Mean 300km/h Audi RS5 by MTM

German tuner MTM is known for its high powered mean looking Euro machines and has been at it again. This time they got a hold of the new Audi RS5, sprinkled a bit of tuning dust and ended up with this mean red 300km/h machine.

However, instead of taking the entire car apart and reworking it like most tuners do, this MTM Audi RS5 is stock standard. MTM simply upped the speed limiter to allow for a higher top speed, all that for a cheque of US$1,429.

According to MTM, the RS5 powerplant still produces 450hp but that could be turned up a few more figures thanks to the company's new free-breathing exhaust system. To match the go, MTM also offers plenty of show in the form of new wheels, but that's it for now. Currently in the development process, MTM will soon introduce a complete suspension kit as well as very competent brakes for the RS5. For now, MTM fans are going to have to make do with a higher top end and mean rims.

Fully restored to new, 516hp Nissan Skyline R34 Z-tune

A Nissan GTR R34 is still one of the most desirable machines to come out of Japan, high up there with the NSX-R, R35 GTR, and other iconic Japanese machines. Sadly, they are aged and finding a used example in near perfect condition is close to impossible. Well almost impossible.

German tuner JAPO Motorsport is offering a near brand-new R34 GTR NISMO Z-tune for those willing to fork out the cash for it. The Essen-based tuner bought a stock 1999 GT-R and spent a lot of time and money tearing it apart and restoring it as close to the original as possible.

In putting it all back together, the tuner used original Z-tune parts (like the front skirts, mudguards and rear wheel housing) and original sil "KY0" paint which was exclusive to the Z-tune back then (only 20 Z-tune's were made). Also part of the package are NISMO Z-tune five spoke wheels, Toyo semi-slick tires, alcantara leather upholstery, an updated multifunctional display, and a revised speedometer that now tops out at 320km/h.

The exterior is completely stock but the German tuner could not hold back from working on the internals. Power from the 2.5-liter straight six is now up thanks to GT RS turbochargers, a new intercooler, a racing suction/chamber kit, enhanced fuel injectors, and high performance spark plugs.

These mods contribute to the 516hp and 597Nm of torque that the new Z-tune now boasts. Just for the record, a standard R34 Skyline GTR churns out 327hp and 392Nm of torque while the standard Z-tune boasted 493hp and 540Nm of torque.

Other upgrades include a HKS clutch kit, an ARC strut bar, and StopTech brakes. There's no indication of how much the entire restoration process costs but the restored GTR seen in the pictures here is available for sale for a princely sum of US$116,960.