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X5 E70 (2007 - 2013)
E70 BMW X5 produced between 2007 and 2013. Discuss the E70 X5 with other BMW owners here.

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  #1  
Old 01-18-2013, 12:51 PM
Brian425 Brian425 is offline
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Mein Auto: BMW X5 50i
Dinan Intercoolers

I currently have the Dinan stage 2 tune on my 12 X5 50i. I am considering adding their intercoolers. Has anyone installed the intercoolers? What were your real life experiences? Power gains, consistent power without heat soak issues, etc.
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  #2  
Old 01-18-2013, 01:07 PM
RockChips RockChips is offline
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I hope you are using quality fuel
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  #3  
Old 01-18-2013, 01:45 PM
BeamerandBimmer BeamerandBimmer is offline
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Quote:
Originally Posted by RockChips View Post
I hope you are using quality fuel
I would make that assumption, but what do better intercoolers have to do with good fuel. As a matter of fact you could probably run a lower fuel quality with better intercoolers.
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Old 01-18-2013, 01:51 PM
RockChips RockChips is offline
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I was addressing the tune he already has.
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Old 01-18-2013, 01:57 PM
Brian425 Brian425 is offline
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Heat soak is always an issue with turbos and even more so when you try to make more power. By reducing the intake air temperature, you effectively add more oxygen allowing you to make more power. I am curious if people are seeing real power gains and more consistent power.
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Old 01-18-2013, 03:59 PM
Brian425 Brian425 is offline
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I alway buy the best fuel I can. In general, I buy Sunoco 93, or the highest octane I can find at the pump.

I also try to avoid stations that appear run down. If they let the outside look like crap, I do not trust them maintain high standards storing and pumping their fuel.
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Old 04-15-2013, 08:56 PM
philooo philooo is offline
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I'd be curious to hear if the car runs cooler with the intercooler.

My car has the fans on full blast all the time each time I stop to a light.

Phil
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Old 04-15-2013, 09:27 PM
Brian425 Brian425 is offline
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Intercoolers will not help engine tempature. They cool the intake charge allowing a more dense air/fuel mixture to be forced into the engine. The better intake charge will give you a little more hp. The big gain is more consistent hp.

It is a common issue for any forced induction vehicle to lose HP on very hot days or if in stop and go traffic or racing.

Back when I was racing, turbos and superchargers were just getting popular. It was common to leave the turbo guys on the line spooling up as long as possible. The idea was to have them build up as much heat as possible ("burn them down). (Better intercoolers and mutliple turbos has made this less beneficia; but, it is still real.)

If you want to drag race you X5 50i, the right way to stage you vehicle is to pull up until you light the first amber, build boost and bump in (edge forward) to light the second amber. The other racer will know what you are doing and will be able to stage his car properly.
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