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Tuning Knowledge
& Insights

Learn the fundamentals
behind performance tuning.
Explore the newest articles on tuning, diagnostics,
and what your logs are actually telling you.

Articles for: STI tuning

Do Aftermarket Boost Controllers Actually Improve STI Response?

Stock STI boost control overshoots target pressure by 2-4 PSI during gear changes, creating hidden stress on internals. Aftermarket controllers maintain precise target pressure, eliminating these damaging spikes.
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Is E85 Worth It for STI? Real Data on Power vs Complexity

E85 conversion on your STI isn't just about peak power gains. The real advantage is knock resistance that lets you run 2-3 degrees more timing advance, but only if you monitor ethanol content religiously.
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Why Do Big Intercoolers Kill Power? The Pressure Drop Problem

That massive front-mount intercooler dropping your charge temps 25°C sounds great until you see the dyno sheet. The real story is in the pressure drop data your tuner should have checked first.
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