Frequently asked questions
Answers about sound, power, OPF, warranty and shipping for Fi EXHAUST.
How it works
How much louder is Fi EXHAUST vs OEM?
In closed mode — close to factory levels (comfortable for daily driving). In open mode — +5–8 dB with a sport baritone tone and characteristic crackles on deceleration.
How much HP does it add?
Base 'valvetronic catback' — +10–20 HP without chip tuning. With race downpipe — up to +5–10% over stock power. Exact figures depend on the model.
Will there be a Check Engine light?
No — with the genuine Fi EXHAUST OBD dongle. Plug-and-play, no reflashing. Catless race downpipe — requires an ECU tune.
Listen to different cars:
Install and ECU
How long does installation take?
3–5 hours at a shop with a lift. For supercars with plastic underbody (Lamborghini Huracan, Ferrari F8) — up to 8 hours.
Can I install it myself?
Technically possible. But warranty is only valid with installation at a certified shop. Risk of damaging the valve system.
Do I need ECU chip tuning?
No for valvetronic catback. For race downpipe — catless tune recommended. For maximum HP — Stage 1 ECU tune (optional).
Legal compliance
What is OPF / GPF version?
OPF (Otto Particle Filter) — particulate filter for gasoline car exhaust. EU requirement since 2019. Fi EXHAUST offers OPF and Non-OPF versions.
Will it pass EU vehicle inspection?
OPF version — yes, keeps factory filter and catalyst. Race / Non-OPF — no. Ukraine has no exhaust requirements.
Brand trust
How long does it last?
T304 steel — 100,000+ km under normal conditions. Titanium — 200,000+ km. Real owner reports.
Is the 24-month warranty real?
Yes. Details on the Warranty page. It's a manufacturer warranty, not seller's.
Original vs counterfeit — how to tell?
The original has: serial number on the muffler body, laser-engraved logo, certificate of quality in the box. Buy only from authorized representatives.
Logistics and terms
How long does it take to arrive?
In stock — ships same day. Made to order — 14–21 days. Details.
Can I return it?
Yes, 14 days if not installed. Return details.
Questions? Message us on Telegram
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