07 Aveo hatchback Ls custom exhaust pipe size?

[Justanotheraveo]

What works best for everyone? Just going for minor sound but more flow . Will have ecu re flashed to correct for mods

[rhyder7]

With a 2inch pipe size, you will gain some hp.

[Justanotheraveo]

Exactly what Flowmaster just finish telling me and 50 series deltaflow for minimal sound makes good upgrade

[northguest47]

I've been running the 40 series deltaflow and have loved it.. great sound and not too much louder than stock.. I've called it a great adult sound. Actually going to redo the whole exhaust this year and will likely go with another delta 40, but will also look into the 50. When I was researching this a few years ago I remember forum members saying to go 2" if its all mandrel bends, but 2 1/4" if you cannot afford a shop with a mandrel bender. Logic dictates one would get more laminar flow with mandrel bends - what I am going to do for sure this time.