Quote:
Originally Posted by btwilson86
I've driven one Supra (GE) with a hollowed out cat, and then the same car after a used cat was installed... Although there *may* have been more power with the hollowed out cat (nothing that we noticed), the car ran better with the cat in place. The power built up much smoother than without the cat, and it helped the car have more pull in the higher rpm's (with the hollowed cat, it would fall on it's face around 5500ish RPM).
So I say keep the cat.
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With this being said.. High flow cat would be better than stock right? I would still get a similar build up with out the "falling on the face around 5500ish RPM".. Yes, no?
