Originally Posted by Agent K

Ok, I've had the Z since March. It's my weekend / project car (see current mods). As a matter of fact, I loaned the car to my cuz for a few weeks shortly after I installed the FI exhaust. So, when I got the Z back, I did the Drop-in filter mod... easy-peasy. I didn't feel any noticeable difference in the butt dyno. So, during the Labor Day weekend, I did the DRL mod. I disconnected the battery to do this mod. I completed the DRL mod with no problems and re-connected the battery. [side story] I also found the source of an occasional vibration while I doing the DRL mod. I found a 3/8" x 6" extension in between the battery and fire wall. I obviously missed it when I installed the PPE LTH [end side story]. Anyway, the ecu must have learned /adjusted to the mods because the Z is pulling like a mother******!!! There used to be a noticeable 'dead spot' in HP in first gear...pre-mod. Now, it's all but gone. I'm seriously concerning the post-maf tubes as my next mod.