Kelvinparker
Junior Member
- Joined
- Feb 7, 2017
- Posts
- 7
- Reaction score
- 0
- Ram Year
- 2004
- Engine
- Hemi 5.7
Hello all, I am new here. I got suckered into changing my exhaust on my truck to a flowmaster super 40 3" in and 3" out. It is a 04 with the 5.7 Hemi. I use the torque app to watch all the little details my motor puts out.
Here are some findings after I installed flowmaster.
First thing I thought was strange is my intake air temperature skyrocketed it usually only stayed a few degrees above outside temperature but now it stays well over 120 degrees farenheight. It is only 65 degrees outside.
The vacuum sensor used to stay at around 23 in/hg at idle now it stays at 17
The engine load raised by 15% across the rpm board
Mpg dropped by 3 miles per gallon in town and on highway. Cruising at 55mph I could get around 22-23 mpg now it will not go above 19.
Horsepower-gained from 325 to 344
Torque gained from 444 to 455
My question is, am I damaging my motor? I feel the engine may be running lean and that is why my intake temperature is so high. I feel the engine bay may be getting too hot from the exhaust manifolds.
Any advice would be appreciated
Here are some findings after I installed flowmaster.
First thing I thought was strange is my intake air temperature skyrocketed it usually only stayed a few degrees above outside temperature but now it stays well over 120 degrees farenheight. It is only 65 degrees outside.
The vacuum sensor used to stay at around 23 in/hg at idle now it stays at 17
The engine load raised by 15% across the rpm board
Mpg dropped by 3 miles per gallon in town and on highway. Cruising at 55mph I could get around 22-23 mpg now it will not go above 19.
Horsepower-gained from 325 to 344
Torque gained from 444 to 455
My question is, am I damaging my motor? I feel the engine may be running lean and that is why my intake temperature is so high. I feel the engine bay may be getting too hot from the exhaust manifolds.
Any advice would be appreciated
