Should you buy an aftermarket intake manifold for your 2jz? Here is a comparison of the OEM GTE intake manifold versus a Sleeper Designs RMR style intake manifold. 3 different boost levels were tested. Wastegate boost with boost controller turned off, 26psi and 32psi. Both dyno sessions had similar air temps of 75-80F and 83-85% ethanol in the tank. This is on 100% stock engine with the only modification being Kelford D cams, and valve springs.
