Is this heatsoak?

[Based]

https://youtu.be/auPE0DHzjJ0

Does this qualify as heatsoak? Read description

 

[frankiefiesta]

Means your intercooler sucks lol

 

[Based]

Oh ok . I will be getting a better one soon. Hopefully just the intercooler with an updated tune will get me some more power

 

[Crooked Letta]

Heat soak is more of a term used when the intercooler can't recover. Like stop and go traffic and your charge air temps wont drop below 20-30 ambient. Like stated before you just have a inadequate intercooler.

For instance it wasn't uncommon for my stock FoST intercooler to heatsoak and even when at cruising speeds (no real load) temps would be 15+ over ambient constantly. If your charge temps never get close to ambient that is considered heat soak. If your charge temps rise when doing a pull this is normal and depending on how efficient your intercooler is dictate how much the temps rise.

 

[M-Sport fan]

With even the most efficient IC out there (DHM Race?), is it impossible for the charge air temps to go below ambient without some kind of a cooling sprayer system (CO2, NOX, etc.) aimed at the IC??

 

[Crooked Letta]

With even the most efficient IC out there (DHM Race?), is it impossible for the charge air temps to go below ambient without some kind of a cooling sprayer system (CO2, NOX, etc.) aimed at the IC??

Think about the statement you just made and think of how an intercooler works. You would need a liquid cooler with something like an ice box to achieve lower then ambient. An air to air, can not go below the air that is supplying the cooling.

 

[BronxBomber]

Think about the statement you just made and think of how an intercooler works. You would need a liquid cooler with something like an ice box to achieve lower then ambient. An air to air, can not go below the air that is supplying the cooling.

Exactly. Now I have seen erroneous readings from sensors causing my AP to display things like this. When I changed my Intake to Mishimoto Cold Air something screwed around with the temp sensor readings and it would sometimes show my charge air temps to be up to 7 degrees cooler than ambient which is impossible with an air to air intercooler.

 

[LilPartyBox]

My charge goes under ambient all the time with my Depo. I assumed like you explained Bronx...bad readings. Makes me wonder what our ECU makes of it when it sees these erroneous readings. I've been toying with idea of getting one of these type of systems - years from now if ever - to truly get charge under ambient. Cost per HP doesn't seem worth it tho.

http://www.nitrousoutlet.com/interc.../x-series-halo-design-intercooler-system.html

 

[LaserWhisperer]

My charge goes under ambient all the time with my Depo. I assumed like you explained Bronx...bad readings. Makes me wonder what our ECU makes of it when it sees these erroneous readings. I've been toying with idea of getting one of these type of systems - years from now if ever - to truly get charge under ambient. Cost per HP doesn't seem worth it tho.

http://www.nitrousoutlet.com/interc.../x-series-halo-design-intercooler-system.html

My DEPO seems to work in a similar fashion, it's funny you'd think of installing an additional cooling system for the IC as I was thinking the same!
I wonder if anyone has done a washer nozzle hack to one of these little STs?

 

[LilPartyBox]

Washer nozzle hack...hmmm...all we'd need a y-fitting and a dream. Picture it. Hot, sticky 100* day and we're the only idiots with our wipers swinging around for apparently no reason as we rip through the gears lol

 

[LaserWhisperer]

ALL FOR THE SAKE OF MOAR POWER!!!

 

[M-Sport fan]

My charge goes under ambient all the time with my Depo. I assumed like you explained Bronx...bad readings. Makes me wonder what our ECU makes of it when it sees these erroneous readings. I've been toying with idea of getting one of these type of systems - years from now if ever - to truly get charge under ambient. Cost per HP doesn't seem worth it tho.

http://www.nitrousoutlet.com/interc.../x-series-halo-design-intercooler-system.html

Yes, the above, or a CO2 cooled version of it, was what I was referring to in my post.

And the whole reason I was asking/questioning the 'lower than ambient' thing was precisely because I've read on here of some (like above and BB's post) showing lower than ambient readings, but without the false reading explanation/reason for this data.

 

[Intuit]

My charge goes under ambient all the time with my Depo. I assumed like you explained Bronx...bad readings. Makes me wonder what our ECU makes of it when it sees these erroneous readings. I've been toying with idea of getting one of these type of systems - years from now if ever - to truly get charge under ambient. Cost per HP doesn't seem worth it tho.

http://www.nitrousoutlet.com/interc.../x-series-halo-design-intercooler-system.html

Answer to that question:
http://rogueperformance.com/IntakeAir.html

Nutshell:
More aggressive timing and some additional fuel.

I wouldn't worry about it on a lower compression naturally aspirated setup but one might be concerned on a high compression turbo setup. My guess is, definitely always stick to higher octane fuel.

 

[LaserWhisperer]

Welp, I smashed into a f*cking traffic cone that fell off a truck on the freeway the other day, while doing 80mph.......needless to say I need a new bumper
Looks like my washer nozzle hack will be coming to life sooner than later.....

 

[LilPartyBox]

interesting read but why would anyone want the ecu to think air is colder than it actually is. it's a recipe for disaster. ur basically telling the ecu it is safe to advance timing when in actuality the air it's receiving may be too hot to safely advance timing.

I doubt that's what is happening during the false readings. worth logging next summer to find out if the ecu is actually advancing timing in response to these false readings.

 

[frankiefiesta]

Couldn't it be possible the temp by the speedo is off?

 

[LilPartyBox]

I'm comparing CATs to the ambient in the AP.

 

[BoostBumps]

FYI...

This issue was discussed awhile ago with respect to the accuracy of referencing Ambient Air Temps (AAT) which is monitored though the ECU with Accessport...

"The Fiesta ST does not have an actual AAT (Ambient Air Temp) sensor, so it relies on the ECU to "infer" temperature via algorithms in place that watch ECT, IAT, CAT, and VSS. There are settings in the ECU to infer this temperature at faster rates with less requirements, but typically it is still grossly inaccurate for anything in need of compensation.

To top this, the Fiesta ST instrument panel is not connected to the ECU along the same CANbus stream like the Focus ST. This means the inferred temperature is not shared with the IPC, and it derives a value on its own. " - Braden Berger (COBB Reverse ECU Engineer)

 

[Intuit]

interesting read but why would anyone want the ecu to think air is colder than it actually is. it's a recipe for disaster. ur basically telling the ecu it is safe to advance timing when in actuality the air it's receiving may be too hot to safely advance timing.

I doubt that's what is happening during the false readings. worth logging next summer to find out if the ecu is actually advancing timing in response to these false readings.

They run pretty conservative timings on some very low maintenance 4 cylinder "econobox" engines.