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What does GDE do for the Grand Cherokee?  RSS feed
Forum Index » Grand Cherokee Tune
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GreenDieselEngineering
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Joined: 10/07/2009 07:25:47
Messages: 350
Location: Southeast Michigan
Our newest tune offering focuses on improving the Grand Cherokee CRD fuel economy and part/full throttle performance.

The average fuel economy gain is roughly 3-5mpg depending on driving style and average speed. This is accomplished by optimizing the fuel combustion through changes in injection timing, fuel pressure, boost pressure, pilot injection events. EGR issues are eliminated and the smoke emissions are reduced substantially. For vehicles equipped with a DPF (particulate filter), the regeneration frequency is less and backpressure tends to be lower further improving the fuel economy. In normal driving the exhaust temps are 50-100 F lower than stock to improve engine and turbo life.

Off the line performance is improved through improved combustion and an optimized turbo vane position. The 0-60 mph results show the GDE tune to be about 1 second faster than stock. This equates to about a 40hp gain at 4000rpm. Torque is increased from 1800-4000rpm linearly by about 40 ft*lb.

This tune can cause sensory overload when the go pedal is hammered! The fuel economy improvement is icing on the cake, especially considering the high price of diesel fuel.
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Just bought one for our GC. Installing it on Monday 08/29/2011. Can't wait to see how it is !!!!
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Can you provide actual HP and torque improvement figures for your tune??
zlartibartfast

Joined: 04/09/2014 14:25:24
Messages: 2
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Anonymous wrote:Can you provide actual HP and torque improvement figures for your tune??


http://www.keepandshare.com/doc/3152089/gde-power-torque-wk-crd-data-pdf-september-20-2011-2-41-pm-6k?da=y
zlartibartfast

Joined: 04/09/2014 14:25:24
Messages: 2
Offline
GreenDieselEngineering wrote:
This tune can cause sensory overload when the go pedal is hammered! The fuel economy improvement is icing on the cake, especially considering the high price of diesel fuel.


After installing the Hot Tune, I realized the need to upgrade my (pretty much worn out) suspension. 4 Bilstein shocks and a heavier rear sway bar took care of the pitiful understeer, and new rims with 1.5" backspace gave me a wider stance. Upgraded brake rotors and pads improved my topping ability. Now I am comfortable using the extra power!

In real world driving, I am averaging 25 MPG (US). Before the tune, my average was 22
 
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