I have a SN95 5.0 and I was going to relocate the ACT sensor to the runner #5 of the lower intake manifold until I saw burnt oil vapor traces around the runner walls, which could lead to ACT sensor failure. But with KB supercharger, I had to do that regardless.
It helped me understand how it works and how to adjust if needed. Can you or have you ever tuned a car with the ACT just sitting on the intake cause they didnt drill it into anywhere after adding a different lower intake?
your vids are too informative.. jk i dont tune but love that you do give data and are like look this number is higher than this.. and this comes from a guy that used a 200 mercury sable tps on his 89 5.0 aod with an a9p ecm
Question ❓ could I use a stock 95 Cobra R computer on my Fox body and relocate the ATC sensor to the cold air intake would it be worth any performance gain ? 🇺🇲🇵🇷🦊👍
Bought my car earlier this year. Just found mine stuffed under the intake. Gt40 intake with no provision for it, so they just left it sitting on the intake and hid it lol
Is it equally important to have your ACT sensor in the intake tube if switching to a CBAZA ECU? Application is a Ford 460 with the ACT sensor in the manifold.
I have a gt40 lower with no act boss. Should i tap a port underneath my explorer upper since its closer to the original placement or put it in the intake tube? Car is a stock 89 coupe
Are you saying that the actual air temperature is going to match the radiant temperature of the lower intake? Have you logged that ACT value and compared it to an IR reading of the intake temperature? I have a hard time believing that the air temperature would gain 50° to 100°+ in the short time it travels through the intake.
The sensor itself is heat soaking from the temperature of the lower intake’s metal. I do not believe the air is actually heating up that much from air filter to combustion chamber.
@@LeechMotorsportsSo you're saying that the stock program, or tune, is factoring in the temperature of the heat soak and setting the parameter with that for the operation of this sensor? I bought this 93 Mustang with a Explorer GT40 upper and lower intake but the intake is not tapped for the sensor and the sensor was not even there, just an empty connector. I was considering Drilling and tapping a hole in the cold air intake tube and putting it there but if you're saying that it would not even operate, then do I need to consider pulling the intake and Drilling and tapping it there
It will read substantially cooler if installed in the Cold Air Intake tube instead of the lower intake manifold. And because the stock tune is built around the higher temperature readings, the timing/fuel modifiers based on ACT readings will not operate as designed.
🔔👍👍 Thank you. Just what I needed to know. Stock 90 GT and to be a 2001 EXP non-egr which does not have an ACT boss on #5 lower (and EXP 65mm TB) I will look at putting it on #5 upper at the dividing line. Thinking... If the 65 TB makes it leaner, would the ACT by the TB or CAI make it richer? Just thinking.😁😁 Thanks. (Might let you tune this. Only 300 miles away)
300 miles? Would love to have you bring it down. Will have some availability in early July. The biggest problem is that when you move the act off the manifold, the sensor reads a much lower air temp. The stock computer must reach temperatures over 100 on that sensor in order for adaptives to kick in. You’re unlikely to stay in that range consistently other than summer time.
A few questions. Number one, has anyone tested these values under boost?? And is it possible to just take the act and stick it in the upper intake close to the throttle body??
I have never seen one installed directly I tot he upper intake, though I suppose that would be possible in that area. I suspect it would still suffer at least some from heat soak compared to being directly in the intake tubing before the throttle body.
Thank you for the quick response. I did some research and pretty much found the same answer. People install them in the charge pipe before the throttle body
On a boosted application with custom tuning, that is definitely the way to go. But on naturally aspirated applications or untuned stock computer applications, it should be left in the stock location. I also did an experiment last weekend where I made an attempt to completely disable the act sensor from the equation. Our pal Frank Adam’s up in Tulsa installed an explorer intake and we didn’t want to tap the lower for the sensors. I believe so far the attempt succeeded but waiting to see how it does when the weather cools down.
@@kylekoch4815 gotcha. Yeah I need to do a video about this for Holley efi. The issue on that side is that the out of the box air temp fuel compensation will need to be adjusted greatly depending on sensor install location.
