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Evolve

Evolve BMW M3 E90 E92 E93 (E9X) S65 V8 Primary Cat Delete / Decat Test Pipes, Catalyst Bypass Pre-Cat Front Pipes, Catless Downpipes – Fits

Evolve BMW M3 E90 E92 E93 (E9X) S65 V8 Primary Cat Delete / Decat Test Pipes, Catalyst Bypass Pre-Cat Front Pipes, Catless Downpipes – Fits

£299.00
£299.00 £299.00
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Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.

Evolve M3 E9X S65 Primary Catalyst Bypass Pipes - EVEE9XM3CATPIPE

Unlock serious performance from your BMW M3 V8 with Evolve primary catalyst bypass pipes. By removing the restrictive front catalysts on the S65, these front section pipes free up flow, sharpen response and add proven power while keeping the installation neat, reversible and compatible with the standard centre crossover.

Key benefits

  • Dyno proven gains of 20 bhp and 20 lb-ft
  • Clamp-on slide fit - no welding required
  • Integrates with the factory centre crossover for an OE-style install
  • Outstanding value front section upgrade compared with full centre replacements
  • Supplied with 2 new gaskets for correct sealing
  • ECU recalibration required to clear the engine light - mapping typically releases additional performance
  • Engineered by Evolve - backed by a 1 year Evolve warranty
  • Part number: EVEE9XM3CATPIPE

Why it works

The stock primary catalysts are a major choke point on the E9X M3. Swapping to these primary delete pipes reduces back pressure and lets the S65 breathe properly, delivering stronger mid range torque, harder top end pull and a more engaging drive. The result is a V8 that feels keener across the rev range with a deeper, motorsport-inspired tone.

Compatibility

BMW M3 E90 saloon, E92 coupe, E93 convertible with the S65 V8. Designed to mate to the standard centre crossover section for a clean, factory-style connection.

Real-world results

We have supplied and fitted these on customer M3s and the feedback has been superb. Owners report crisper throttle response, a harder hit through the mid range and a noticeable increase in urgency to the redline. If you are searching for a primary catalyst removal solution that keeps the OEM centre section and delivers genuine gains, this is the proven choice.

Performance data

+20 bhp and +20 lb-ft from removing the restrictive front catalysts. An ECU map is required to clear the warning light and typically adds further power when combined with these pipes.

Evolve E9X M3 S65 primary catalyst bypass pipes dyno chart

What you receive

  • Pair of Evolve primary catalyst replacement pipes for BMW M3 E9X S65
  • 2 x new gaskets

Installation and mapping

Professional fitting recommended. For installation and ECU tuning support, book with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Manufacturer and warranty

Manufacturer: Evolve

Warranty: 1 year Evolve warranty

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