Don't sweat it! I agree that it's not factory correct, but it doesn't seem to hurt a thing! Some will argue that it affects exhaust scavenging (both pro and con) but I have never found any evidence that it makes one iota's difference (the pipes are just too short and fat to matter, I think).
I agree with Gary. Somewhere along the line the mufflers or pipes were likely replaced with PMA'd parts rather than Ce$$na originals. I suspect that the PMA'd parts can have the alignment features missing, or installed 180? out from the original design. Unless both mufflers and pipes were replaced at the same time (and from the same supplier) it's possible that any alignment features would have to be overcome in order to install the pipes correctly like they came from the factory (slant facing forward).
The possible alignment problem would have had to have been missed during PMA certification, but I think that is possible, too!
Old thread on pipe orientation. [
cessna150-152.com]
Correct pipe orientation!
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