So today I had myself a really 'ah ha' moment followed by a facepalm.
Recently I had a local member here 'Steven' help me out greatly and modify the y-pipe on my exhaust to see if it helps on the TRD to free things up. Since I put it on, I swear it has been more than the placebo effect and that there has been an increase in power. This I won't know until I go to the 1/4 mile this coming Wednesday the 6th, followed by a dyno run on the 9th. So that then brings me to the reason of this post.
Back in April 2010, I dyno'ed my TRD and got my stock (well the intake was stock with one part removed) figure of 196.5kW at the wheels. I was happy with this figure at the time and that was that. A couple of months later, I put in a homemade SRI (picture here) with the intention of getting some more induction sound/supercharger whine out of my TRD. Boy did that sure do it's job and to me it didn't feel like I lost power, so that was enough to keep me happy.
Anyways, a couple of months later in August 2010, I had thte opportunity to do another dyno run so I figured it would be good to see if the intake has gained me some power. Unfortunately the best run that day gave me a figure of 194.4kW at the wheels which was quite a disappointment at the time. Since I had all the extra supercharger whine though, I figured I may as well keep it at the expense of losing 2.1kW at the wheels. I was hoping it may have just been the dyno. In that case, I got the dyno graph and slipped it into the glove box and never thought anything more of it... until today.
Today while looking up ways to feed my SRI with some cooler air, since I don't really want to go down the path of a CAI just yet, I thought I may as well look at that dyno graph again.
10 months later... I finally realised that maybe I shouldn't have been completely disappointed with the figure.
Base dyno run with everything stock except for a restictive snorkel to the airbox removed:
Dyno run after putting in my homemade SRI:
I'm hoping when I dyno it again next Saturday that I get a better figure.