As mentioned, I have other mods. The exhaust dropped my low end, and I drove it for about 2k with just the exhaust. The next mod was the 'swiss cheese' airbox (actually just a ~6" hole in the bottom of the box to act as a receiver). Then, I cracked the secondaries. Before, it would almost stumble taking off from a dead stop, with the secondaries cracked, it gained all the low end that it had lost with the exhaust.
Will cracking the secondaries improve low end without other mods? Don't know, not going to experiment. Mathematics are nice and all, but only in theory. In practice they are many times proven incorrect. It was once 'mathematically proven' that you couldn't exceed 200 mph in the quarter mile...Stick with practice, leave the theories on the bench.
