R34 GT-R Full Exhaust Upgrade: Tomei Expreme Ti Install Guide
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Nissan Skyline GT-R
BNR34 (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.
Advanced DIY
4-6 hours
Tomei Expreme Ti Full Titanium Exhaust
Nissan Skyline GT-R (BNR34)
Estimated Cost
$2,800-$3,400
Parts: $2,400-$2,800
Labor: $400-$600
Horsepower
+15-25 hp (less restriction, cleaner turbo spool)
Torque
+10-15 lb-ft
Response
Faster turbo spool ~200 rpm earlier
Prerequisites
- • Downpipe flange gaskets
- • Penetrating oil 24hr pre-install
- • Jack stands rated 3+ tons
Installation Progress0%
Installation Steps
1
Jack car on level surface, secure with 3-ton stands at pinch welds
15 min
R34 body mounts are fragile — lift at reinforced lift points only
- • Never work under car on jack alone
2
Remove heat shields from transmission tunnel
20 min
3
Unbolt downpipe Y-flange from turbos
45 min
4
Remove stock downpipe and Y-pipe assembly
20 min
5
Unbolt cat-back from downpipe flange
15 min
6
Support cat-back, unbolt all rubber hangers
20 min
7
Lower stock cat-back system
15 min
8
Test-fit Tomei downpipe first, then cat-back
45 min
9
Torque downpipe-to-turbo nuts in cross pattern
20 min
10
Connect cat-back sections with new copper gaskets
30 min
11
Hang exhaust on rubber hangers, verify clearance
20 min
12
Start car, check for leaks at all joints
10 min
Parts Required
All parts needed for this modification
Tomei Expreme Ti cat-back titanium
Quantity: 1 • $2,200
Tomei Ti downpipe front section
Quantity: 1 • $400
Exhaust flange gaskets (copper)
Quantity: 4 • $35
Exhaust clamps (3-inch)
Quantity: 2 • $30
Tools Required
14mm + 17mm sockets
Common
Impact wrench
Rental: $20/day
Rental
Penetrating oil (PB Blaster)
Common
O2 sensor socket
Rental: $10/day
Rental
Supporting Modifications
Additional mods recommended or required for optimal performance
Metal cat converter (HKS or Tomei)
recommended
Stock cat is restrictive and cracks at high EGT
O2 sensor bung extenders
optional
Ti exhaust heats differently — original sensor position may read off
Tuning Requirements
ECU Flash Required
Dyno Tune Required
Estimated Tuning Cost
$0
No tuning required for exhaust-only modification. Optional map touch-up if running standalone ECU for optimal A/F ratio tuning.
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