Street testing my intake mod
Finally completed the second phase of my research. I borrowed some home dyno and other equipment along with some help from a friendly LS1 "club" member in my MIS class that he uses to test out his own car (and it's amazingly simple and cheap too...maybe I don't need to pay 60 bucks anymore for a dyno).
Without Inlet:
On the street the intake benefits from the freer flowing air, regardless of engine compartment temps. The intake air was measured at 78 degrees at the MAS at the coolest, and it the dyno reading it gave us was a max hp of 148 whp and 153 wtq, while still preserving the top end some of you who looked at my dynosheets saw. Our measured 0-60 time was 8.1 seconds, and the quartermile (I think estimated by the computer from my wheel rotation) was quoted to us as 16.2 @ 89 mph.
With Inlet:
We pushed the duct back on to do the second portion of the test. The intake air was measured at 77 degrees at the MAS (not much difference surprisingly) at the coolest temp, the dyno was 141 whp and 156 wtq max values, but the high end of the power curve still dropped sharply when we plotted it. I think it's fair to say it's the major restriction once you get in the higher RPM ranges. Our measured 0-60 time was still 8.1 seconds though, and the quartermile was estimated at 16.4 @ 87 mph.
Without Inlet vs Other Cars:
You already have the values for my car, so it's fairly logical to say that my car vs itself the run without inlet would probably win. So, we pitted my car against my neighbor's LS V6 first. I raced him twice driving my car, both times winning, then raced him two more times in his car, both times losing. I'm not sure how far we pushed it, but in the end my car usually had about half a car to a full car length. The last car I ran against was a Fed spec GTZ courtesy of a helpful owner that was going in for an oil change anyway so he ran against me before he went in. Despite the GTZ's heavier weight my car still lost by a good 1 and a half car distance the first time, and 2 car lengths the second time :cry: Bummer. At least I can tie a new BMW 325i autotranny.
