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Can you tell me the difference btwn a standard s4 and an Abt tuned one. Is it worth the extra money?
Thanks

Mine has ABT remapped ecu,suspension,spoiler and rear box and used to have ABT 18" alloys.

It is supposed to have 315 bhp and 375lbs/ft torque

http://www.abtsportsline.co.uk/cars.php ... 2&model=19

check this site

My first S4 had an ABT upgrade. After sorting a faulty MAF, it made 340bhp and 400lbs torque. Amazing difference but expensive at £2k.