i have a astra mk4 2.0 ltr sri. it has a single exhaust pipe at the d moment. i want to know is that damaging my car because not enough power coming thru. or do you recommend a twin pipe exhaust. also...
my car drinks too much petrol. i have a 2.0 ltr astra sri mk4. i dont get 35 miles with ?20 fuel. is it because i have a single exhaust on. please help.
hi i have a astra mk4 sri 2.0 ltr. it has a single exhaust on at the mo. is that drinking xtra petrol and is it damaging my engine coz i know there is not enough power coming out at the moment. if i...