x pipe

nmcgrawj said:

Where are you getting these numbers from? Arent bassani pipes upper $200's/just under $300??? But a dr. gas pipe is overpriced at low $200's? What is the HP difference and who did the testing?


The prochamber has been known to make the "most"...but 8rwhp? On top of what you are already gaining by going from cats to offroad?


Its funny though, cause George Klass from accufab who designs headers said the exact opposite. X-pipes are not the best.


To me, if you are talking about pipes with no cats....its like comparing the flow of mufflers on a n/a car....the difference is negligible. Choose based on the sound you want....i have heard back a few years that bbk x-pipes sound horrible. Maybe they changed their design?

Click to expand...

This comes up all the time, so the info stays pretty fresh in my memory. The last dyno test I saw was in 5.0 magazine, where the lined up about 9 intermediaries on the same mustang in one day. It was a fox body 5.0 with heads and cam, producing about 280ish hp to the wheels. The article is at least 5 years old, but most of the intermediary manufacturers have not adjusted their designs much since then anyway. I thought this to be the most pertinent article I have read on the subject, because it was done on the same car, testing only the intermediary itself, and on a car with the most common mods done to 5.0 engines. I think that if you are comparing intermediaries, it doesn't get more scientific than that. I have read a few articles on the subject, but this is the only one that tested all the major manufacturers, and many of the other articles written also tested with different headers and such creating more variables. Anyway, Dr. Gas was the first to introduce the X-pipe in large scale, and kind of got a reputation for it. I was very surprised to see that it landed dead last on the dyno test. I think the main factor in this, is that the Dr. Gas comes in pieces that can be adjusted to fit different exhaust systems. Making all the parts adjustable causes the X to fall in a less optimal location. I was absolutely amazed how far out ahead the ProChamber came. It staggered me. But there is no denying it, when you test it on the same car on the same day. The dyno doesn't lie.

Kurt