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98 polo is basically the same car as the cordoba... Exhaust pipe is self made/welded. Now I get 3.3 litres/100km consumtion if I drive speeds under 110 km/h.
Rob in petrol car the exhaust noise will rise much more than in diesel if you delete your rear muffler. The turbo works as a muffler and reduces the exhaust noises pretty much.
What comes to the cams, they dont wear if you use right oil and change it regularly :/.
At the moment I am disapointed that I havent got any time to do mods in my car at last one and a half month. Next week I will try to finish my glassfibre hood.
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