Mach5 Performance Upgrades

EmiraMike53 · Tuesday at 12:56 PM

Has anyone had any experience with the Mach5 Performance products. I'm thinking of giving them a try.

Here's what all they have for the i4...

Below is the updated MACH5 Emira I4 2.0T / M139 Quotation (USD | 2026 Q1);

Sport Cat Downpipe @USD 2,100-

(300-cell, without triggering CEL & no ECU tuning required)

Cat-Back Exhaust System @USD 1,650-

(OEM valve compatible)

Active Valve Control Kit @USD 360-

(with relocation system)

Performance Heat Exchanger Upgrade @USD 1,165-

Performance Intercooler Upgrade Kit @USD 2,433-

(including Heat Exchanger)

Titanium Throttle Inlet Pipe @USD 198-

(with 1 Meth Bung)

Titanium Charge Pipe @USD 258-
(with BOV Port)

Package Incentives & Promotions

Titanium Intake Package – 5% Discount

When purchasing the Titanium Throttle Inlet Pipe and Titanium Charge Pipe together, a 5% bundle discount will be applied.

Performance Intercooler Upgrade Kit – Complimentary Titanium Intake Pipes

When purchasing the complete Performance Intercooler Upgrade Kit (incl. Heat Exchanger), the following items will be included at no additional cost:

Titanium Throttle Inlet Pipe w/ 1 Meth Bung

Titanium Charge Pipe w/ BOV Port

Order Value Discount

Orders with a total product value above USD 3,500 qualify for an additional 5% discount.

Active Valve Control is sold on promotional cost and is excluded from the discount.

Active Valve Control – Technical Overview

For the Emira platform, the MACH5 Active Valve Control is designed not only for sound control but also for long-term reliability and eliminating CEL triggering caused by the OEM vavle control.

The system incorporates a relocation design, moving the OEM valve control electronics away from the high-temperature exhaust environment. This addresses a known Emira issue where the OEM valve controller may experience thermal-related malfunction and cause CEL triggering.

The MACH5 system provides:

True 100% open valve operation where as OEM only opens 45 degress even in Track mode.
Elimination of heat-related valve faults

Milk242 · Tuesday at 1:02 PM

I have the downpipe, exhaust, valve controller, charge cooler and input pipe. Haven’t installed the input pipe or charge cooler.

I removed the valve controller because I missed having OEM functionality. Their valve controller is either 100% opened or 100% closed.

Downpipe really doesn’t produce any CEL which is nice and enhances the factory burbles.

Exhaust is pretty well made but the way they oriented the valve on the exhaust required I extend the factory harness if I kept wanting to use the factory valve motor. Ask them about that before you purchase if you decide to not use their valve controller. The trunk does feel cooler than before using the heat wrapped exhaust (still warm)

Charge cooler looks to be a bar and plate intercooler and larger than factory. I’m still deciding if I want to tackle the install myself or just give it to my dealership to do it.

EmiraMike53 · Tuesday at 3:15 PM

Milk242 said:
I have the downpipe, exhaust, valve controller, charge cooler and input pipe. Haven’t installed the input pipe or charge cooler.

I removed the valve controller because I missed having OEM functionality. Their valve controller is either 100% opened or 100% closed.

Downpipe really doesn’t produce any CEL which is nice and enhances the factory burbles.

Exhaust is pretty well made but the way they oriented the valve on the exhaust required I extend the factory harness if I kept wanting to use the factory valve motor. Ask them about that before you purchase if you decide to not use their valve controller. The trunk does feel cooler than before using the heat wrapped exhaust (still warm)

Charge cooler looks to be a bar and plate intercooler and larger than factory. I’m still deciding if I want to tackle the install myself or just give it to my dealership to do it.

When you say 100% closed...is that even drivable? Doesn't the exhaust need to be at least partially open?

geoffbland · Tuesday at 4:39 PM

EmiraMike53 said:
When you say 100% closed...is that even drivable? Doesn't the exhaust need to be at least partially open?

100% closed exhaust valve just diverts the exhaust gas a different, quieter way through a silencer - so it's not like it blocks the exhaust. But this is still restrictive so having the valve closed all the time is bad for the engine at higher revs long term.

On the Emira...