IPE Cat-Back Exhaust Porsche 911 GT3 GT3 RS 991 2014-2019

The 991 GT3 and GT3 RS rev to the moon, and IPE's header-back style cat-back gives them a harder edge. Pick stainless or titanium, choose your tips and decide how you want the valves controlled.

About IPE

IPE, also written iPE, started in 1998 as Innotech Performance Exhaust and now supplies valved exhaust systems for sports and supercars. Builds use T304 stainless steel and Grade 1 titanium, with TIG welding for strong, clean joints. AutoTalent is a US dealer for the IPE line.

Material and build

• T304 stainless steel, handcrafted and TIG welded by IPE.
• Valvetronic muffler with actuated valves for a quiet mode and a louder open mode.
• The cat-back comes in T304 stainless steel or Grade 1 titanium.
• Stainless starts with Chrome Silver tips. Titanium starts with Polished Silver tips.

How the Valvetronic muffler works

With the valves closed, exhaust gas takes a smaller path, which keeps the car quiet around town and on the highway. With the valves open, the gas has a freer route out, and the car gets louder with a more open tone. IPE's systems offer On, Off and Auto modes. In Off mode the valves open on their own at 4,000 RPM as a safeguard.

Remote control and the optional OBD remote

Every system with the remote option comes with IPE's Bluetooth remote control module. You pick the mode from the remote, and it needs IPE's accelerator signal line installed and set up for Auto mode.

The optional OBD remote adds IPE's OBDII hand gesture sensor. It connects through the car's OBDII port and talks to the car over CAN, so you switch modes with a hand gesture. It works only if the car supports CAN communication and has no other OBD devices in the port. It is an add-on to the remote, not a replacement for it.

Choose your options

• Exhaust System and Tip Finish: Pick stainless or titanium together with the tip finish. Titanium adds $1,100 to the base price, and the upcharge for each tip is shown in the choice.
• Optional OBD Remote: These cars can keep the factory valve control. IPE's remote adds $280 and the OBDII gesture sensor adds $570.

Good to know before you buy

• IPE says these cars work with the IPE remote and OBD control, or with the factory valve control.
• IPE says its headers with cats and muffler can be sold separately. Headers are not on this page.
• IPE uses the same cat-back part numbers on its 997 and 991 GT3 listings. Confirm the fit with us before ordering.
• Do not wash the tips with strong acid or harsh solvents. Light discoloration after heavy heat cycles is normal.
• IPE gives a one-year limited warranty from the ship date. It does not cover wear items such as gaskets, springs and heat wrap, or damage from poor installation. Tips are decorative, so IPE does not accept appearance returns once they are installed.
• Fitment follows IPE's price-list application. Confirm your car's configuration before ordering.

Vehicle fitment