Exhaust X pipe holding power of car back?

[1993SSP]

I bought an off road x pipe from ebay, it wasnt a brand name and had the O2 sensor provisions. But since I intstalled this pipe it seems like it's holding my car back or something, not the power i had before when the car had an H pipe on it, is this possible?? Car just doesnt seem right power wise, thought i'd see if anyone had any suggestions

 

[PNY PWR]

What, if any, modifictions to your motor? May have decreased backpressure therefore decreasing power. What kind of mufflers/headers do you have on?

 

[1993SSP]

Thumper combo with E cam, BBK shorty headers, the x pipe with bassani cat back system

 

[PNY PWR]

It very well may be just the difference it made in the exhaust note, a mental thing. It's happened to lots of folks. I seriously doubt it would have changed anything. I personally will stick w/ a good old fashioned H-pipe. Also I can't see where one H or X pipe, cheap compared to expensive and of equal size, would be different from a performance aspect. They're both pipes connected together, just one might last longer than the other.

Did you go from cats to offroad?

 

[1993SSP]

Yes, it's an off road pipe, i dont think it's the noise aspect, i did this pipe when i did my motor swap, i dunno, maybe just not gonna get the seat of the pants kick i expected from my swap, but i swear its like the noise is there the power isnt .........

 

[PNY PWR]

Yeah, that'd be hard to tell since you did a motor swap at the same time.

 

[1993SSP]

No possible way the old engine was making more power tho, it was leaking water and had 150K on it, this is a complete fresh bottom end with 75K on it, gone completely thru and had the thumper combo put on it with Tmoss lower, the X pipe has to be part of the culprit! I wish i had kept my Mac prochamber H pipe so i could swap and see

 

[yooknohu]

I had the same problem but mostly a loss of low end and a bit of pickup up top.