Custom y pipe, no cats = hp gain of??

[In_style]

I just went in and had a new y pipe made and cats cut out. Car sounds better, more power, but how much roughly did i gain??

[Killer_bluebird]

Probably about 10-12hp to the wheels. I gained 16.4 rwhp and 13.4 rwtq with a Bassani ORY and a Borlamouth (XR-1 Race muffler) over my stock set up.

[nhraformula]

I just went in and had a new y pipe made and cats cut out. Car sounds better, more power, but how much roughly did i gain??
stock cats flow rather well. im guessing you gained no more than sigle digits.