Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

Audi TTS Limited Edition coming to the UK. Price from £38,860

Audi TTS Limited Edition marks 500,000 TT sales In some ways the Audi TT seems to have been around for ever, although it was actually launched in 1998 and garnered fame as a bit of a softy aimed at hairdressers and others who valued cosmetics over ability. But the latest Audi TT is a much better car and does offer real performance and real driving fun, especially if you opt for the TT RS. In the fifteen years since the TT launched, Audi has managed to flog 500,000, and to celebrate we’re treated to a new TT limited edition – the Audi TTS Limited Edition – which comes with cosmetic tweaks and as a coupe or roadster.

Tomorrow’s world: Fiat's MultiAir engine tech

By Jesse Crosse Motor Industry 14 October 2009 16:50 Fiat this year launches what it claims is a big step forward in variable valve timing: MultiAir. It's the first time that a manufacturer has made a properly variable valve system a production reality, and will slowly be rolled out across most of Fiat's and Alfa's car ranges.How does Fiat's MultiAir vary from existing variable valve timing (VVT) systems?Current VVT systems rely on mechanical systems to open and close the valves. Engineers have long understood the benefits of changing valve opening and closing times to tweak an engine's power and emissions performance, depending on the need for power or parsimony.Valves are an engine's nose and mouth – it inhales through inlet valves and exhales through exhaust valves.

Senate passes cash-for-clunkers extension

The Senate added $2 billion to "cash for clunkers" on Thursday, ending a week of suspense about whether the popular new program would have to shut down for lack of funds. The bill, identical to the one that passed the House last week, now goes to President Barack Obama for his signature. The administration has pushed hard for the new funding.