Sharkhunt

I know this was directed at LTNBOLT, but I'm going to jump in.

I just plugged my nGauge in that I had left over from my 3.5 Raptor, and man, there are fewer data points available. The 3.5 had iat1, iat2, charge air temp, and ambient. In my 5.0, all of those were gone, except ambient and iat1. Incidentally, do we know where the iat and boost sensors are in the 5.0?

During my initial set-up tests, I took a couple of quick data points. It was about 55 degrees outside. No fans installed yet.
After warming up and sitting at idle for 10 min: AAT 64, IAT 117 ~53 degree delta
Gentle cruising around town for 15 mins: AAT 57, IAT 93 ~35 degree delta

TX-Ripper

The 2018+ whipples use the map sensor that is below the intercooler in the manifold to give you iat temps.

Basically ”Iat” is your true intake air temp after being compressed and cooled and right before entering your combustion chamber.

If if this was an ecoboost, you would call it iat2.

In ours it’s just Iat.

Sharkhunt

Gotcha, so iat1 on a 5.0 represents the same sensor value as iat2 in the back of the manifold. Where is the ambient air temp sensor? The boost sensor was showing about where it should be for my setup, ~10.4psi iirc, but that's not logging, just wot for a a gear to see what it looked like. The map sensor value is 5psi at idle.

LTNBOLT

30 degrees above ambinent. It will drop about 3 degrees more when you open up the the throttle blade going into the pedal.

The one thing I found about the fans is they are doing their job even when idling. Anytime you are idling the throttle blade is closed causing the bypass valve to recirculate hot air making the IAT temps rise.

Without the fans these higher IATs take a long time to cool down when you start moving and opening the throttle blade to let cooler air in.

With the fans the IAT temps drop really fast because the fans are cooling the coolant better when the truck is not moving. The only reason the temps are rising is because the throttle body is closed recirculating hot air. The temps also rise slower with the fans when idling.

Even the larger LTR is not going to take care of the problem of stop and go traffic and sitting in line at the track.

TX-Ripper

I agree 1000%

(but its better then the small one)

LTNBOLT

It's to bad that Whipple doesn't offer the larger LTR to the people at cost with the smaller one on their Stage 2. $600 is a tough pill to swallow after buying their full kit that was supposed to be ready to go. Bottom line is they should not profit from their mistake.

TX-Ripper

While I agree with you, just know that they will alway have some refinement to their kits and will charge full pop to existing customers.

They have always done this.

LTNBOLT

No doubt about that. Just venting a little.

I was using my ole buddy Google and found a forum where someone was asking about a triple pass heat exchanger. Whipple chimed in and said not to do that. All the extra time it takes to make it through the heat exchanger will cool the coolant more but it also slows the flow in the intercooler making it not as efficient. Whipple said dual pass is the max you should use.

TX-Ripper

Did you uses a single relay for both fans?

LTNBOLT

Yes. It is more than enough. You want them bigger than you need so the sudden power surge of the fans coming on does not overload it.