2008-2015 Evo X Mod Guide

These are the typical results from modifying your 2008-2015 Mitsubishi EVO X . The baseline was a completely stock 2015 EVO X Final Edition and we have the 2 most common stages of modifications from stock to compare. All of these results are uncorrected numbers which are 20-25% lower than you would expect to see on a Dynojet dyno or our “Shootout” numbers. For more information on comparing dyno numbers check out our dyno page.

Our starting point was completely stock. With no tuning, no modifications, and with 91 octane fuel.

This vehicle made 228.3 HP and 246.9 FtLb TQ on our Dyno at 20psi tapering down to 12psi by redline. The factory rates this car at 303 HP/305 FtLb TQ at the crank. A non Final Edition 2008-2015 EVO X makes 291 HP/300 FtLB TQ at the crank or about 216 HP/241 FtLb TQ at the wheels on our dyno, so most people will see gains of an additional 4%.

Below you find the information of our findings along with dyno graphs for comparison. If you have any questions about building your 2008-2015 EVO X, give us a call (763) 316-5882.

Stage 2

STG2 vs Stock

This setup made – 266.8 HP / 285.6 FtLb

Peak gains of 39 HP and 39 FtLb.

Average gains of 38 HP

This stage includes an Aftermarket Intake, Turbo Back Exhaust and 3port Boost Controller. An upgraded Intercooler/Piping is not required but does help. This car made 266.8 HP and 285.6 FtLb TQ with boost hitting 26psi and tapering down to about 19 by redline. Tuned on 91oct.

You can expect to see about 17% or 39 HP peak gain in power and 16% or 39 FtLb peak torque gain. AT 3200-5000 we saw a 26 – 36 HP increase and from 5000rpm+ it increased to a 45 HP gain by the 7600rpm redline.

Stage 3

Stage 3 vs Stock

This setup made – 322.1 HP / 333.2 FtLb

Peak gains of 94 HP and 86 FtLb.

Average gains of 72 HP

This stage includes all of STG 2 plus the addition of Fuel Injector Clinic 1200cc, DW 340lph fuel pump and E85. This car made 322.1 HP and 333.2 FtLb, with boost hitting 28psi tapering down to about 19psi by redline. Tuned on E85.

An Ethanol sensor is a great option at this stage as well. When tuned Flex Fuel you can put any fuel from pump gas to E85 in the car at any time and the car will always run correctly.

You can expect to see about 41% or 94 HP peak gain in power and 35% or 86 FtLb peak torque gain over stock. We purposely keep the wheel torque around 325-345 FtLb to help preserve the stock rods.

18k Turbo

18k Turbo vs Stock

This setup made – 406.1 HP / 333.6 FtLb

Peak gains of 179 HP and 87 FtLb.

The next step after going flex fuel (E85) with the stock turbo is to upgrade the turbo. We have found a 18k is a great option for this. If you have at least 1000cc Fuel Injectors, a 340lph Fuel Pump, and an Upgraded Intercooler you are ready to bolt on a 18k Turbo. After that all you need is a new pro tune. This setup is running 25psi.

This setup made 406.8 HP and 333.6 FtLb. We saw a 178.5 HP or 78% increase in peak power and 86.7 FtLb or 35% in peak torque.

The stock turbo spools just slightly quicker. Both turbos made similar power utill about 4500rpm. After 4500rpm the 18k Turbos power just kept climbing. If either of these setups were on a built block the could have made more power/torque below 5000rpm but we kept the torque around 330ftlbs to help preserve the stock rods.

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