[Gen5&Beyond]

I did this same thing and got beat up by everyone saying it won't help anything and you wasted your money. There are test out there that show no gains on a stock motor. Holly sells a kit to do what you and I have done stating some gains. I've not seen any test with modded engines to say if it helps or not. In my case I didn't like the noise it made when the valves were opening. It almost seemed like they were waiting on pressure to build before opening then they would open. It didn't sound right so I had them removed. It didn't cost much and I have hptuners so I had the available credit to tune it out in the FSCM. Perhaps we'll never build enough exhaust pressure to make a difference but if you flow tested the bent pipe and a smooth pipe with no bends there's no way the bent pipe can flow as well as the smooth one.