What kind of modifications can I make to a 2003 Jeep Grand Cherokee V8 4.7L to

[ChrisM]

gain more HP...? I've purchased a SLR performance chip, but i feel it has not done a whole lot...

 

[Justin]

You need more hit points huh? Try adding some armor.

 

[spencedog]

k and n air filter, tornado air thingy, flowmaster exhaust.

 

[PlBOY]

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