Evo IX Invidia 3-inch Turbo-Back Exhaust Install
Evo IX Invidia Turbo-Back Exhaust
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Mitsubishi Lancer Evolution IX
CT9A (N/A)
Power
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0-60
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Top Speed
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Current Market Value
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🇺🇸 US Import Information
This vehicle will become legal to import in 0 under the 25-year exemption rule. Check our import guide for details on the process.
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Advanced DIY
4-5 hours
Invidia Q300 3-inch Turbo-Back Exhaust
Mitsubishi Lancer Evolution IX (CT9A)Also compatible with: Evo 8 (with modifications)
Estimated Cost
$1,250-$1,750
Parts: $950-$1,250
Labor: $300-$500
Horsepower
+20-30 hp (with tune)
Torque
+15-25 lb-ft
Response
Quicker turbo spool due to reduced backpressure
Prerequisites
- • Penetrating oil 24 hours before
- • Exhaust manifold gaskets
- • Jack stands 3-ton rating
Installation Progress0%
Installation Steps
1
Jack car securely
15 min
Support at reinforced chassis mounts
2
Remove rear bumper (optional for axle-back access)
20 min
3
Spray penetrating oil on all exhaust fasteners
10 min
4
Disconnect rear O2 sensor
10 min
5
Unbolt stock axle-back at midpipe flange
20 min
6
Remove axle-back from hangers
15 min
7
Unbolt stock midpipe/cat from downpipe
20 min
8
Remove stock midpipe
15 min
9
Disconnect front O2 sensor
10 min
10
Unbolt stock downpipe from turbo
45 min
11
Extract stock downpipe
15 min
12
Install Invidia downpipe with new copper gasket
30 min
13
Reinstall O2 sensors into new bungs
15 min
14
Install Invidia midpipe
30 min
15
Install Invidia axle-back and check clearance
30 min
16
Start engine, check for leaks
15 min
Parts Required
All parts needed for this modification
Invidia Q300 3-inch downpipe (with O2 bungs)
Quantity: 1 • $350
Invidia Q300 3-inch midpipe + cat delete or race cat
Quantity: 1 • $320
Invidia Q300 axle-back muffler
Quantity: 1 • $480
Copper exhaust gaskets
Quantity: 3 • $25
High-temp exhaust nuts
Quantity: 8 • $15
Tools Required
Impact wrench
Rental: $20/day
Rental
14mm + 17mm sockets
Common
Oxygen sensor socket
Rental: $10/day
Rental
Pry bar
Common
Supporting Modifications
Additional mods recommended or required for optimal performance
ECU flash (EcuTek)
recommended
Properly tune for new exhaust, prevent check engine light
Upgraded turbo
optional
Exhaust system pairs well with turbo upgrade
Tuning Requirements
ECU Flash Required
Dyno Tune Required
Estimated Tuning Cost
$400-$600
ECU flash recommended to prevent O2 sensor codes. Dyno tune optional but recommended for maximum gains.
Disclosure: We may earn a commission from purchases made through affiliate links on this page. This helps support our comprehensive modification guides. See our full disclosure policy.