Comparison between 13B REW, 13B- RE Cosmo, and 20B UIM

Bryan@BNR · 03-04-2008, 11:59 PM

Cosmo intake manifolds are nice and the plenums are larger than the REW. The REW runners are longer. Usually, larger plenums are better for top end and longer runners are better for TQ. Being forced induction with a standard side port or street port, it won't make a hill of beans difference between the 2 b/c power tends to fall off after 7600. If you were half BP or PP then you would need the added plenum area for increased RPM capabilities.

Bryan@BNR

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03-04-2008, 11:59 PM	#19
Bryan@BNR Rotary Fanatic Join Date: Feb 2008 Posts: 302 Rep Power: 18	Cosmo intake manifolds are nice and the plenums are larger than the REW. The REW runners are longer. Usually, larger plenums are better for top end and longer runners are better for TQ. Being forced induction with a standard side port or street port, it won't make a hill of beans difference between the 2 b/c power tends to fall off after 7600. If you were half BP or PP then you would need the added plenum area for increased RPM capabilities. Bryan@BNR