evo 10
Red plots = Intake, Test Pipe, 3 port BCS, Injectors, Fuel Pump, E85, tune
131 whp / 93 wtq
Pretty darn happy with that.
Now to figure out why my IDC's are so high at 92%. I suspect the in tank fuel hose...
Hey look, it's a stock 2014 Evo GSR:

My idea going into this build was to see what the car can do with "simple" modifications along the way.
For example, I was always curious what a relatively stock Evo 10 could do on E85, nobody was really doing this because most people modify the car a bit more before getting tuned, which brings us to this first round...
I baselined the car 100% stock with about 500 miles on it. Then I tuned it with no physical modifications to the car. Only an ECU tune.
You can see the results of this here:
Red plots = 100% stock
Blue plots = 100% stock with ECU tune

Then I put a couple more miles on it, and at around 950 miles I tuned the car on E85 with only these modifications:
ID 1000cc injectors
Blaqops fuel pump kit with Walbro 255
Speed Circuit resonated test pipe
GM 3 port boost solenoid
That's it. Basically two power mods and two fuel mods (for E85). The car sounds pretty much the same as stock and obviously looks 100% stock.
Green plots = 100% stock
Blue plots = 100% stock with ECU tune
Red plots = With modifications listed above, ECU tune and E85

So now I wonder no more what a Evo 10 will do with E85 and almost no modifications. I guessed the car would maybe do 100whp more then stock and I was within 2whp of being right. Keep in mind it's also not just a peaky gain, the whole power curve is so much fuller now the car is just a joy to drive now. Power on demand. One thing to note is that I am purposely keeping the low end boost down as to not overwhelm the stock clutch. I could get a bit more torque out of the car but I am currently choosing not to.
This is an AMAZING value for the money. The car is totally transformed power wise.
Now, as you can see in the plots, the car is a bit choked up with the stock intake/filter so I'm going to install a AEM intake very soon and see what difference that makes.
I also have a set of Bilsteins from a MR and Swift R springs I will be putting on the car soon.
Alrighty, update! Added an AEM intake
I guess these intake thingies work.
Red plots = OEM intake
Blue plots = AEM intake with no tune changes

I was actually surprised it ran less boost down low but not surprised it ran a tad more boost up top.
Not a bad gain. Guess it was pretty corked up.
Next I tuned it a bit for the AEM intake. I decided to keep the boost lower in the low and mid range (stock clutch) and raise it a bit 5,000 rpm up.
Red plots = OEM intake
Blue plots = AEM intake with no tune changes
Green plots = AEM intake with tune changes

Even more gains.
Full gains from after tuning:
Red plots = OEM intake
Green plots = AEM intake with tune changes
+33 whp / +12wtq

Full gains so far from OEM bone stock:
Blue plots = OEM stock Evo 10
Red plots = Intake, Test Pipe, 3 port BCS, Injectors, Fuel Pump, E85, tune
131 whp / 93 wtq

Pretty darn happy with that.
Now to figure out why my IDC's are so high at 92%. I suspect the in tank fuel hose...