exhaust enquires

CMF_sukoo

» CMF Member
Member since:
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hi guys
need some opinion on some small exhaust problem
my frez his car is using a hotbits 4-2-1 extrator and a 1.6 inch piping all the wat to the back the rear muffler is a legal remus exhaust wif diameter of 1.5 inch it been connected at the flange at the back

so far the power wise is not bad
but he wish to know if the front extractor remain but the mid piping of the car increase to 2 inch and the rear box remain at 1.5 inch will the high end ever suffer?

tink low end will further improved by tis setting but then if let say i on 5th gear goin up a slope chance is that i need to downshift as compared to the smaller piping

haf anyone haf such a setup?
thank
 
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