370z vs 335i Coupe

agray20938

my friend bought a tune for his car, and had to take it off because his 335i was overheating much easier. its not that it over heats stock, its just that bmw doesnt expect you to put 15 psi into the turbos without oil cooler

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That's just my $.02 (or $.03 Canadian)

Blaizon

He must have issues with his car. I have a 08 E92 335i and my wife has an 07 E90. Her car didn't come with the cooler and I took it back to bmw and had them add it. So tell your bud to do that first off!

Secondaly I've never had issues with the car overheating on either car *I'll swap my JB3 over to wifey's car when I don't feel like shifthing*. When running it hard oil temps will get to 250 but that is normal. Now what I do experience is heatsoak which hurts power output due to the smallish intercooler. Some people do run aftermarket OC's but they still experience high oil temps when doing track events *not drag racing*.

370Zsteve

You can call 250 normal, but 250F is well beyond initial thermal breakdown. So IMO you do have overheating issues.

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SOLD MY Z MARCH 2018 - another Core OG moves on - new ride 2019 Z Corvette Grand Sport - no mods necessary but already have eyes on HFC and intakes LOL IT NEVER ENDS.