Quote:
Originally Posted by Puerto Rican 335d
Lemans play it safe email carsten
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Thanks Puerto,
I like to participate in the debate to give you some info and
which i have found when built my Dracer.
At first sorry my pour pour english
. I know that you are understanding my words and writing somehow, but hope that i managed to wrote this the way that there is a point in the way i ment it to be and i'm not making my self a dumbass. So be gentle fellows!
I have a euro 535D with the highest x35D hp/torque readings what I have found on the Internet. I have a straight pipe and car is running max 2.5bar of boost.
The most important mod there is at this point is that all of you should be concerned about is over pressure. Our cars are able to handle +/-0.4bar tolerances from asking pressure. After that comes limp mode and you have to restart your cars to get it back to normal again.
And that's not the biggest problem there.
It's not healthy for turbos and either way those are not working correctly if there is too much chargepressure.
Reason for that is that there is too tiny airline in the wastegate and it does not have the possibility to let the air run out enough, because it is rated to operate only with the factory program. So here come overboost and it's problems.
There are only two options to fix this situation. Either you unplug the turbos of the car to your hands and work on the interior of the original wastegate for a larger metal outlet, or close hole thing from working (valve which operates by the pressure) and attach a new bigger separate wastegate.
This way you are doing it "healthy" right from the start. And now before you drive your vehicle to reprogram/tune specialist (dont buy those universal tuned x35D programs, because every car has life of its own so you need to do it on dyno and a few road test with guy who knows what he is doing) it might be good thing to think about getting a bigger intercooler also, because now you have all the mods needed to get everything out from your injectors and turbos.
I have been playing with turbo cars and aftermarket intercoolers for a while now and i know that things you are talking about here are important. But allmost always it's not rocket science when you are planning right size ICs. If you are using bigger IC than oem and make it to optimum plant and simple tubing then its most likely have a better cooling and flowing powers and in most cases lower boost trop than orginal have also. Either way boost trop is normally so very minimum that it dosnt efeckt anything.
But i also understand when you are buying expencive bolt-on ic kit that you are entitled to know all of its working features. Even there is not (big) difference in real world hp/torque numbers if it has been done by wagner germany or copy #ucker china.
It's about size, location and simple silicone tubing that matters most...
My opinion is that X35D have too small IC after when your tune/car is making over 2.1bar of boost. But on the otherhand and if you want to play it safe there is not such thing that over cooling/flowing intercooler. And it's always healthier to get same temperature than outside as near as possible. But it is the point when you floor your car and get hotter than ~60 celsius boostair temperatures when you are starting really loosing you torque numbers. And things goes worse and worse very quick after that...