04 gtp. SD headers with dp and high flow cat to 3" custom welded cat back with new res (same length as stock), 3.4 pulley, colder plugs, 180 tstat, 3" HAI, hp tuned timing to 14 to eliminate all and any knock, richened afr slightly, raised rpm limit about 250. What kind of hp and torque gains would I see vs stock? I know all instances are different, but a range could be helpful, I want to see if I'm getting what I can out of the mods. I'm guessing 20-30 hp gain? Torque I'm not too sure. And how would this equate to 1/8 mile, 1/4 mile, and 0-100 times? I just want something to compare to before I go to the track myself. Thanks in advance for the help
