Value of an "X" Pipe?
 

Any thoughts on the value of installing an "X" pipe into my 68 GTO exhaust? The car is a 400 HO with Ram-Air, ported heads and Ponti-Action headers, leading into the dual exhaust.

Not real sure about hp gains. It will equalize the pressure. Eliminates the cackle sound when letting off the gas.
My .02
patrick

Hi,
I bought a 2.5" X-Pipe complete system from Pypes for my 462 cid, 68 GTO with log exhaust manifolds. I'm very happy with it so far. Car is a M20 four speed. No clearance problems, not overly loud. I had it installed by a muffler shop on an overhead lift. Quick and easy. All pipe connections were clamped.
With RA exh manifolds and HO, you will probably gain a little HP from improved flow and less backpressure.
Mike

Thanks Dog,

Does the Pypes x pipe have baffles in it?

Also, you wouldn't happen to have a spare radio connector or harness???

Hi,
I didn't see any baffles in the x-pipe tubes that I received. I ordered the standard mufflers for my system. Wasn't interested in the loud ones.
I don't have any spare cables, harnesses or connectors for radios.
Mike

X pipe
 

When we dynoed my rebuilt engine we did a pull with the Pypes 2.5" X pipe and it picked up 20 ft/lbs of torque with no other changes. So when it goes in the car, I'm using the X pipe!

they do add power to the ground but there are two negatives, one is they get in the way especially if you have a stick. two is the exhaust loses that stock low burble at idle.

No question though, good for 10-20 pound feet on the chassis dyno.

I added an "H" pipe and like the balanced sound.

i bought an h pipe and it seemed to tame mine.... maybee i shoulda tried an x pipe or left it without either

I dropped a tenth of my 1/4 times with mine.Got it from Dr. Gas

Thanks to everybody who responded. I was considering the Dr. Gas pipes.

Put an "x" in my vette to replace the factory "H" and saw a difference. Noel, Any clearance problems with the Dr. Gas "X" in your car? Is it a stick?

Red, I put a Pypes 3" with X and dumps on my "68 GTO....picked up over 2 tenths. It is very loud though. Bill

My car went from 294,1 rwhp to 322,1 and added 39 ft/lbs when I installed a 2,5" Pypes system. The car is an all stock -70 RA4 otherwise. Here is a link to Pypes page with some photos: http://www.pypesexhaust.com/gallery25.html
Håkan

Sorry I'm late getting back to you.Yes my car is a stick and no there's no clearance problems.The Glasgo brothers run them on their cars without any trouble.The quality is top shelf.

Done deal! Dr. Gas it is.