Only resonator - Straight pipe. Choose H location guys

[Modernmusclecar]

You gain nothing from an H pipe but a deeper tone. Cut out the large l99 resonator and put the h pipe anywhere in the middle.

[Modernmusclecar]

Originally Posted by NEstyle

How did you determine that's the optimal position? Did you try multiple locations and dyno test each one and optimize the tune for each position?

There is zero gain from an x pipe or h pipe. Most high end catacks come with x pipes. Close to the front for better scavenging.People are really over thinking this.

[ReVeNanTSS]

Originally Posted by Modernmusclecar

You gain nothing from an H pipe but a deeper tone. Cut out the large l99 resonator and put the h pipe anywhere in the middle.

I don't need any gains. I just want old muscle sound and scavenging for not lose lower torque

[ReVeNanTSS]

Originally Posted by 1JEWLDSSRS

Trans tunnel cross brace is where you want to install the h-pipe. Black cross bar in this pic.

Attachment 1042663

It is in the middle of oe resonator. I will put H pipe connection there

[1JEWLDSSRS]

Originally Posted by ReVeNanTSS

It is in the middle of oe resonator. I will put H pipe connection there

That's the best spot for it. Like stated, if you look at all the aftermarket cat backs, that is where the X is, and also where the H should be as well. Good luck, hope you find the sound you want with the stock cans... Has your AFM/DOD been deleted in a tune? If not it is going to sound pretty crappy to you with a louder sound when it activates.

[Modernmusclecar]

Originally Posted by ReVeNanTSS

I don't need any gains. I just want old muscle sound and scavenging for not lose lower torque

The h pipe is perfect. I find the X pipe cleans up the sound better tho.

[ReVeNanTSS]

Originally Posted by 1JEWLDSSRS

That's the best spot for it. Like stated, if you look at all the aftermarket cat backs, that is where the X is, and also where the H should be as well. Good luck, hope you find the sound you want with the stock cans... Has your AFM/DOD been deleted in a tune? If not it is going to sound pretty crappy to you with a louder sound when it activates.

I hope i will get sound what I needed) yes afm fisabled by diablosport i3. No more craspy activation sound)

[ReVeNanTSS]

Originally Posted by Modernmusclecar

The h pipe is perfect. I find the X pipe cleans up the sound better tho.

H pipe is all we need about sound)

[ReVeNanTSS]

This forum is better than other car's forum. I will make H pipe soon. Thank you guys! Love ma chevy)

[WHAMMO]

Stock NPP seems optimal gor performance and sound for an H. I have a X now (because full 3") and its different; its less muscle but more high pitch. You just want to let it rev with a X. With an H I feel its a bit louder. I had both with NPP mufflers.

[ReVeNanTSS]

I put H pipe sound back to stock) little bit louder from stock. On straight pipe it was more agressive

[1JEWLDSSRS]

Originally Posted by ReVeNanTSS

I put H pipe sound back to stock) little bit louder from stock. On straight pipe it was more agressive

Very nice sir !!