Quote:
Originally Posted by Apex Chase
Very little, the cats on the Camaro are almost like straight pipe. Dyno tests run before and after cat removal have shown basically no gain whatsoever.
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Are you sure???? I would like to see a thread on that and it would have to come from a reputable place like Janetty or ADM for me to believe.
I think in the past Janetty did a test where he ran a set of LTs with and without HF cats that didn't show much of a difference. That however is different than testing the factory cats against aftermarket HF cats.
On the flip side ADM claims to gain 18 rwhp from the removal of the cats by using their offroad mid-pipes. SOLO as well is showing similar gains by using their HF cats over the factory cats.
I'm not trying to throw you under the bus or call you a liar or anything but I haven't seen any tests showing that replacing the factory cats with HF cats don't show any increase.
However, I would like to see dynos from independant people to see if HF cats or no cats are actually making the numbers claimed by the Mfg.