Post by
DaniMike »
https://forums.nicoclub.com/danimike-u57925.html
Sun Apr 22, 2012 3:23 am
Adding a 3" will not get you any better mpg...
Nothing wrong with a $150 exhaust tho, just get the hangers re welded. They are almost guaranteed to be crooked and weak.
So, $150+ $40 for re-weld gets you a decent exhaust!
Clean MAF, IACV, fuel filter, spark plugs, wires, full tune up, proper tires and pressure and alignment could all help with mpg. 3" will not help, but as long as you keep your stock cat (assuming it isn't clogged or broken) you won't be hindered by a 3" catback.