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Marty · 09-25-2009, 02:10 PM

It seems like these performance mods all claim improved fuel economy. I have a 1999 Toyota 4runner, 4cyl 2.7L engine and am wondering - for someone who drives economically - whether I'd see much improvement. It seems that the cold air intake, and exhaust system, would help in the higher RPM range, but might cause lessening in the low end. The headers seem like they could help the low end. Maybe they all work (ideally) in concert with each other? If so, that is about $1000 bucks worth of modding. Any opinions???

The truck is pretty well stripped down (running boards, passenger mirror, roof rack, back seats, bug deflector, rear spoiler - all gone); running Amsoil 0W-30, Amsoil air filter, and oil filter; just installed ScanGauge II. That is all so far, but I feel there is more that could be done and I like to keep the project going.

This is a very inspiring site, and I'd much appreciate any thoughts or feedback.

Cheers,

Marty

09-25-2009, 02:10 PM	#1 (permalink)
Marty EcoModding Lurker Join Date: Sep 2009 Location: WA Posts: 4 Thanks: 0 Thanked 0 Times in 0 Posts	Cold Air Intake, Headers, and Exhaust It seems like these performance mods all claim improved fuel economy. I have a 1999 Toyota 4runner, 4cyl 2.7L engine and am wondering - for someone who drives economically - whether I'd see much improvement. It seems that the cold air intake, and exhaust system, would help in the higher RPM range, but might cause lessening in the low end. The headers seem like they could help the low end. Maybe they all work (ideally) in concert with each other? If so, that is about $1000 bucks worth of modding. Any opinions??? The truck is pretty well stripped down (running boards, passenger mirror, roof rack, back seats, bug deflector, rear spoiler - all gone); running Amsoil 0W-30, Amsoil air filter, and oil filter; just installed ScanGauge II. That is all so far, but I feel there is more that could be done and I like to keep the project going. This is a very inspiring site, and I'd much appreciate any thoughts or feedback. Cheers, Marty