Performance Tuning Hub

Your ultimate resource for automotive tuning, installation guides, and performance part reviews.

2015 GMC Terrain 1st Gen Performance Upgrades and Tuning

Should You Replace Ignition Coils With Spark Plugs? GMC Terrain Diagnosis

Replacing spark plugs on a GMC Terrain? Find out if...
2 min read
2.4L Ecotec
Porsche 911 992 Generation Performance Upgrades and Tuning

LiFePO4 Lithium Starting Batteries: Weight Savings vs. Real-World Reliability

Thinking of swapping your heavy lead-acid battery for a LiFePO4...
3 min read
Battery Management System
1998-2002 Pontiac Firebird Trans Am 4th Gen Performance Upgrades and Tuning

Do Downstream O2 Sensors Affect Gas Mileage? LS1 Diagnosis & Fix

Find out if downstream post-cat oxygen sensors affect fuel economy...
2 min read
Chevrolet Camaro LS1
1966-1970 Dodge Charger B-Body Performance Upgrades and Tuning

Classic Mopar B-Body Overheating at Idle: Radiator Core Differences & Fixes

Fix classic Mopar B-Body idling temperature spikes over 200°F. Learn...
3 min read
440 Big Block
1997 Jeep Wrangler TJ Performance Upgrades and Tuning

Jeep Wrangler TJ Radiator Upgrade Guide: 1-Core, 2-Core, or 3-Core?

Upgrading your Jeep Wrangler TJ radiator? Learn the mechanical differences...
3 min read
2.5L AMC Engine
1997-2003 BMW 540i E39 Performance Upgrades and Tuning

Will Replacing Old O2 Sensors Improve Gas Mileage? BMW E39 540i Diagnosis

Losing MPG with no Check Engine Light? Learn why aged...
3 min read
BMW 540i
1988 Chevrolet Corvette C4 Performance Upgrades and Tuning

C4 Corvette Radiator Guide: 1-Core vs 2-Core vs 3-Core Cooling Efficiency

Learn why tube size and airflow matter more than core...
3 min read
Aluminum Radiator
C4 Corvette Radiator Interchange Guide: 1984 vs. 1990+ Cooling Upgrades

C4 Corvette Radiator Interchange Guide: 1984 vs. 1990+ Cooling Upgrades

If your C4 Corvette is constantly fighting heat soak or...
3 min read
2004 Dodge Ram 5.9L Cummins Leaking Heater Core: Stop Leak or Permanent Fix?

2004 Dodge Ram 5.9L Cummins Leaking Heater Core: Stop Leak or Permanent Fix?

If your 5.9L Cummins is leaving a coolant puddle under...
3 min read
Dodge Ram
2006-2011 Honda Civic FG2 FA5 8th Gen Performance Upgrades and Tuning

DIY: 8th Gen Honda Civic Mishimoto Radiator and Silicone Hose Install

Step-by-step guide to installing an aftermarket Mishimoto aluminum radiator and...
3 min read
8th Gen Civic
2006-2011 Honda Civic 8th Gen Performance Upgrades and Tuning

How to Replace the Primary O2 Sensor on an 8th Gen Honda Civic

Step-by-step DIY guide to replacing the primary upstream O2 sensor...
3 min read
8th Gen Civic
2006-2011 Honda Civic 8th Gen Performance Upgrades and Tuning

How to Replace the Knock Sensor (P0325) on an 8th Gen Honda Civic

Fix DTC P0325 and restore lost engine performance on your...
3 min read
8th Gen Civic
2006-2011 Honda Civic 8th Gen Performance Upgrades and Tuning

DIY: How to Install a Header or Race Downpipe on an 8th Gen Honda Civic R18

Step-by-step guide to installing an aftermarket header and test pipe...
3 min read
Downpipe Install
2006-2011 Honda Civic 8th Gen Performance Upgrades and Tuning

DIY Short Ram Intake for Honda Civic R18 (8th Gen)

Step-by-step DIY guide to building a custom short ram intake...
3 min read
Airbox Mod
2006-2011 Honda Civic Si FA5/FG2 Performance Upgrades and Tuning

DIY Guide: Installing a Thermal Intake Manifold Gasket on the 8th Gen Honda Civic Si

Step-by-step guide to installing a Hondata or P2R thermal intake...
3 min read
Cold Air Intake
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