get a real gauge the cts stops at 25 on lb7s and 38 on 06+ stuff or get the eas setup for the cts which I did so I can watch pre and post psi so I can see how much I losing 
LB7: S366
- Thread starter MAXX IT OUT
- Start date
I have a new driver side intercooler tube so no leaks. My stock tube didn't have a leak either. I need to pressure test it one of these days.
Yellowchevy
in a twin setup my 66 billet has seen 70lbs b4 and normally runs about 55... no problems yet....
I have the same Borg Warner non gated. I see 30-35 on my daily tune and around 42lbs on max with stock cp3 and fuel. With around 1200* egts on a highway pull.
Are you running stock tuning? When i use the stock engine file, i only saw 20 to 25 psi.
No I've got tuning from Kory. This is just on my lowest tune & I don't push it to WOT, about 1/2 to 3/4 throttle.
I maybe expecting to much though
.I still need to pressure test it bad.
Yellowchevy
You should look at that Russ and see whats up.No I've got tuning from Kory. This is just on my lowest tune & I don't push it to WOT, about 1/2 to 3/4 throttle.
I maybe expecting to much though
I still need to pressure test it bad.
Yellowchevy
What are you guys seeing for MPG and cruising and towing temps with the S366.....I want to get a set of up pipes or make them as well as port my stock manifolds and turbo pedistal, and do a intercooler. My tuning may need some adjustment, because it seem like a have a couple of dead spots, mostly at lower speeds where I have high egts and no change in RPM's. Also my MPG likes to take hits very easly.
The best mpg I have seen out of my billet 366 is 25.2. That was on some back roads going just fast enough to hit 6th.
Cruising on flat highway a month ago I saw a range of 19-22. Cruising at 70 my egts are like 650ish.
Highway with lots of hills I am usually around 18.
A tank that's 100% city will be anywhere from 12-15.
My average on my DIC reads 17.3 and my app I use to track each fill up hand calculated reads 17.2.
I had a dead spot in my charger at like 5 psi. Turned out to be a boost leak. My y bridge elbow was missing a chunk at the bottom I upgraded to a solid bridge to fix the leak and my charger spools much better.
I did notice my charger doesn't really like driving in my low hp tune. Truck is smokier, gets worse mileage, and just seems lazy. Running on setting 2-3 it's much better
My truck doesn't like low power tunes ether. My brothers complain about throttle response....Press down a little on the peddle and you start off like normal, then the turbo spools.
Best I have got with mine so far was 31mpg hand calculated. I think the 366s don't like the smaller tunes cause they like the heat.
