Extracting over 500bhp from a four-pot engine is an impressive achievement. To get there, Siemoneit has fitted the Cupra with bigger turbos, a high-flow air intake and new intercoolers among plenty of other engine upgrades.
https://www.topgear.com/car-news/modified/tuned-seat-leon-has-more-power-rs4-or-c63?amp
Anybody?
https://www.topgear.com/car-news/modified/tuned-seat-leon-has-more-power-rs4-or-c63?amp
Anybody?