^^^ Yep, stock S13 setup is NOT bad.
Maybe a 1-2rwhp gain going with a HotShot over stock...not really worth it for the $$$.
Now, on an S14...5-6rwhp at least is expected...the cat is VERY restrictive, and you can still use one under the car to keep it smog friendly (stock, there is an empty shell there as a resonator...looks like a real cat, though).
- Brian
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