Joined
·
36 Posts
I took my car in to update the dim instrument cluster and a couple minor things, and my service manager tells me there is a new update (13417...Engine Protection Mode Activated During Aggressive Drive), which involved "reprogram ECM and IPC). I did not think much of this since I don't track my car or anything. The car took overnight to finish, which was a lot longer than I or the the service manager expected.
Anyway, I took my car back, hoping my instrument cluster would not be crazy dim anymore. I got much more than I ever expected.
First, the dim cluster is gone! The navigation still flickers intermittently, but my manager said that there is an anticipated fix for this soon.
So I'm driving out of the parking lot, and I noticed a subtle but very noticeable increase in performance in the car. I thought maybe I'm imagining, but after 2 days of driving more than 100 miles, I can confidently say the following:
1. The torque has improved substantially between 1200 - 2000 rpm. I was on the verge of pulling the trigger on the Pfadt engine tune because of my disappointment with low end torque. Maybe I'm used to my viper SRT (which I sold in 2011), because I truly felt that anything under 2000 rpm in the C7 was unusable. NOW, I can't say that anymore. I can be lugging along at 70mph in 7th, and the RPM is barely 1200, and I can definitely feel a tug when I push in some gas. Before the update, no can do. So, did this update really improved the low end torque on my car? I can now say that THIS IS WHAT IT's SUPPOSED TO BE!!!! I can now confidently say that this car has very usable power between 1500 and 2000rpm. I know you guys might be asking who cares how it is at this low rpm. Well, we all know that it's a great car above 3500rpm. But now, I am not just happy above 3500 rpm, but I'm super happy below 2500rpm, which is where most of my driving is. This is my DD, and I've driven almost 2500 freeway miles in less than 8 weeks of ownership.
2. NPP exhaust is louder. REALLY!!!! Before the update, anything under 1700 rpm has no power nor grunt. Now, along with more power, comes louder grunts. The exhaust starts grunting at around 1300rpm and becomes very loud at about 2100 rpm.
Overall, I don't know what that the ECM reprogramming did, but I am surprisingly happy with the results. I just wanted to let you know what I've experienced. By the way, my overall experience with my Chevy Dealership is excellent. Except for the missing Starbuck coffee and seats (we had to stand next to a counter where the service manager sits), everyone treated me as well as at my Lexus dealer. I am very happy with my dealership.
Anyway, I took my car back, hoping my instrument cluster would not be crazy dim anymore. I got much more than I ever expected.
First, the dim cluster is gone! The navigation still flickers intermittently, but my manager said that there is an anticipated fix for this soon.
So I'm driving out of the parking lot, and I noticed a subtle but very noticeable increase in performance in the car. I thought maybe I'm imagining, but after 2 days of driving more than 100 miles, I can confidently say the following:
1. The torque has improved substantially between 1200 - 2000 rpm. I was on the verge of pulling the trigger on the Pfadt engine tune because of my disappointment with low end torque. Maybe I'm used to my viper SRT (which I sold in 2011), because I truly felt that anything under 2000 rpm in the C7 was unusable. NOW, I can't say that anymore. I can be lugging along at 70mph in 7th, and the RPM is barely 1200, and I can definitely feel a tug when I push in some gas. Before the update, no can do. So, did this update really improved the low end torque on my car? I can now say that THIS IS WHAT IT's SUPPOSED TO BE!!!! I can now confidently say that this car has very usable power between 1500 and 2000rpm. I know you guys might be asking who cares how it is at this low rpm. Well, we all know that it's a great car above 3500rpm. But now, I am not just happy above 3500 rpm, but I'm super happy below 2500rpm, which is where most of my driving is. This is my DD, and I've driven almost 2500 freeway miles in less than 8 weeks of ownership.
2. NPP exhaust is louder. REALLY!!!! Before the update, anything under 1700 rpm has no power nor grunt. Now, along with more power, comes louder grunts. The exhaust starts grunting at around 1300rpm and becomes very loud at about 2100 rpm.
Overall, I don't know what that the ECM reprogramming did, but I am surprisingly happy with the results. I just wanted to let you know what I've experienced. By the way, my overall experience with my Chevy Dealership is excellent. Except for the missing Starbuck coffee and seats (we had to stand next to a counter where the service manager sits), everyone treated me as well as at my Lexus dealer. I am very happy with my dealership.