996 GT2

The Porsche 996 GT2 is one of our primary marque's. After reviewing the factory exhaust, major flaws were pinpointed in all areas of the design, the sound being the most striking flaw. But also torque curves, peak power, and turbo lag were other areas that could be significantly improved. The factory exhaust is also needlessly heavy, and situated at the very rear of the car.

The Sound

The Factory setup produces the most lackluster sound, mainly due to a series of chambers, 600 cell catalysts, and the most prominent flaw being the lack of balance between opposing banks. Seriously, i would recommend when considering any aftermarket exhaust for a Porsche turbo, never buy an exhaust without some kind of gas balance between left and right banks. replacing the stock cats for a choice of 100cpsi, 200cpsi, or de-cat increases the sound respectively. Replacing the chambered transverse rear silencer with freeflow harmonically tuned silencers enriches the sound, and the addition of our trademark 1D CLR laminar flow X pipe raises the exhaust pitch beyond the region in which bass noise is able to penetrate the cabin, while under hard throttle and high revs, a rich and raucious vocal ensues. This design was pioneered and innovated by Kline, however several copycat designs have started to appear.

Performance

Being a turbo car, the potential for increasing performance via exhaust and software is huge. The largest gains with our De-cat system are 40hp and 64nm. In conjunction with software we achieve 70hp and 94nm.

100cpsi and 200cpsi produce smaller gains of 21hp and 16hp respectively.

Build Time

Man hours
Manifolds 18 hours
Manifold Inconel 34 hours
Cat back system 14 hours
Cat back Inconel 30 hours
Tails 12 hours
Total 44 hours (1 week)
Total Inconel 76 hours (1.7 weeks)

THE SPECIFICS

Cross Section

De-cat cross section 70mm OD specifically chosen for a balance of peak torque and power.

Silencer section, cross section 63mm OD

Catalysts come in a variety, from 108mm OD to 127mm OD

manifold primaries, 41mm OD, chosen specifically for faster turbo spool

Materials

Turbo back system
Available in standard 304 grade stainless steel, weight 14kg 200cell cats, 12.5 with de-cat
Inconel 625 formula one grade material, weight 7.0kg decat variant. 10.1kg 100 cell cats
Titanium G2 silencer section is also available, weight, 11.5kg 100 cell cats

Manifolds
Standard 304 grade stainless, weight 6kg total
Inconel 625, weight, 2.9kg total
Titanium unable to endure extreme heat

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