Hi people bin n ex Sierra driver and wants to get me one again, because is really n horny car Had for 1.5 years n 2liter OHC BJ. 86 and was fully satisfied with it. Then unfortunately it disassembled me in the winter with ice cream and had no buck there to rebuild everything because the insurance was too expensive for me. Had then jetz since over the year 3 different A Corsa and at the end jetz n GSi. Will necessarily have me again nSierra I thought so about n 2.0 DOHC What mic hjetz times interested is what you can do engine technology For Opel you find enough parts to do so that the things n bissel have more power but forn Sierra is somehow full mau must I say. What can you recommend me what to do for engine tuning at the Sierra? Where do you get the best cam waves and so what. How does n open air filter affect the sound, at the Corsa and at the Astra is that really cool, sounds like a pair of rims and then you can find the whole thing for Sierra?