Hello all, I installed the ECU on 05/22 and I have filled up after going through the first tank of fuel. I will update after the second tank.
Edit 06/10: This is the hot tune.
First I will start with the bad as there is only one item to discuss. That’s the lack of an OBD flash tool to upload the tune. At this time the only option is to swap out the ECU. The swap is easy, consisting of three bolts holding in the ECU plus the wire harness connector. Now the upside. I noticed the engine and exhaust note are now deeper in sound. No louder, just more throaty. My unicorn now sounds like an angry sewing machine. With the extra power of the tune the engine stays in high gear more before needing to downshift. I had that awful TSB flash that both Raven and ExcursionDiesel complained about where the Jeep would downshift all the time on hills. That is gone with the tune. In slow speed traffic the Jeep isn’t in a race to upshift as fast as before which leads to a smoother drive creeping between close stops signs and traffic lights. The power increase is very noticeable. I tried to evaluate this whole tank of fuel for mileage but I couldn’t help myself and I’ve been getting on the throttle a bit. From a dead stop 60MPH comes up very fast. I would say the GDE claims of minus 2 seconds to 60MPH on the Ram also applies to the Jeep. I dropped the Jeep into Sport mode yesterday and from a 20 MPH roll the tires let out a little chirp when I nailed it. The Jeep is extremely fun to drive now. Overall I'm pleased with the tube for the increased mileage and power. Throw in the reduction of DPF regens, lower DEF dosing, and reduced EGR maybe the emissions will last now.
For the first tank I logged 576.8 miles and filled up with 20.72 gallons which returned 27.84 MPG. This is all city driving. I have had to change my daily drive into work due to road construction. I now drive 18 miles each way with 2 stops signs and 18 traffic lights and go through two school zones. Previously I drove 11 miles to work with 4 stop signs and 5 traffic lights and I averaged 24.5 – 25.5 MPH on those commutes. I think 28 MPH is in easy reach and maybe even 30 on my old commute resumes once Michigan’s second season (construction) ends.
Edit 06/10: This is the hot tune.
First I will start with the bad as there is only one item to discuss. That’s the lack of an OBD flash tool to upload the tune. At this time the only option is to swap out the ECU. The swap is easy, consisting of three bolts holding in the ECU plus the wire harness connector. Now the upside. I noticed the engine and exhaust note are now deeper in sound. No louder, just more throaty. My unicorn now sounds like an angry sewing machine. With the extra power of the tune the engine stays in high gear more before needing to downshift. I had that awful TSB flash that both Raven and ExcursionDiesel complained about where the Jeep would downshift all the time on hills. That is gone with the tune. In slow speed traffic the Jeep isn’t in a race to upshift as fast as before which leads to a smoother drive creeping between close stops signs and traffic lights. The power increase is very noticeable. I tried to evaluate this whole tank of fuel for mileage but I couldn’t help myself and I’ve been getting on the throttle a bit. From a dead stop 60MPH comes up very fast. I would say the GDE claims of minus 2 seconds to 60MPH on the Ram also applies to the Jeep. I dropped the Jeep into Sport mode yesterday and from a 20 MPH roll the tires let out a little chirp when I nailed it. The Jeep is extremely fun to drive now. Overall I'm pleased with the tube for the increased mileage and power. Throw in the reduction of DPF regens, lower DEF dosing, and reduced EGR maybe the emissions will last now.
For the first tank I logged 576.8 miles and filled up with 20.72 gallons which returned 27.84 MPG. This is all city driving. I have had to change my daily drive into work due to road construction. I now drive 18 miles each way with 2 stops signs and 18 traffic lights and go through two school zones. Previously I drove 11 miles to work with 4 stop signs and 5 traffic lights and I averaged 24.5 – 25.5 MPH on those commutes. I think 28 MPH is in easy reach and maybe even 30 on my old commute resumes once Michigan’s second season (construction) ends.