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Suggested MPG differences between Eco and Hot tunes....  RSS feed
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CRD Joe
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Joined: 18/07/2009 21:11:02
Messages: 49
Location: Seattle, Washington
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Hello, I have a CRD with a Suncoast and Transco installed. At the moment Im running an Inmotion stage two flash. Im wondering the relative fuel mileage differences between getting an Eco and Hot tune. I typically drive for mileage. Always taking time to get up to highway speed allowing the trans to shift into 5th and then settling back down to between 55 and 60 MPH to keep RPM's low.

Im going to get in on the new "Group buy" at LOST and I just want to know everything I can about both offerings.

Thanks,


Tom

PS, dont get me wrong, I LOVE the power Im getting now as well. I just think your flash will be much more comprehensive in maximizing this power plant.

'05 CRD
Suncoast, Transco, Inmotion, Provent, ORM Snorkle, HID's, 2.5" Cat back no muffler, V6 Airbox, Fumoto, Cat 2 filter
GreenDieselEngineering
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Joined: 10/07/2009 07:25:47
Messages: 353
Location: Southeast Michigan
Tom,

Do you ever experience the "shudder" with the Inmotion and Suncoast converter? The ECO tune returns slightly higher fuel economy gains than the HOT tune, mainly due to the temptation to push the throttle more with the HOT tune. You could also opt for a "full torque" ECO tune, which allows full torque when the transmission is in lock-up (good for towing with an upgraded TC). This option is the best of both worlds. Another consideration for some is the ECO tune has virtually no smoke, whereas the HOT tune will smoke a bit at full throttle.

Incidentally, the turbo kit is the most fuel efficient product we have. When driven conservatively it will have about 2-3% higher fuel economy than the ECO tune. This is due to the higher efficiency of the new turbo and lower intertia of the rotating assembly. When flogged, it can keep up with a V-8 Explorer and still return almost twice the fuel economy.

GDE
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CRD Joe
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Joined: 18/07/2009 21:11:02
Messages: 49
Location: Seattle, Washington
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As to the shudder issue, Im not sure. I think once or twice Ive noticed it. Mostly I think its because I drive in 5th at as low an RPM as I can (1730 or so) and then if I have to suddenly speed up I think Ive experienced it once or twice for a split second at a time during the initial acceleration. Does that sound right or not?

'05 CRD
Suncoast, Transco, Inmotion, Provent, ORM Snorkle, HID's, 2.5" Cat back no muffler, V6 Airbox, Fumoto, Cat 2 filter
 
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