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#1 |
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2ZR swap. DO IT! Ask how!
Drives: 09 Meteoric Metallic HB Join Date: Feb 2011
Location: West Michigan
Posts: 2,333
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The other thing to keep in mind is that the ratio REALLY kills your acceleration in 5th gear and has little to no improvement on fuel economy. Since it's an overdrive gear, you give up torque to get rpms. At freeway speeds, the air resistance becomes a major factor.
I've got close to 150 hp at the crank, and matting the pedal in 5th gear doesn't do anything other than drink gasoline. It's nice to have lower rpms for engine/exhaust noise, but I don't see an increase in fuel economy. If anything it's a wash compared to 4th gear. |
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#2 | |
![]() ![]() Drives: 2009 Yaris 3dr Join Date: May 2009
Location: California
Posts: 135
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Quote:
Since I've decided against turbo or supercharging for the time being, I'll likely try Jet performance ECU upgrade tuning on my spare ECU which I just got it back from CTScott a couple of days ago. I've already seem great MPG improvement by getting both The TRD CAI and TRD sports exhaust installed on my original engine with 109K miles. It's never gotten below 40 MPG, but was starting to drop a bit once I past 100K on the odometer. Completing the build is a new factory exhaust manifold that's been high temp powder coated with a new K&N O2 front sensor. Thanks for the tip on gear reinstallation. Maybe the crew down at my local Meineke will let me use their HF press to push them back on the shafts. |
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