The S13 I recently bought has a blacktop S13 SR in it, with a front mount setup. The cold piping is all aluminum, very sturdy.
The hot piping is stock shitty rubber hose and couplings. Also, the elbow connected to the compressor outlet is bent a little past 90", so it's kinked a little bit.
How much of a performance benefit would I really see from installing an aluminum/steel hot pipe? I'm on a budget here so I'm pretty much counting the pennies on every mod I do
