A couple of weeks ago I read a post from JLP about 04 Lightnings at their shop making around 415 hp on the dyno with just a pulley and chip if I remember correctly. Now my question is #1 Was that using a safe, street friendly tune? #2 Will I get similar results from my 03? THX

 

I'd give them a ring and talk about your tune. 717.786.4670

On that particular truck, with it's current mods, it was a street tune.