HP incresses are little with exhaust on the 4.7. your looking at 4 or 5 RWHP and the headers are only putting out 7 or 8 RWHP. Everyone that I have talked to said that the 4.7 flows so well its hard to get HP out of the Exaust. Mopar PCMs are not out yet for the 4.7. I have the Jet chip and the longer its on the truck the less I feel it effects it. If I take it off it does'nt feel different. The Intense performance Z-tube is a great intake I have one and love it. It sounds real mean too. MSD will release its performance ignition in mid-summer PN 7020. If you want to get rid of the 100 mph limmiter get a Mike Leach custom flash talk to Matt Barret about that one. I run the autolites in mine and have no complants (3923s) also a 180 t-stat will help and change over to Mobil-1. Underdrive pulleys will be out in a month or so too and there is work going on for new cams.
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Chris Lambert
Lowered 00 CC Sport + 4.7 V-8 5 speed 3.55 LSD Z-tube intake, Mobil 1, 180 T-stat, Jet Stage II, PowerSlot Rotors with Raybestos Racing pads, Flowmaster catback duel tips, Tint, 275/60/15 X4, Street Scene painted Mirrors, Clear Front Lenses, chrome grille and bumpers
1/4 mile 14.98@89.65
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