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Discussion Starter #1
I know this topic is getting beat to death, but I have some more questions. I was looking at an Aulstrian site the other day, and they offered alot of different turbo parts. They had external waste gates, blow off valves, boost controllers, fuel cutoff things-they dont let the ECU cut off the fuel, fuel injection systems, intercooler sprayer kits, etc. So what I want to know is how the turbos work. I have heard of people adding boost controllers, which They had for 60 dollars, which allowed them to run lots more boost. What I dont get is how this is possible without upgrading the ECU, and even then, doesnt the ECU cut off the boost. I want to make my car faster, but Im not sure what route to take. Am I better off getting a new ECU first, then worrying about all this other stuff if Im still not happy. How about the blow off valve, I understand I dont need it, but they had them for 90 dollars, I would spend that for the noise alone. They also said it was really loud, so that seemed neat. It looked like it hooks up to a little tube, but when I see them on cars they always seem to be hooked to the big turbo tubing, not a little vacuum line. Any clarification on that. <A HREF="http://www.autospeed.com/cgi-bin/browse.cgi?category=624&" TARGET=_blank>http://www.autospeed.com/cgi-bin/browse.cgi?category=624&</A> . Ok thats a copy of the website link that I was checking out. <A HREF="http://WWW.Autospeed.com" TARGET=_blank>WWW.Autospeed.com</A> is a neat site for those of you who havent checked it out before, they have gobs of informations. Ok so thanks.
 

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As I was reading through the different types of blow-off valves on that web site, I notice the one called Turbosmart Blow-off Valve Type 3 Plumb Back. It says that it vents the air back into the intake system, isn't that the same as the recerculation valve on the 850s? Does anyone know if that one would perform better in any way, or would there be no difference at all? I hear all the time that you shouldn't put a blow-off valve on your volvo becuase it is expecting the air to go back in, causing the air/fuel ratio to be off. Would this be a way to increase performance without messing up the a/f ratio? Thanks<P>Bayard
 

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The upgraded dumpvalve will be able to withstand higher boost levels as well as be more efficient in letting off the extra boost. You won't get power gains or anything, just lets extra strain off the turbo...<P>
 

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Discussion Starter #4
Im turbo illiterate, so thanks, but I dont know what that means. Honostly, I will just end up paying someone to do the work. What I want is if this stuff is worthwhile to get, and what of it and why. But here is my current situation, I cant see putting all that money in when what I want is better performance. Im thinking of getting a BSR stage 2 kit for my car, that will give me huge power increases, hopefully a lot better performance, and make me happy. If after that, Im still not happy, or I want to spend more money that I have nothing better to do with, I may add some of that stuff. I do believe however, from what I have read, that the recurculating blow off valve thing is the one you have to use with the 850's, the one the vents back into the air box.
 

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There are ways around it, but as of now, the computer is counting on that air to go back into the engine, otherwise your air/fuel level will be out of wack... When you get a cone filter (with the bsr kit) you will get that cool woosh sound. Won't be anything like a BOV, but, its something...
 
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