Hey, I have a 00 jeep grand cheeko inline 6. I have cold air intake, 40 series flows. I was thinking of buying a high flow cat. I want to know what it would do if i brought one. Would i get more power, or would my muffler sound alot better. What would they do.
I run a RandomTech h-flow cat on my '98 Wrangler 4.0. There is some increase in the feeling of power, the exhaust tone is much deeper and louder (I have the full Banks).
Mainly I like the that it is much smaller and tucks up inside the frame better for clearance. I'm not all that certain that the price/power ratio is worth the considerable cost of a new hi-flow cat like the RandomTech when the stock one is not in need of replacement. There are lower cost hi-flow cats, but again, I'm not convinced that is as cost effective as it would be on V-8 or similar motor.
But I do like it, it totally changes the sound of the exhaust and the engine does feel a bit "peppier" off the throttle, but it's not going to turn a 4.0 truck engine into a 1/4 miler...
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