BlueMeanies
Member
- Joined
- Mar 22, 2014
- Posts
- 94
- Reaction score
- 6
- Location
- Fayetteville, AR
- Ram Year
- 2007 QCSB RWD
- Engine
- Hemi 5.7
I found a new-old stock Edlebrock 65792 shorty set. This is a Gen 3 ceramic coated header for RWD 1500 5.7. 50 state legal. $250 shipped. At that price I figured what do I have to lose. Put them on this weekend and wanted to give a FWIW before and after review.
The truck has a SC 91 tune both before and after. I cleared the PCM, logged about 30 miles.
Sound: With the stock cat back, no different at idle. I can hear a bit more snarl during acceleration, but the same as stock at cruise.
MPG: Seems to have gained a 1~2 boost both city and hwy. If I put my foot in it the MPG seems better than with the logs. Go figure. I would imagine this will improve as I drive it more and the computer dials in.
Performance: Almost too negligible to tell, but as expected I lost a tiny bit of low end torque. As RPM's build I can definitely feel a mid to high end boost. Not huge but it IS there. The truck feels much more aggressive over all.
So in conclusion IMHO, the shorty's are not LT's, but are a big improvement over the logs. Legal in Calif. They will be staying.
I'm hoping that when the 260 XFI cam goes in that the low end will fill back in and the mileage will stay the same or improve. I'll post another apples to apples at that time.
The truck has a SC 91 tune both before and after. I cleared the PCM, logged about 30 miles.
Sound: With the stock cat back, no different at idle. I can hear a bit more snarl during acceleration, but the same as stock at cruise.
MPG: Seems to have gained a 1~2 boost both city and hwy. If I put my foot in it the MPG seems better than with the logs. Go figure. I would imagine this will improve as I drive it more and the computer dials in.
Performance: Almost too negligible to tell, but as expected I lost a tiny bit of low end torque. As RPM's build I can definitely feel a mid to high end boost. Not huge but it IS there. The truck feels much more aggressive over all.
So in conclusion IMHO, the shorty's are not LT's, but are a big improvement over the logs. Legal in Calif. They will be staying.
I'm hoping that when the 260 XFI cam goes in that the low end will fill back in and the mileage will stay the same or improve. I'll post another apples to apples at that time.
