Late Model Jeep Performance Enhancing, Diesel & Hemi V8
The modern Jeep has come a long way since the days of Carby’s, Extractors & Cam's sought after as performance upgrades or ‘mods’. These days we are faced with an ever increasing digital world and nearly all of the current Jeeps available run off a ‘fly by wire’ or cable less throttle system. In other words everything is controlled by an ECU using silicon chips.
‘Power Chips’ come in all different guises and are one of the most common upgrades available for petrol and diesel Jeeps. They alter signals received by the vehicle’s ECU and usually ‘Force’ more fuel or timing into a vehicles ignition cycle be it petrol or diesel. Whilst it is a pretty proven method of gain, the gains aren’t exactly awe inspiring. These units are pure ‘trickery’ and for the price most of them charge they should be ashamed.....but they’re not because they’re taking you’re hard earned and not looking back.
To get the most out of ANY engine be it petrol, diesel, LPG or even hydrogen, you need to be able to remap the ECU’s program to a specific level of input. Fuel delivery, pump pressure, primary and secondary injector cycles’, spark delivery (for petrol engines) and timing are the quintessential parameters that need to be monitored, adjusted and proven in the real world to make safe reliable engine Torque.
To me, Horse Power and Kilowatts are nothing for an off road mainstream daily driven 4WD. TORQUE is what we should all be chasing. TORQUE is what gains you Mpg, acceleration, increased anti stall characteristics whilst off roading and manoeuvring, usually whilst using lower rpm’s too. Horsepower merely gets you Mph and something to talk about! Unless we’re talking drag cars to be honest Hp is something that we should just about all be forgetting. The higher the Hp the more unreliable and uncontrollable the car is, the more rpm’s it will use along with fuel, do you really want that thought lingering over whilst off the beaten track?
To get the most out of ANY engine be it petrol, diesel, LPG or even hydrogen, you need to be able to remap the ECU’s program to a specific level of input. Fuel delivery, pump pressure, primary and secondary injector cycles’, spark delivery (for petrol engines) and timing are the quintessential parameters that need to be monitored, adjusted and proven in the real world to make safe reliable engine Torque.
To me, Horse Power and Kilowatts are nothing for an off road mainstream daily driven 4WD. TORQUE is what we should all be chasing. TORQUE is what gains you Mpg, acceleration, increased anti stall characteristics whilst off roading and manoeuvring, usually whilst using lower rpm’s too. Horsepower merely gets you Mph and something to talk about! Unless we’re talking drag cars to be honest Hp is something that we should just about all be forgetting. The higher the Hp the more unreliable and uncontrollable the car is, the more rpm’s it will use along with fuel, do you really want that thought lingering over whilst off the beaten track?
Murchison Products are the sole Australian Distributors for a proven US company called Green Diesel Engineering.
We currently offer tunes for the KJ, KK, JK ,WH and Commander CRD's. Tunes are $950 plus postage which is brilliant value compared to what else there is on the market. These tunes alter boost, timing, fuel delivery and rpms all within very safe limits. To make our product not only competitive but cost effective, we offer an ECO and HOT TUNE so you can swap between them at will.
Upgrading the vehicles ECU or ‘PCM’ in Jeep speak is performed via a flash program which is uploaded through the vehicles OBDII Diagnostics Port. The vehicles’ standard engine management program is saved before the performance flash takes place. This way you can upload the stock programming if you wanted to take the vehicle in for a service or warranty work, but regardless of this, the upgrading of the ECU is undetectable via any diagnostics tool available as it is simply a matter of re-writing the factory program. Although this is possible, I’ve still never heard of anyone bothering to do it before a service!! The only way you can detect that something has been ‘tweaked’ is by sitting in the driver’s seat and flooring it !!!
Stay tuned for some CRDSTU Dyno Video’s in the near future!
Upgrading the vehicles ECU or ‘PCM’ in Jeep speak is performed via a flash program which is uploaded through the vehicles OBDII Diagnostics Port. The vehicles’ standard engine management program is saved before the performance flash takes place. This way you can upload the stock programming if you wanted to take the vehicle in for a service or warranty work, but regardless of this, the upgrading of the ECU is undetectable via any diagnostics tool available as it is simply a matter of re-writing the factory program. Although this is possible, I’ve still never heard of anyone bothering to do it before a service!! The only way you can detect that something has been ‘tweaked’ is by sitting in the driver’s seat and flooring it !!!
Stay tuned for some CRDSTU Dyno Video’s in the near future!
*****NEW UPDATE*****
We are currently dyno tuning, road testing and 1/4 mile testing the 3.0lt CRD WH Grand Cherokee Tune to give you, the customer as much physical evidence as practically possible to help you understand and make up your own mind about our tuning products. The results so far have been mind blowing and I'm absolutley wrapped with the way it is performing. We have also just designed and fabricated our very own Intercooler for the WH CRD which will give the vehicle even more push in the back. After installation of this we'll also be doing our very own 3" stainless hand tigged high flow exhaust to complete the system and hopfully get us down into the 14sec time bracket. The "CRDSTU 650" Tune will be something very special indeed.
We'll be showcasing the vehicle at this years Mopar Sunday at Willowbank and of course beating it down the strip for all to see!
Quick Facts for 3.0lt WH CRDSTU / GDE ECO Tune so far:
- Fuel economy has improved by approx 1-1.2ltr per 100klm BETTER
- Torque has increased to around 595Nm
- Vehicle changes gears less during normal driving due to there being more Torque at all available RPMs (main reason for fuel gains as it rev's less)
- Overtaking speeds are nothing short of astonishing
- With traction control turned off is spins the tyres hard on a WOT take off (and we're running 265's on our test vehicle!!)
For the 5.7 Hemi Owners, we also do cold air induction systems and stainless bolt on Dynomax Exhaust Systems. As much as we love our CRD's, you cant beat the sound of a tuned and mildly exhausted Hemi thundering down the road.
