Is this your truck or company truck. I work in dubai and i have my own truck(all commercial vehicles are registered with company names). Here the road are wide open and one trip is just like 1800-2200kms(round trip to Kingdom of saudi arabia). Here weather is very very hot(we take breaks after every 200-300kms or else tyres blow away in hot weather. We don't have taxes here in middle east and with some savings we make good money. Hope,if u pay taxes,you get total benefits.
Unfortunately it’s illegal here. 😄 People do put smokestacks on for cosmetic purpouses, but the fines would probably be very very high here for a complete straight pipe. 😴