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Old 08-24-2018, 01:38 AM   #43 (permalink)
Master EcoModder
Join Date: Jun 2016
Location: KY
Posts: 1,346

IGL - '04 Saturn Ion
Team Saturn
90 day: 56.19 mpg (US)
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Thanked 363 Times in 268 Posts
I still don’t think it’s a fair comparison... you’re comparing an economy oriented D16 with around 106lb/ft with a performance oriented 2.3 liter Duratec with around 160lb/ft? I’m spitballing on the SVT, but you get the point...

Some automatic transmissions are programmed differently...

For example I had (two cars ago) a 2007 Chevy Malibu and my wife has a 2006 Saturn Ion, and both cars had the 2.2 Ecotec and 4T45E trans, but programmed vastly different.

The Malibu was easy to coax upahifts in and I could reliably get a shift to OD and TQ lock at 40mph, by briefly backing off the throttle, and it would hold OD with a fair amount of throttle applied to keep accelerating... my wife’s Saturn is less easy to get to upshift and it doesn’t use OD until almost 50mph, and it’s easier to make it kick down...

Once again, same engine, transmission, and final drive ratio, but different programming...
My current Ecotec project...

My last Ecotec project...
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