VABeachSHO
New Member
I have modified a 2012 PP SHo as follows, Stage 4x Plus tune from LMS, 160 deg T-Stat, Cold plugs, 3 bar MAP sensor and Air Raid intake. I have been running the Torque Pro App recently on my Android phone and it is connected Bluetooth to the OBDII port. The information I get is like reading a good book, fun and interesting but does not end with any actionable items.
This is the SHO at idle, outside temp is 72 deg. Remember, T-Stat is opening at 160
SHO cruising at 30mph - mostly vacuum at cruise. max vacuum seen is around -11.8psi
SHO under modest acceleration.
Some interesting points.
Intake temp is inverse to speed. Faster = cooler intake temp and closer to ambient temp. Much bleed from the engine at idle. Cold air intake = myth. Analysis of ANY intake with the hood open = nonsense. I would like your thoughts regarding protecting the air intake from the bleeding of high temp engine air. As soon as you slow down, the intake temp rises.
T-Stat is opening to the radiator at 160 deg F. Coolant temp seen on the display appears further down stream and has seen some temp rises from the engine. Max temp seen at sensor is 208. I'm not sure where the coolant temp is located (discharge/return to radiator?) Your thoughts?
Boost. The SHO runs in vacuum mode most of the time. Max boost as noted by the sensor is around 14 psi overcoming the vacuum of -10 psi inherent to the operation of a normally aspirated engine. I spoke to Jamie at LMS and he said this was consistent with his expectations. He remarked that the 3 bar MAP sensor allows for tighter/more refined tuning that produces more hp.
Anyway, I enjoy seeing the information. I have the phone mounted so it is easy to see. It doesn't change my driving habits. It doesn't lead to more hp. It's just like a good book that is a good read.
This is the SHO at idle, outside temp is 72 deg. Remember, T-Stat is opening at 160
SHO cruising at 30mph - mostly vacuum at cruise. max vacuum seen is around -11.8psi
SHO under modest acceleration.

Some interesting points.
Intake temp is inverse to speed. Faster = cooler intake temp and closer to ambient temp. Much bleed from the engine at idle. Cold air intake = myth. Analysis of ANY intake with the hood open = nonsense. I would like your thoughts regarding protecting the air intake from the bleeding of high temp engine air. As soon as you slow down, the intake temp rises.
T-Stat is opening to the radiator at 160 deg F. Coolant temp seen on the display appears further down stream and has seen some temp rises from the engine. Max temp seen at sensor is 208. I'm not sure where the coolant temp is located (discharge/return to radiator?) Your thoughts?
Boost. The SHO runs in vacuum mode most of the time. Max boost as noted by the sensor is around 14 psi overcoming the vacuum of -10 psi inherent to the operation of a normally aspirated engine. I spoke to Jamie at LMS and he said this was consistent with his expectations. He remarked that the 3 bar MAP sensor allows for tighter/more refined tuning that produces more hp.
Anyway, I enjoy seeing the information. I have the phone mounted so it is easy to see. It doesn't change my driving habits. It doesn't lead to more hp. It's just like a good book that is a good read.