Originally Posted by screaminjoe
Well, in my opinion 1/4 mph gains do not lie and are the best proof for what power gain you are really getting. Dynos can be set to say whatever the owner wants them to. Today's ECUs have plenty of technology and sophistication to adapt to the increase flow of air, usually up to 80 hp on V6s, so yes you can fine tune the power output with an ECU upgrade, but are you going to feel or see 10 to 12 hp ? I never have... And I surely wouldn't risk it for $900 or more dollars. Can't hurt to try it without it and then add it after. I have proven by mph numbers, the best bang for the buck, is the pulley and larger intake y-pipe. The pulley will give about 40 hp and the y-pipe will give about 10 and comes with high-flow air filters from Evosport. I would rather spend the $175 on the larger y-pipe to get 10 hp than $900 or more for the ECUs 10 hp. Then focus on making the supercharger's potential hidden power come out by increasing the heat transfer of the supercharger cooler and intake temps, so the ECU won't take away power when it retards the timing. See the thread on intercooler maximizing, where I explain my cheap but effective way of doing this.
This "Y - pipe" you are talking about, I went to the Evosport site and couldn't find it. Do you have any pictures or a link to a pictures? When I bought this SRT6 and brought it home, I got under the hood to look around just to see if I could figure out how everything works. After studying how does the air is delivered into the engine from the supercharger, I was looking at what I think you are calling a Y -pipe on the back of the engine and thought as small as it was it seamed to me that it would cause some restriction.