00 GTS deleting muffler and or cats worth the time

[BlackACR]

I have a 00 ACR with the Mopar computer and, rear muffler delete the car did 415rwp 459rwt. Would cutting the door mufflers help or hurt on power, or should I cut the cats as well? The Mopar computer should help on the check engine light. Would like some feedback from people who have been there done that.

 

[Joel]

Like the colour Tony, skunks are the best!

Replace the cats with hi-flo ...avoid the smell, replace the system with borla or belanger...get great sound. Std cat does a lot of silencing, in sill silencers look very restrictive, check inside them.

 

[Steve 00RT/10]

Tony, Most, or at least many, running the Mopar computer end up with their A/F ratio way too rich. I have had mine dynoed with and with out the computer. The computer does get rid of the check engine light, but it cost me 15 HP if I remember right.
I have never had trouble with smell from running catless. Belangers work real well for me.

Steve

 

[JonB]

The year matters....your softer cam is less agreeable to exhaust-delete mods. Losing rear muffler and under-door resonators will increase HP on a 2000 and not affect TQ. But sound ratty.

Lose the cats ALSO, and lose TQ, sound RATTY-ER, stink, and risk idle-surge. [And check-lites except for your (worthless) ECU.]


Nothing sounds / performs as good as a tuned hiperf exhaust system. Tons of dyno data to back it up.

Good HF cats will protect your TQ, your sills, and your nose.


Commercial: Cat backs NEW from $1095....Used-a-bit from $850

 

[BlackACR]

So, John I respect your judgement greatly. Should I install the stock pcm, install high flow cats and, cut the side sill res. for the best results. Or what would you recommend??