Review: ETS 4" intercooler
yeah i'm not really sure why a cooler makes more power - by itself..
sure you can run more boost, because your cooling power is greater.
does a bigger cooler increase lag?
sure you can run more boost, because your cooling power is greater.
does a bigger cooler increase lag?
No noticeable lag at all. I believe it has been estimated at .1 seconds to fill the extra space with air. Turbos do flow a lot of air.
No increase in lag, the stock intercooler seems to be a restriction in the setup.
When running Pump perhaps, but I pushed 31psi through it on e85 and it worked great (stock one). Might be slapping a stock turbo on my new build for a month until the motor is broken in, so I will settle the debate with myself possibly soon.
Did you compare it back-to-back with a larger, less restrictive, core? At this point I am ultra tempted to quick order a nice FMIC before my tune in 2 weeks... My Paypal account screams "DO IT!" but the responsible adult inside me says otherwise.
Who knows though, i may find out
Variables. I have dyno results showing 22whp over the stock intercooler. Only thing changed was the intercooler. The intercooler should be labeled more as power retainer 
If you put a stock intercooler car vs an aftermarket intercooler and did 10 back to back pulls the aftermarket intercooler car is going to be substantially cooler.
Here is an example on our 335i 30 secs after 1 pull, imagine 10. The starting temps are going to get hotter and hotter as the pulls go on and on.

When your AIT's get hotter and hotter you make less less power and have a greater risk of knock.
Michael

If you put a stock intercooler car vs an aftermarket intercooler and did 10 back to back pulls the aftermarket intercooler car is going to be substantially cooler.
Here is an example on our 335i 30 secs after 1 pull, imagine 10. The starting temps are going to get hotter and hotter as the pulls go on and on.

When your AIT's get hotter and hotter you make less less power and have a greater risk of knock.
Michael
The way most people dyno.... there really isn't any time for heat to build. You have a couple of massive fans blowing right on the IC. Then they start the car up, get it up to speed, floor it, shut down the dyno and turn the car off. All happens in about 2 minutes. Then they will flash your car if they are tuning, or start it over again.
I highly doubt heat soak comes into play on a dyno.
I can see the stock IC as a big restriction. Murlo, your car with the Red, would have been a great test subject. Oh well.
I highly doubt heat soak comes into play on a dyno.
I can see the stock IC as a big restriction. Murlo, your car with the Red, would have been a great test subject. Oh well.
Variables. I have dyno results showing 22whp over the stock intercooler. Only thing changed was the intercooler. The intercooler should be labeled more as power retainer 
If you put a stock intercooler car vs an aftermarket intercooler and did 10 back to back pulls the aftermarket intercooler car is going to be substantially cooler.
Here is an example on our 335i 30 secs after 1 pull, imagine 10. The starting temps are going to get hotter and hotter as the pulls go on and on.

When your AIT's get hotter and hotter you make less less power and have a greater risk of knock.
Michael

If you put a stock intercooler car vs an aftermarket intercooler and did 10 back to back pulls the aftermarket intercooler car is going to be substantially cooler.
Here is an example on our 335i 30 secs after 1 pull, imagine 10. The starting temps are going to get hotter and hotter as the pulls go on and on.

When your AIT's get hotter and hotter you make less less power and have a greater risk of knock.
Michael
hve you got the same numbers for an X?
I dont know what the 335 cooler is like...
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