Headers for a 2000 2.7 4wd?

thenrie · 09-10-2007, 11:08 AM

Anybody tried headers for a 2.7? Will it increase highway gas mileage while still running through a cat and decent muffler? I'm checking out all possibilities for some mpg here.

thenrie · 09-11-2007, 04:33 AM

I took a good look at the engine yesterday and found that the 2.7 already has a steel-tube header with a 2-into-1 collector. Anybody know if that is stock? I've never seen a production exhaust header that wasn't cast iron. Previous owner says he didn't change anything, so if it is after-market it was done fairly early in the pickup's life.

09-10-2007, 11:08 AM	#1
thenrie Senior Member Joined: Sep 2007, #2582 Location: Pittsburgh, PA Posts: 124 2000 Tacoma, SR5, TRD, 2.7L (LEV), 4wd, 5sp man, 120K miles, 4.30 gears, 31X10.50X15 tires. 2000 Access Cab Manual 2.7L LEV Magnaflow exhaust, AFE Stage 2 cold-air intake system.	Headers for a 2000 2.7 4wd? Anybody tried headers for a 2.7? Will it increase highway gas mileage while still running through a cat and decent muffler? I'm checking out all possibilities for some mpg here. __________________ Tony Pittsburgh

09-11-2007, 04:33 AM	#2
thenrie Senior Member Joined: Sep 2007, #2582 Location: Pittsburgh, PA Posts: 124 2000 Tacoma, SR5, TRD, 2.7L (LEV), 4wd, 5sp man, 120K miles, 4.30 gears, 31X10.50X15 tires. 2000 Access Cab Manual 2.7L LEV Magnaflow exhaust, AFE Stage 2 cold-air intake system.	I took a good look at the engine yesterday and found that the 2.7 already has a steel-tube header with a 2-into-1 collector. Anybody know if that is stock? I've never seen a production exhaust header that wasn't cast iron. Previous owner says he didn't change anything, so if it is after-market it was done fairly early in the pickup's life. __________________ Tony Pittsburgh

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