Quote:
quote:Originally posted by mich_132003
Quote:
quote:Originally posted by ptgtcb
The biggest flow problem with our cruisers is the CAT so that is my first priority and then MoPar tells us we need a 2.5" for stage II [:0]
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It is my understanding - I think from 3Bar - that the CAT on our GT's are free flow. If not ptgtcb, there are many free-flow CAT's on the market.
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No, no catalyst is free-flowing if it is doing its job. About 80% of total system backpressure is from the production catalyst. That's why your cat-back exhaust systems only make minor differences in power (10-15 bhp). The Mopar cat-back and most other 2.5" systems are more than sufficient to fully realize the power stated in the upgrade kits. We haven't found any delta from a well-made 2.5" to a 3", so we are selling a 2.5" system. It's lighter, so you'll be faster - right?
Race pipes are almost guaranteed to get you in trouble if you use them on the street because how loud they are - unless you are sneaky. I leave the stock muffler on even when I install the race pipe for trips down the strip and other sorts of power-rewarding activities. So there you have it, my solution to mid-14s.
I've said similar things here ->
http://www.ptcruiserlinks.com/forum/...17&whichpage=2