Quote:
Originally Posted by supraking74
heck ya. just the drop in air temp going into the motor alone can account for a noticeable difference, the drop in air temp is due to the fact the the pipe no longer goes over the top of the turbo and engine before entering the engine. and you will most likely get a bigger throttle body on that intake manifold, newer IC piping (if running stock IC piping and then switching to the aluminum, that alone is worth 10 - 20 hp without adj the boost) also a new intercooler because the stock one has the inlet and outlet on the same side whereas its preferred to have and normal intercooler with the inlet and outlet on opposite sides, that is more efficient as well ( the intercooler can give you another 10 - 20 hp) the stock IC piping and intercooler are so inefficient that they lose 3 psi at full boost. the stock 7mgte ran 6.8 lbs of boost and only got 3.8 lbs of boost to the motor. so to make a long story short if somehow you could only just change to the FFIM and leave everything else stock, yes you will get more hp, but due to the fact that you need a new throttle body (go big), new IC piping, and intercooler, you will notice GOOOD gains without touching the boost
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Your wrong about your pressure drop theory. Its correct that the stock i.c. does have about a 3 psi drop but it doesn't mean your getting 3.8psi at the engine, you're getting exactly what the gauge reads, gauges read off of the intake manifold pressure which is after the intercooler. If anything the turbo is building about 10 psi and losing 3 psi through the intercooler which nets you about 7 psi in the intake manifold.