Quote:
Originally Posted by ganz954
My goal is to create a rom that will give 10%-15% mileage increase.
Im not looking for performance here I just want to see if it is possible to achieve that. Dont care if the car is slow as a Prius.
Anyone have a clue how to achieve better gas mileage?
What tables should I start looking into?
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By experimenting through trial and error, I've found some differences between stage 2 OFT tunes. My A/R header is only slightly unequal in length, see pic, and so I've tried tunes for both EL, and UEL headers. There are significant differences between UEL and EL header tunes. I'll show you 2 of them, see pics below. My average MPG with the version 2.062 stage 2 91 Octane EL OFT tune was only 28, yet my average for the version 2.062 stage 2 91 Octane UEL OFT tune is 30, and the pics show the reason why. the exhaust isn't opened as far, or as early with the UEL tune versus the EL tune. I've found that the EL tune is quick, but wasteful, while the UEL tune is slower, but more torquey in the low revs, and more fuel-efficient. I think the VVT, (AVCS), is where to start experimenting for better mileage, also delay the ramp up in the drive-by-wire tables to keep your foot from wasting as much fuel.
I removed the proprietary pictures of the VVT tables, but you can check them yourself by opening them in RomRaider.