Stock 250 Sport Exhaust Piping: What the 3-Inch and 2.5-Inch Sizes Mean
Stock 250 Sport exhaust runs 3 inches into the muffler and 2.5 inches out to the tips — here’s why those diameters differ and what it means for fitment.
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Tuning in Tight Spaces: How Engine Bay Clearance Affects Your Build
Engine bay space is one of the most underrated factors when tackling tuning issues. Here’s how clearance affects everything from sensor access to intercooler fitment.
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Crow Cams Pushrod Lengths on the L67: Which Size Is Intake and Which Is Exhaust?
Got two different pushrod lengths in your Crow Cams Stage 3 kit for the L67? Here’s how to work out which goes on the intake side and which goes on the exhaust side.
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392 Cam in the 2015 5.7 Hemi R/T: The Complete VVT Parts List
The 6.4L 392 cam fits the Gen III 5.7L Hemi, but the 2015 R/T’s VVT system changes the parts list. Here’s exactly what the Eagle-head version needs to do it right.
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Harmonic Damper Weight and the Inertia Ring: What Actually Matters for Ford Inline-Six Builds
Total damper weight isn’t the number that matters. Here’s how inertia ring mass, compliant elements, and diameter interact — and what that means for Ford 200ci serpentine builds.
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O2 Sensor Not Ready on a New Car: The GM Drive Cycle Fix for California Registration
O2 sensor showing ‘not ready’ on your new Corvette? It’s almost certainly a drive cycle issue, not a broken sensor. Here’s exactly how to fix it.
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Stock 250 Sport Exhaust Pipe Sizes: Why the Step-Down from 3-Inch to 2.5-Inch After the Muffler Makes Sense
The 250 Sport runs 3-inch pipe to the muffler and 2.5-inch from there to the tips. That step-down is intentional — here is the engineering behind it and what it means for aftermarket fitment.
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Secondary Cat Delete Without a CEL: How O2 Sensor Placement Changes Everything
How O2 sensor bung placement determines whether a secondary cat delete trips a CEL, plus the legal and performance reality of straight-pipe exhaust mods.
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Viofo A119 V3 Power Wiring: Mini USB, Cigarette Lighter Adapter, and Hardwire Kit Explained
The Viofo A119 V3 uses a Mini USB connector on the camera end. Here’s how the included cigarette lighter setup works, when to use the HK3 hardwire kit, and what to watch out for with replacement cables.
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1965 L78 TI Ignition: Why Your Car Dies When Hot and How to Diagnose It
If your 1965 L78’s transistor ignition quits after 45 minutes and restarts after cooling, here’s a step-by-step guide to diagnosing the TI amp, coil, and pickup coil.