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215-646-4945

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Fabspeed Porsche 986 Boxster Maxflo Performance Exhaust System (1997-2004)

6 reviews Write a Review

2156464945

SKU:
FS.POR.986X.MAXXX
HP (whp):
+8
TQ (ft/lbs):
+8
WT (lbs):
-30
edd:
1
Ships By: April 29, 2025

Dramatically improve sports car sound and throttle response with upgraded Maxflo mufflers and inlet tubing. Includes Deluxe Bolt-On Dual Style Tips in your choice of finish to compliment your vehicles look and style.                                                            

FEATURES:

  • Fits all Porsche 986 Boxster / S vehicles (1997-2004) (Please see notes below for EU and rest of world car fitment)
  • Includes Deluxe Dual Style Tips in your choice of finish
  • Improves power by 8 whp and 8 ft-lbs of torque
  • Saves 30 lbs from the rear of the vehicle compared to the full OEM exhaust system
  • Does not trigger check engine light
  • Constructed from high quality 14-16ga CNC mandrel-bent T304 stainless steel for maximum performance and durability
  • Noticeable improvement in sports car sound and throttle response
  • Direct replacement for the OEM muffler with no cutting or welding required
  • All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty

NOTE:

  • 1997-1999 and 1997-2004 EU and R.O.W. Boxster Maxflo STREET exhaust system includes HJS sport catalytic converters to remain emission compliant with no CEL's
  • 2000-2004 US cars have two sets of catalytic converters, Our 2000-2004 system deletes the redundant secondary catalytic converters. This will NOT cause a CEL.
  • 1997-1999 986 Boxster Maxflo RACE Performance Exhaust catbypass pipes with O2 bungs in the factory position, and is recommended for Off-Road Track Use Only

Why We Choose HJS Catalytic Converters: 

HJS German imported catalytic converters are made from some of the highest grade materials you can find in a catalytic converter. This yields high performance gains and longevity so it wont deteriorate over time like lower grade catalytic converters. These catalytic converters flow up to 93-95% of a straight pipe in most applications. The benefit is that you get the "straight pipe sound" while still being able to provide enough emissions scrubbing to prevent a check engine light.    If you'd like to learn more, watch our video about HJS catalytic converters.

Sport Catalytic Converter (STREET) - This product removes the OEM catalytic converters from the vehicle, and as such, is strictly intended for closed track events and off-road use only. This product contains a High-Flow Sport Catalytic Converter solely intended for track and race cars as it is NOT California Air Resources Board Certified and not EPA certified. You are hereby informed and warned to check your local, state, and federals laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts.

Cat Bypass (RACE) - This product removes the OEM catalytic converters from the vehicle, and as such, is strictly intended for closed track events and off-road use only. This product is or contains a Racing Cat Bypass Pipe, which will give you check engine lights on OBD2 cars. Racing Cat Bypass Pipes are solely intended for track and race cars as they are NOT California Air Resources Board Certified and not EPA certified. You are hereby informed and warned to check your local, state, and federals laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts.

  • Maxflo exhaust
    5

    Posted by Jason on 1st Oct 2023

    I should have done this 15 years ago when I bought my Boxster S. It was easy to install and the sound is better than I had imagined. Combined with sport/race headers, I can tell a difference in acceleration for sure. With the top down it really does sound amazing. At highway speeds, there is little to no drown. At lower speeds when RPM's are 2000-2800 there is some drown. But I don't usually stay at that RMP for long :) Side note, the mufflers are polished and really nice looking. There are laser engraved logo's on the pipes too. Worth the money.

  • How a Porsche should sound
    5

    Posted by Keith Bickford on 27th Dec 2022

    I could not be more pleased with the 986 Maxflo exhaust system. Installation was a snap, and the sound is wonderful. The sound is very tolerable at highway cruising speeds, and it comes alive when the pedal goes down. The sound is so smooth with just a little burble on downshift. I have cat free headers and the Maxflo for 2000-2004 Boxster without cats. I feel this setup would greatly benefit from the Fabspeed tune and intake system. I will do all of this in time.

  • STUNNING sound
    5

    Posted by David M on 25th Jun 2022

    smooth exhaust note that opens with a deep bellow and ends in a creamy shout. not too loud, definitely not too quiet- this volume was exactly what I wanted. shipping took a bit long (understandable), but customer service was great (someone answered my questions every time I called in for an update). only downside is that the tips stick out a bit too much for my taste, but it's a minor thing and you'll forget about it once you hear that flat 6 under load. great quality welds and engraving, overall high-level product. can't wait until I get bored of this volume, I'll be back for headers!

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