Fact Check: R-Tech claims the IS38 likes backpressure
Background: In late July, a discussion took place about a UK tuner, R‑Tech, who refused to tune a customer’s IS38-equipped MQB unless a resonator was added to increase exhaust backpressure. This raised two issues that should matter to Mk7 owners: how misinformation spreads, and how authority bias leads enthusiasts to accept claims that contradict fundamental
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