x or h stocker

Ive been looking on here since the update about x or h pipe hp gain is this true or does it just add torqre or no difference from regular dual exhaust? I have dual exhaust already

 

X will add midrange tq, will quite'n it down a good bit too

 

Thanks

 

any pics of anyone's exhaust like this

 

As a loose rule.

X pipe for higher revving engines, and H pipe for lower rev engines.

X would be good for small blocks and most performance built big blocks, and the H pipe fro Nailheads of lower RPM power producing engines.

YMMV.