First of all sorry for my bad English.

I do tig welding for 2 - 3 month's now, so I'm a beginner. (I make nice mig welds but that's easy)

I have bought myself 2 Dynomax mufflers. One glasspack and one rear muffler. They are made from normal steel. (with aluminium finish or something)

What is the best deal? Take stainless or steel piping? I think stainless and paint the mufflers black.

 

honestly if the mufflers are mild steel I do not see a reason to run stainless piping.

 

Save some cash and just use all mild steel, and then just paint it good to keep the rust off.

 

i'm just starting to build anther exhaust for my s2000, my old was a 3" mild steel, mild steel everything.. never had a weld break in 2 years. new england weather too..

the pipe itself will last, but the welds are unprotected and will rust quick.. after the welds were grinding down i took some jb weld putting and went over the beads, sealed them off from weather.. worked out really well.

 

Stupid question but is mild steel heavyer than stainless?
When I make it mild steel, than I paint the hole exhaust with heat restant paint?