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Idle Intercooler Heatsoak


Garrettba03

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can do that with tuner. I have a gps looking scantool that I have setup to show inlet temps.

remember its not just the intercooler that heatsoaks. piping, crossover and inlet manifold all soak up heat.

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  • Member For: 13y 7m 2d
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Naah no xcal it was a direct ecu remap see what he says about temps because he mentioned on my last tune inlet temps were high.

Now that I think about it the car was already warm b4 I started it up as I had to move it just 15 minutes before I was going to leave work.

Im going to speak with my tuner tomorrow and more over try to replicate the problem I have the day off so heaps of time (after I take off my parents brand new front discs and pads I fitted on their el on sunday...because I forgot to put the hubseals on :bangcomputer: then refit lol).

Intresting about the xcal and scantool though...good feature to see that.

Edited by Garrettba03
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  • Member For: 13y 7m 2d
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My pipes are stock so majority is plastic which wont heat soak...which leaves intercooler and crossover. I dout the crossover will heat the air significantly due to speed and pressure of the boosted air going through it-no time to transfer significant heat to air (and no fins). If the intercooler was still too hot to absorb and dissipate extra heat created from compression of air by the turbo @10psi, this makes sense-heat would have nowhere to go. My mechanic says its possible :dontknow: but hes not sure.

If it is a heat related issue, ill hopefully find out tomorrow, but that what it feels like to me

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It's also worth noting that the air coming through the crossover isn't pressurised.. Yes it'd be rather high velocity but it's gotta pass through the turbo before the pressure is greatly altered from atmosphere.

My last car being a WRX suffered from heat exchange when idling after being run hard with the intecooler mounted directly above the engine.. I think the problems gotta be more then simple heat exchange.. Especially with 18*C temps outside and car going from absolute cold then just idling for 10 mins..

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  • Member For: 13y 7m 2d
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true, everything gets real hot after idling 10 mins...underbonnet,intercooler everything.

The intercooler is hot to touch 10 mins idling, super hot to touch after about 13 mins idling...cant help the airtemps. Problem was duplicated. By the time I drove about 1km, gave it 3 good hits, and on the third hit power was back to normal turned left into my driveway touched the intercooler and it almost burnt me lol...wow

I think its a comination of heat everywhere and the ecu cutting timing/power

Edited by Garrettba03
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  • EVIL T
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  • Member For: 16y 1m 9d
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are you saying that the cold side of the cooler is too hot to touch while idling? that doesnt sound right...

even at idle, once your engine is up to temp, the thermos will cut in and draw in that 18 deg air through the cooler, it should not get hot at all....

even the uncompressed air passing through the cooler at idle will not be that hot, it only gets warmed up as it passes through the turbo housing which will only add a few degrees to it... so even the hot side of the cooler should only be slightly warm at idle.... cold side should be stone cold still if ambient is only 18 degrees

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  • Member For: 20y 11m 4d
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Mine does similar after sitting in traffic for half an hour and then squirting when it opens up. Feels slower than stock and revs harder then returns to normal after a minute so I know it's just cooler heat soak.

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read the intake air temps from computer to see how much heat these things pick up sitting in traffic. one moving it drops pretty quick.

I get heat soak with an aftermarket cooler too. Getting readings from OBD2 port and it climbs from 3 deg above ambient to up to 20 deg over. It's does cool slightly with radiator fans and more so when up to 80kms/h and over.

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