The Best Bolt on Performance Upgrades for Late Model Porsches

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Porsche Reinvents the Flat 4 with Turbos

718 Flat Four lrgIt has been over 20 years since Porsche produced a 4 cylinder engine (968 - Circa 1995) and 40 years since they made a flat-four engine (914 - Circa 1976). This latest earth shattering news from Stuttgart rivals the unexpected announcement of Porsche turbocharging the coveted naturally aspirated Carreras. This unprecedented move from flat-six to flat-four engines will first be realized in the new 718 Boxster and eventually in the next generation Cayman. This decision is no doubt fueled by Porsche’s need to produce performance engines that burn cleaner and have improved fuel economy.

What Porsche has taken away in displacement and cylinders, it’s has generously compensated with increased power and torque thanks to a single turbocharger. The base 2.0L 718 Boxster delivers 296 HP and 280 Torque, representing a 25 HP and 66 Torque increase over the old 2.7L six. The 2.5L S version also benefits from a 25 HP increase over its predecessor (the 3.4) with a total of 345 HP and 310 Torque representing a gain of 37 Torque.

Economy has improved significantly with the standard car up 5.1 mpg to 40.9 mpg, and the 2.5-litre S getting a 4.3 mpg bump to 38.7 mpg (with PDK). Both S and Non-S flat-fours should sound better than an inline four, especially being powered by a single turbo. The 2.5L S engine will further benefit from Porsches Variable Turbine Geometry (VTG) turbocharger found on the Turbo and Carrera models.

More power usually means increased performance and the new 718 delivers. With PDK and Sport Chrono Package, you’ll get the 718 Boxster from 0-62mph in 4.7 seconds (a 0.8sec improvement), with the S model doing the same in 4.2 seconds (0.6sec quicker than before). Advertised top speeds are 170mph in the Boxster, and 177mph in the Boxster S.

But the biggest question is… How much will the new turbocharged flat-four engines benefit from an IPD Plenum? We think it’s fair to assume that what performs very well on a flat-six should also perform very well on a flat-four. The better question is not, will an IPD Plenum improve performance? But how much will an IPD Plenum improve performance? That answer will be coming soon enough. Until then the only thing we know for sure is that R & D on the 718 Plenum will begin as soon as we receive the parts and testing will commence as soon as the prototype Plenums meet their subject.

991.2 Turbo Plenum & Y-Pipe in the Werks

Porsche has once again elevated the performance bar of the Porsche Turbo. The new engine produces 20 more HP (560 vs. 580 with S models) over its predecessor and propels the new Turbo to a top speed of 205 mph. The slightly upgraded engine benefits from revised intake ports, larger injectors, higher volume fuel pump, larger turbo compressor wheels and more efficient intercoolers.

The 991.2 Turbo IPD Plenum should develop virtually identical power (40+) and torque gains (45+) as the previous 991 Turbo model. Y-Pipe performance gains should also be similar, delivering approximately 35+ wheel HP and 40+ wheel Torque gains. IPD takes delivery of its 991.2 Turbo next month (April) so stay tuned for more details coming your way this Spring. Until then you can enjoy this incredible video from Porsche that provides you with an “inside look” at the latest Turbo offering.