BMW M3 F80: Stage 2 on hybrid turbos
431 hp stock, 620 hp on pump fuel after hybrid turbos and a 3" exhaust. Here is what we changed and why.
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Tuning projects, build reports and technical guides, no marketing, no rounding in our favour.
Hybrid turbochargers: what they are and when you actually need one
No marketing: how a hybrid differs from a stock turbo, what is replaced inside, and at which point it makes sense.
Read moreAudi RS3 8V: 500+ hp from the five-cylinder EA855 EVO
A hybrid turbo, exhaust and fuelling. What actually limits the five-cylinder engine — and where the sensible line runs.
Read moreDownpipes: what they really give, and what about the catalyst
Numbers without rounding in our favour: what changes on the stock map, what changes after calibration, and the trade-offs.
Read moreMercedes-AMG C63 S: Stage 2 on the M177
Hot-vee turbochargers, 700 hp, and the real question — what to do about the gearbox.
Read moreStage 1, 2 and 3 — what those numbers actually mean
There is no standard, and that gets exploited. Here is what each stage usually implies and what to ask before paying.
Read moreBMW M5 F90: 3.3" exhaust and Stage 1
The most underrated step on the S63B44 is the exhaust. We measured what downpipes give before any remap.
Read moreChoosing a turbocharger: five common mistakes
The mistakes that make an expensive turbo drive worse than the stock one. All five turn up regularly.
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