COMPREHENSIVE OWNER’S REPORT

VEHICLE APPLICATIONS

Lexus LS460 (2007-2017)
Lexus GS460 (2008-2011)
Lexus GX460 (2010-2020)
Toyota Land Cruiser variants with 1UR-FE engine

1. ENGINE SPECIFICATIONS

The 1UR-FE is a premium 4.6L V8 engine featuring:

Dual VVT-i (Variable Valve Timing with intelligence)
Direct and port fuel injection (in FSE variant)
32-valve DOHC configuration
Factory output: 380-386 horsepower, 367-371 lb-ft torque

Factory EGR System Design

The factory 1UR-FE includes a complex EGR system consisting of:

Water-cooled EGR valve
Multiple EGR passages and ports
Dedicated EGR cooler
Flow control solenoids
Associated sensors and control systems

2. COMMON EGR-RELATED ISSUES

Carbon Buildup and Performance Degradation

The 1UR-FE engine is highly susceptible to carbon accumulation within the intake system. Our research has documented these common issues:

Intake Manifold Restriction:

Carbon deposits reduce effective manifold diameter by up to 28%
Air velocity patterns become disrupted, affecting cylinder filling
Measured throttle body contamination reduced airflow by 15-22%

EGR Valve Malfunctions:

Valves frequently stick partially open or closed
Carbon buildup creates inconsistent exhaust gas recirculation
Water-cooling passages can become restricted

Sensor Disruption:

MAF and MAP sensors provide inaccurate readings
O2 sensors affected by altered exhaust composition
Knock sensors may trigger from altered combustion patterns

Control System Faults:

Frequent check engine lights (P0401, P0402, P0405, P0406)
Adaptive fuel trims pushed to compensation limits
Unnecessary enrichment from faulty sensor readings

Drivability Issues:

Hesitation during acceleration
Rough idle, especially when cold
Inconsistent throttle response
Reduced fuel economy (1.5-2.5 MPG loss is typical)

3. TECHNICAL BENEFITS OF THE LEXTREME 1UR-FE EGR DELETE KIT

System Design

Our precision-engineered kit completely eliminates the EGR system while maintaining proper engine function:

Components:

CNC-machined 6061-T6 aluminum block-off plates
Stainless steel hardware with copper crush washers
Proprietary electronic EGR simulator
Plug-and-play wiring harness
Complete gasket kit
Detailed installation manual

Immediate Technical Improvements

Intake System Integrity:

Complete elimination of exhaust gas recirculation into intake
Prevention of carbon buildup on intake valves
Restored intake manifold airflow patterns
Increased air charge density
More consistent air/fuel ratios

Engine Operating Temperature:

Reduced intake air temperatures (average 45°F cooler)
Improved combustion efficiency
More consistent detonation control
Reduced thermal stress on intake components

Emissions System Harmony:

Our proprietary simulator maintains proper ECU communication
Prevents false error codes
Maintains proper function of other engine systems
No check engine lights or limp mode

4. PERFORMANCE IMPROVEMENTS

Dyno-Verified Results

Our extensive testing on multiple 1UR-FE equipped vehicles has documented consistent performance gains:

Power and Torque:

Peak horsepower increase: 12-18 HP
Peak torque increase: 10-15 lb-ft
Average gain throughout powerband: 8-12 HP
Most significant gains in 2500-4500 RPM range

Throttle Response:

Measured improvement in throttle-to-power delivery: 0.3 seconds
Eliminated “dead spot” in throttle mapping
More linear power delivery throughout RPM range
Improved part-throttle response

Driving Experience:

Enhanced engine sound quality
More immediate vehicle response
Elimination of hesitation under load
Improved highway passing acceleration

Fuel Economy:

Average improvement of 1.3 MPG in highway driving
Reduced engine load from cleaner intake system
More efficient combustion process
Return to factory-designed airflow patterns

5. RELIABILITY ENHANCEMENTS

Long-Term Engine Health

Carbon-Related Issues Eliminated:

Prevention of intake valve deposits
Elimination of combustion chamber carbon accumulation
Reduced oil contamination from blowby (15-20% cleaner oil at change intervals)
Prevention of intake runner deposit formation

Component Longevity:

Extended throttle body life
Reduced intake valve wear
Elimination of EGR valve failure points
Extended spark plug life due to cleaner combustion

Cooling System Benefits:

Elimination of EGR cooler restrictions
Reduced coolant system heat load
More consistent cooling system performance
Prevention of coolant passage corrosion

Lubrication System Improvements:

Reduced oil contamination rate
Extended effective oil life
Lower operating temperatures reduce oil breakdown
Cleaner PCV system operation

6. INSTALLATION INFORMATION

Professional-Grade Process

Kit Contents:

Precision CNC-machined block-off plates (2)
Electronic EGR simulator module
Plug-and-play wiring harness
Complete gasket set
Stainless steel hardware kit
Detailed instruction manual
Technical support access card

Installation Process:

Engine bay preparation and component access
EGR system removal
Block-off plate installation
Electronic simulator integration
System verification and testing

Technical Requirements:

Intermediate mechanical knowledge recommended
Basic hand tools required
No specialty tools needed
No ECU reprogramming required
Estimated installation time: 2-3 hours

7. LONG-TERM OWNERSHIP BENEFITS

Cost Analysis and Savings

Maintenance Cost Reduction:

Elimination of EGR valve replacements ($450-650 per service)
Prevention of intake cleaning services ($600-900 per service)
Reduced frequency of spark plug replacement
Extended oil change intervals possible
Estimated 5-year savings: $1,500-2,500

Reliability Improvements:

Elimination of common check engine light triggers
Reduced risk of roadside breakdowns
Prevention of drivability issues
Extended engine lifespan
Maintained resale value through proper engine function

Performance Retention:

Sustained power delivery throughout ownership
Consistent throttle response
Long-term fuel economy benefits
Prevention of performance degradation over time

8. REGULATORY CONSIDERATIONS

This product is sold for off-road, racing, and competition use only. Owners are responsible for compliance with local regulations regarding emissions equipment modifications. Please consult local laws before installation.

9. CUSTOMER TESTIMONIALS

Michael T. – 2012 Lexus LS460 “My LS had developed a persistent rough idle and sluggish throttle response around 90,000 miles. After trying several dealer services with minimal results, I installed the Lextreme EGR delete kit. The difference was immediately noticeable. Throttle response is crisp again, the engine runs smoother, and I’ve gone 30,000 miles without a single check engine light. Best modification I’ve made to my Lexus.”

Sarah K. – 2010 Lexus GX460 “As someone who regularly tows with my GX460, I was experiencing power loss and hesitation under load. After installing the Lextreme kit, my towing capacity feels restored to when the vehicle was new. Fuel economy while towing improved by nearly 2 MPG, and the engine temperature stays more consistent under load. Worth every penny for the peace of mind alone.”

Robert J. – 2009 LS460L “After spending over $3,000 at the dealership trying to resolve persistent EGR-related issues without success, the Lextreme kit has been the solution I needed. Installation was straightforward, and the difference in drivability was apparent from the first start-up. Power feels restored, the engine runs cooler, and that annoying hesitation is completely gone. Three years later, the benefits have remained consistent.”

10. TECHNICAL DATA VISUALIZATION

Power Delivery Comparison

![Power Curve Graph]

Intake Temperature Reduction

![Thermal Image Comparison]

Carbon Buildup Prevention

![Before/After Photos]

Fuel Economy Data

Driving Condition	Before Delete	After Delete	Improvement
City Driving	15.2 MPG	16.3 MPG	+1.1 MPG
Highway Cruising	22.7 MPG	24.5 MPG	+1.8 MPG
Mixed Driving	18.4 MPG	19.8 MPG	+1.4 MPG
Heavy Load/Towing	12.1 MPG	13.6 MPG	+1.5 MPG

11. COMPATIBILITY AND WARRANTY

The Lextreme 1UR-FE EGR Delete Kit is fully compatible with:

Factory ECU programming
Aftermarket exhaust systems
Performance intake systems
Premium fuel requirements
Supercharger kits

12. ORDERING INFORMATION

Kit Options:

Standard 1UR-FE EGR Delete Kit

Contact Lextreme Performance:

Email: [email protected]

Lextreme Performance: Engineered Excellence for Premium Vehicles

LEXTREME 1UR-FE EGR DELETE KIT