07-21-2012, 12:41 AM
Join Date: Jul 2012
Location: Ocean Springs
Originally Posted by Xpress
Swapping your 10lb metal fan for an electric fan definitely will free up some horsepower. People who use the electric fans report that it really never comes on while they're driving in the city or on the highways, only at intersections where they aren't moving for a bit of time.
Do yourself a favor and do a full tuneup. You could be losing as much as 20hp by letting that engine suffer with dirty or worn out components:
-Crankcase Breather Vent (Dealer part only, not more than $10 or so)
-Plug wires (all 5)
-Injector cleaner in the tank
-Remove your throttle body and scrub it out with a good cleaner
-Replace all vacuum tubing
-Coolant drain/flush (refill with GREEN coolant)
-New radiator cap
-Transmission oil (10W-30 motor oil is perfectly fine, and acceptable by factory standards)
From there it should pretty much run like new. The 2.5L has a slightly different powerband to work with. It has plenty of torque down low for offroading, but if you want to get up and move quickly, don't be afraid to roll it up to 3500rpm. 4000rpm is about the peak of its power range, don't go too far over that. On the highway you should be running about 2850rpm at 65mph.
Thanks, its a brand new engine. I think I am just scared because the shift light comes on at real low RPMS.