I've been building this tune for a LONG time now, and I was really happy with how it ran on my (then) mostly stock LB7. I can't use it on my current build, so I thought I'd share.
This tune dynoed 425 HP and 748 lb-ft at the rear wheels. Stock was 250 HP and 500 lb-ft on the same dyno, same day. Or, in other words, a true:
+175 HP, +248 lb-ft
But... it is +175 HP that runs really smooth (stock or better), quiet (stock sounding), gets decent mileage, and doesn't smoke much, especially at sea level. I also feel this tune won't hurt the longevity of the engine at all either. I put 70,000 miles on this tune, and my truck has 285,000 miles on it, still going strong.
Recommended mods:
- Lift pump
- BUILT TRANS!
- EGR blocked or deleted
- PPE boost increase valve
The attached tune is on Federal LB7 OS 15189044. The script is based off that, but should apply to most late-model LB7 OSes. I recommend using a Federal OS, or you can get strange issues with EGR coding or just being a pain. I had to zip the script file, because this site only allow 19kB text files, sorry.
What you need to do to run it:
- Adjust the speedometer and set the speed limiter to the rating of your tires.
- If you don't like a 600 RPM idle, copy {B0701} and {B1201} from a stock tune. But you should try it, you might like it!
Know issues:
- DIC mileage is about 10% optimistic. Never was able to make it dead on. If you know something I don't, please tell!
- Tuning is still less than ideal when the engine is cold. It is as good as stock, maybe a hair better, but I feel there is room for improvement.
Feel free to try it, mod it, whatever*! Let me know what you think. I'd love to hear your feedback, good or bad.
*Of course, use at your own risk, etc, etc. I feel this tune is safe, but I won't be responsible if something does go wrong. Also, don't sell this tune, unless you want to cut me in on the action :angel:
This tune dynoed 425 HP and 748 lb-ft at the rear wheels. Stock was 250 HP and 500 lb-ft on the same dyno, same day. Or, in other words, a true:
+175 HP, +248 lb-ft
But... it is +175 HP that runs really smooth (stock or better), quiet (stock sounding), gets decent mileage, and doesn't smoke much, especially at sea level. I also feel this tune won't hurt the longevity of the engine at all either. I put 70,000 miles on this tune, and my truck has 285,000 miles on it, still going strong.
Recommended mods:
- Lift pump
- BUILT TRANS!
- EGR blocked or deleted
- PPE boost increase valve
The attached tune is on Federal LB7 OS 15189044. The script is based off that, but should apply to most late-model LB7 OSes. I recommend using a Federal OS, or you can get strange issues with EGR coding or just being a pain. I had to zip the script file, because this site only allow 19kB text files, sorry.
What you need to do to run it:
- Adjust the speedometer and set the speed limiter to the rating of your tires.
- If you don't like a 600 RPM idle, copy {B0701} and {B1201} from a stock tune. But you should try it, you might like it!
Know issues:
- DIC mileage is about 10% optimistic. Never was able to make it dead on. If you know something I don't, please tell!
- Tuning is still less than ideal when the engine is cold. It is as good as stock, maybe a hair better, but I feel there is room for improvement.
Feel free to try it, mod it, whatever*! Let me know what you think. I'd love to hear your feedback, good or bad.
*Of course, use at your own risk, etc, etc. I feel this tune is safe, but I won't be responsible if something does go wrong. Also, don't sell this tune, unless you want to cut me in on the action :angel:
. Been telling people mine might be 400 and I'm running a touch more pulse, a good bit more timing, and bring the fuel in a good bit sooner. Pretty simliar for the most part, still trying to clean it up in the 50-75% throttle range before it's really on boost.
