Greddy TI-C Exhaust Piping Gauge
 

Anyone know what the gauge of the steel piping of this exhaust? Also what type of steel do you think this is, 304? I know it's 70mm piping just like to know the gauge size. I'd like to guess 16G. I already run the silencers removed. Now I want to take the resonators out. Less weight, more sound, better flow.

Every aftermarket pipe I've seen is 16g. Since you're about weight I'd find 18g somewhere like most factory systems are. If it wasn't 304 I'd be surprised! Only cheap stuff like magnaflow and flowmaster use 409. 304 is not magnetic and 409 is magnetic. Also just FYI, when someone gives a size pipe most are OD. Tends to tick people off when they measure and its not ID and they wanted that for more flow etc.