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      01-16-2020, 03:35 PM   #41
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Drives: 2017 Bmw M2 6mt
Join Date: Aug 2018
Location: Canada

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Originally Posted by ZM2 View Post
Follow up question for you, Sir:

For hot summer days at the track, where do you think the larger turbo, boost, Emix, and IAT balance is in terms of additional HP over my current setup (BM3 Stg 2 E30, Dinan turbo, Wagner Evo II Comp, HJS 300-cell DP)?

Overall, can I really expect much of a consistent HP gain on track in the summer without additional IATs?

Or, am I still stuck with doing Meth, custom oil cooler, larger FMIC, and/or custom liquid to air IC no matter what?

It would be great to add “more efficient” power, but it seems wishful that higher HP won’t yield higher IATs.
That's an extremely difficult question as this varies alot depending on climate, altitude, driving style etc. Anyone who had a magical number for you would likely be lying imo as this is hugely variable per car.

First my question is:
What's your power goals, and what are your cooling mods? Because the stock cooling system can barely keep a stock tuned car cool under track conditions.

In regards to iats as you increase boost iat's will rise with it, in order to get a hp gain without too much additional iats get an upgraded turbo that can flow more air at a lower boost which can translate to more power without or even an iat drop.

You'll likely need a larger oil cooler and radiator with a tuned setup for consistent performance in 30C + weather during the summer, you likely won't need a custom setup untill you upgrade the turbo past stage 1 all though this can vary. You probably won't need an air to water intercooler setup, meth would be helpful but you likely won't need that either with ethanol, since higher octane fuels helps combat high iat's. Just check your logs and see if iat's cause timing to be pulled, it shouldn't happen when running E30, although your hpfp can crash on the track.

It's possible if you get a really large turbo that runs lower boost, your iat's post intercooler will be lower than running a smaller turbo at high boost and out of it's efficiency range and the power will be the same in both cases. However more power means more heat and you'll run into cooling system issues.
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