exhaust question

[DenverGt2]

The other day in Mexico me and another stinger did a few rolls. I got gapped lol Is straight pipe the way to go.?

Him
Gt1
Jb4 map 1
HKSM45il plugs
injen intakes
Straight pipe

ME
Gt2
Jb4 map 2
HKSM45il plugs
BMS intakes
Muffler delete

 

[Thomby]

E30 and maps 3/4 are the way to go. Or checking your logs to make sure you're running strong as-is (crap gas + timing pull could eliminate the edge of your map 2 over his map 1). I doubt the removal of cats is what made the difference.