Which is better, X pipe or H pipe?

[Doug213xrj]

If it was me I would go with the X pipe. whether it makes power or not (I think it does) it definitely wont hurt power.

 

[403Olds]

NASCAR runs an X pipe, they wouldn’t do it, if it wasn’t better.

 

[lilbowtie]

If I were to do it again I wouldn't use either, and I plan on going back.

 

[melloelky]

PITA

 

[pagrunt]

This thread is making me think about the Summit or Jeg's stainless kit to replace the POS Pypes kit. Sad thing is the X-pipe is one of the better bent parts of the kit.

 

[pontiacgp]

NASCAR runs an X pipe, they wouldn’t do it, if it wasn’t better.

in our sportsman circle track series we could run any configuration of exhaust, we extensively test the X, H and straight through. There was no difference whatsoever with the lap times

 

[-83MONTESS-]

Engine Masters proved that with the only variable in the entire setup being the X/H/straight pipes, the X made more power. Probably not enough to feel but power is power.

 

[Onehit]

As I have a Pypes x pipe 2.5 exhaust on my 84 231 v6, I will say go with the H if it's going to lower the tone. The kit I got came with the the Street pros I think and it was way too high pitch and raspy. I eventually replaced the mufflers with a set of dynamax turbo mufflers. I still wish it was a little lower in tone.

 

[79Lemans]

As I have a Pypes x pipe 2.5 exhaust on my 84 231 v6, I will say go with the H if it's going to lower the tone. The kit I got came with the the Street pros I think and it was way too high pitch and raspy. I eventually replaced the mufflers with a set of dynamax turbo mufflers. I still wish it was a little lower in tone.

How does that sounds??? I watched a video online of an Pontiac LJ with the 231 V6 and man that sounded good!

 

[Techman]

FWIW my Howard’s Solid lifter cam instructions stated an exhaust without either will provide the best sounding rough idle.