Akrapovic Race Line Exhaust System for Porsche 911 GT3 (991.1)

SO - Slip-On

Slip-on system (S-PO/TI/15) for GT3 RS / Speedster OPF model must be mandatory combined with:

• Evolution Header Set (E-PO/T/6/1)
• Tail pipe set TP-T/S/19. 

When combining the slip-on system with optional carbon fibre diffuser DI-PO/CA/7/G, you must use tail pipe set TP-T/S/17.- An additional original Porsche stock bracket (Porsche p/n: 99111147391) is required for mounting the Akrapovic exhaust system. 

Please read the instructions carefully before the start of the installation.This Slip-On Race system (S-PO/TI/8) must be upgraded into a full Akrapovic Evolution Race Line exhaust system by combining it with the Evolution Header Set (E-PO/T/6) with side mufflers and valves, which is designed to supplement the performance at higher revs.

With complex parts cast in Akrapovic’s own titanium foundry, the expertise used in this system, and the coating finish, the system demonstrates the highest standard of workmanship and technology. Incorporating 100 cpsi sports catalytic convertors in the exhaust manifold and side mufflers, the Evolution Race Line utilizes integrated catalytic convertors and the functionality of the exhaust valves to deliver a complete workout for the senses. The system offers a near-perfect power curve, along with an altered torque distribution, all designed to continually deliver performance as the revs rise. The use of lightweight materials results in big weight savings, and the addition of the Evolution Race Line will have the car performing like a true cup racer, with a powerful racing sound that resonates with every push of the accelerator pedal, producing a deep, pure racing growl to match the performance

The mandatory tail pipe set TP-T/S/19 needs to be ordered separately. When combining the slip-on system with optional carbon fibre diffuser DI-PO/CA/7/G, you must use tail pipe set TP-T/S/17.An additional original Porsche stock bracket (Porsche p/n: 99111147391) is required for mounting the Akrapovic exhaust system. Please read the instructions carefully before the start of the installation.When installing Akrapovic aftermarket optional link pipes with sports catalytic converters or without catalytic converters, which are developed for use on closed tracks only, remapping the ECU is mandatory. When installing Akrapovic aftermarket exhaust system that was developed for use on closed tracks, we recommend remapping the ECU in order to prevent potential »check engine light« warning signals.

THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE.

PERFORMANCE:

	Unit	Stock	Akrapovic	Max gain
Maximum power	kW	395.6 / 5300 rpm	402.7 / 5450 rpm	+ 8.2 / 5600 rpm
	HP (m)	537.9 / 5300 rpm	547.5 / 5450 rpm	+ 11.1 / 5600 rpm
	HP (i)	530.5 / 5300 rpm	540.0 / 5450 rpm	+ 11.0 / 5600 rpm
Maximum torque	Nm	797.2 / 5300 rpm	800.3 / 5450 rpm	+ 16.6 / 2400 rpm
	lb-ft	588.0 / 5300 rpm	590.3 / 5450 rpm	+ 12.2 / 2400 rpm
Installation time	min		300

Evolution Header Set converts the slip-on system into a full  Evolution Line system designed to give noticeably increased power at higher revs. With superb attention to detail, including parts cast in Akrapovic’s own titanium foundry, the craftsmanship and coating finish on the system is a joy to behold.

With a newly developed exhaust manifold, incorporating 100 cpsi sports catalytic convertors and side mufflers—all designed to increase power and torque—the Evolution Line utilizes integrated catalytic convertors and the functionality of the new exhaust valves to deliver an out-and-out attack on the senses. With the valves in the open position, the Evolution Line sounds like the top-performing Evolution Race system, but also has the option of a lower sound level when the valves are closed, perfect for use in more everyday locations. Offering an increased weight savings in the area behind the engine and the rear axle, the reduction will enhance the handling and improve performance.

The Evolution Line is also tuned to deliver a sportier and hard-hitting sound—in open valve mode, the more the engine is revved the better the sound gets—as well as increasing performance, all to provide an even greater sensory experience. With the addition of the handcrafted high-quality optional carbon- fibre rear diffuser, the Evolution Line will show that the GT3 means business even when it’s standing still.

When installing Akrapovic aftermarket optional link pipes with sports catalytic converters or without catalytic converters, which are developed for use on closed tracks only, remapping the ECU is mandatory. When installing Akrapovic aftermarket exhaust system that was developed for use on closed tracks, we recommend remapping the ECU in order to prevent potential »check engine light« warning signals.

THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE.

PERFORMANCE:

	Unit	Stock	Akrapovic	Max gain
Maximum power	kW	345.7 / 8450 rpm	351.2 / 8400 rpm	+ 10.0 / 8000 rpm
	HP (m)	470.0 / 8450 rpm	477.5 / 8400 rpm	+ 13.6 / 8000 rpm
	HP (i)	463.6 / 8450 rpm	471.0 / 8400 rpm	+ 13.4 / 8000 rpm
Maximum torque	Nm	426.2 / 6450 rpm	437.4 / 6350 rpm	+ 27.3 / 3850 rpm
	lb-ft	314.3 / 6450 rpm	322.6 / 6350 rpm	+ 20.1 / 3850 rpm
Weight	kg	38.9	24.8	- 14.1
	lb	85.8	54.7	- 31.1
	%			- 36.2
Installation time	min		200

Evolution Race Header Set converts the slip-on system into a full system, built for the track and gives the Porsche GT3 the extra performance to match. Beautifully made from hi-grade titanium and with a coating, the Evolution Race Line is as striking to look at as it is use. From the handcrafted titanium headers with 100 cpsi sports catalytic convertors and titanium flanges—cast in Akrapovic’s own foundry—right through to the superbly finished round titanium tailpipes, the Evolution Race Line is pure quality.

The system offers a perfect power curve right from 3,000 rpm to the very top of the power band, designed to continually increase performance as the revs rise. Along with improved torque and the maximum weight savings to enhance handling, the Evolution Race Line exhaust system will have the car performing like a true cup racer—with a deep, loud, and powerful Akrapovic racing sound to match its performance.

The assault on the senses from the Evolution Race Line system can be boosted even further with the addition of the perfectly handcrafted optional carbon- fibre diffuser. Made exclusively for the Porsche GT3, this beautiful add-on will make a statement both on and off the track.

When installing Akrapovic aftermarket optional link pipes with sports catalytic converters or without catalytic converters, which are developed for use on closed tracks only, remapping the ECU is mandatory.

When installing Akrapovic aftermarket exhaust system that was developed for use on closed tracks, we recommend remapping the ECU in order to prevent potential »check engine light« warning signals.

THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE.

PERFORMANCE:

	Unit	Stock	Akrapovic	Max gain
Maximum power	kW	345.7 / 8450 rpm	354.2 / 8400 rpm	+ 19.9 / 3950 rpm
	HP (m)	470.0 / 8450 rpm	481.6 / 8400 rpm	+ 27.1 / 3950 rpm
	HP (i)	463.6 / 8450 rpm	475.0 / 8400 rpm	+ 26.7 / 3950 rpm
Maximum torque	Nm	426.2 / 6450 rpm	436.7 / 6400 rpm	+ 50.6 / 3900 rpm
	lb-ft	314.3 / 6450 rpm	322.1 / 6400 rpm	+ 37.3 / 3900 rpm
Weight	kg	38.9	16.7	- 22.2
	lb	85.8	36.8	- 49.0
	%			- 57.1
Installation time	min		200

Designed and constructed exclusively for the Porsche 911 GT3 (991) and GT3 RS (991), the Akrapovic dB reducer (Titanium) is aimed at driving enthusiasts who need to keep the noise of the exhaust within approved levels during track-day use.

Made from high-grade lightweight titanium, the dB reducer works like an additional muffler to allow extra expansion of the exhaust gases. It is easily fitted by simply removing the Akrapovic tailpipe set and then mounting the dB reducer in place.

After installation, the Akrapovic dB reducer (Titanium) reduces dynamic sound levels* by approximately two or three decibels** while still retaining the unique Akrapovic sound and character. It is designed to fit and reduce the measured dynamic sound levels of all Akrapovic systems for the Porsche 911 GT3 (991) and GT3 RS: the Slip-On Line (Titanium), Evolution Line (Titanium), Sports Cup Line (Titanium), and Evolution Race Line (Titanium).

The Akrapovic dB reducer (Titanium) is also totally compatible with the optional Akrapovic carbon-fibre diffuser, which is available for the Porsche 911 GT3 (991).The Akrapovic dB reducer (Titanium) fits also to the stock exhaust system of the 911 GT3 (991) and GT3 RS (991);

Dynamic sound levels apply to a moving vehicle and not the volume from a static vehicle.**Noise reduction value is relative (or may vary) due to various noise-measuring methods used and external conditions at different racetracks.

PERFORMANCE:

	Unit	Stock	Akrapovic	Max gain
Installation time	min		150

Top the system off with a pair of eye-catching double round tailpipes, made of high-grade titanium. 

Made specifically for the GT3 RS (991.2) version.

PERFORMANCE:

	Unit	Stock	Akrapovic	Max gain
Installation time	min		150

EV - Evolution

Link pipe set (Titanium)was tested and developed together with Slip-On Race Line (Titanium) system.Adding the link pipe set is the second step in the exhaust tuning process.

Combination with Slip-On Race Line retains the original Porsche GT3 RS exhaust manifold, utilizing the existing integrated catalytic convertors.

The perfectly balanced titanium slip-on system and superbly fitting link pipes are all set off with a pair of beautiful titanium tailpipes. Developed primarily for track use, the Slip-On Race Line with Link Pipe Set (Titanium) increases power and torque levels and with the huge reduction in weight in the area behind the engine and the rear axle (in comparison to the original system) handling is improved to make the car and exhaust work in perfect harmony.

When installing Akrapovic aftermarket optional link pipes with sports catalytic converters or without catalytic converters, which are developed for use on closed tracks only, remapping the ECU is mandatory.

When installing Akrapovic aftermarket exhaust system that was developed for use on closed tracks, we recommend remapping the ECU in order to prevent potential »check engine light« warning signals.

THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE.

PERFORMANCE:

	Unit	Stock	Akrapovic	Max gain
Maximum power	kW	433.1 / 5950 rpm	444.0 / 5850 rpm	+ 13.8 / 3500 rpm
	HP (m)	588.8 / 5950 rpm	603.7 / 5850 rpm	+ 18.8 / 3500 rpm
	HP (i)	580.8 / 5950 rpm	595.5 / 5850 rpm	+ 18.5 / 3500 rpm
Maximum torque	Nm	873.6 / 3650 rpm	908.5 / 3700 rpm	+ 35.9 / 3350 rpm
	lb-ft	644.3 / 3650 rpm	670.1 / 3700 rpm	+ 26.5 / 3350 rpm
Weight	kg	7.8	3.7	- 4.0
	lb	17.1	8.2	- 8.9
	%			- 52.0
Installation time	min		180

Designed to make the GT3 stand out from the crowd even more, the visual delight of Akrapovic exhaust systems can be further enhanced with the addition of an optional carbon fibre rear diffuser.

It’s beautifully handcrafted from the finest materials and is designed to enhance the exclusive look of the titanium tailpipes. The ABE type-approved diffuser is a must-have extra for any discerning owner and shows that the GT3 means business, even when it’s standing still.

This product does not fit on GT3 RS model.

PERFORMANCE:

	Unit	Stock	Akrapovic	Max gain
Weight	kg	2.3	1.0	- 1.3
	lb	5.1	2.2	- 2.9
	%			- 56.5
Installation time	min		60.0