May day May day....calling all iswara sifus for help/advice....i drive a proton iswara a/b 1.3 yr 2002....just did minor mod lar...on the exhaust..mid section to rear muffler. My problem is my engine got noise comming out when revving :frown: ....when go up hill/slope the noise got louder :frown: ....how to rectify this??? This is not because the exhaust but some where from the timing belt side i guess.....any recommend workshop to tackle this problem ar?? the kind of noise i hear quite common from many proton owner.....dont how else to describe...anyone feel free to fill me in...thanks :)