roboldham Posted January 26, 2003 Share Posted January 26, 2003 Seen it as a performance upgrade. What is it? R Quote Link to comment Share on other sites More sharing options...
adi Posted January 26, 2003 Share Posted January 26, 2003 its a replacement for your AFM (if you have UK spec) with tuning capabilities ! Quote Link to comment Share on other sites More sharing options...
Mark D Posted January 26, 2003 Share Posted January 26, 2003 > what's a "Vein Pressure Converter" ? Is it just me or are there too many jokes that can be made about that comment (or do we tend to shy away from the topic of erectile dysfunction)? Quote Link to comment Share on other sites More sharing options...
THOR Racing Posted January 26, 2003 Share Posted January 26, 2003 Rob, the AFM is the black box situated in series with the air filter. It's a device that measures air flow (Hence air flow meter) and like anything that makes a measurement it will always affect the thing you are measuring. (to some degree) I cannot remember whos principle that was (someone famous in the science world) Was it Heisenburg or whoever you spell it? Any way because it's situated actually within the air flow it will cause a slight restriction to air flow. So when you start upping the mods and expect more air to flow into the engine then the AFM can be a retsriction (much like the CATs on the exhaust) How much of a restriction and how much is just tuning crap I don't know. Never tried it. What the Vein Pressure converter does is replae the functionality of the AFM with a box and a MAP sensor. In Physics the gas laws relate mass of air, temperatures and a whole lot of other stuff together and an AFM measures the air flow and outputs data in one format. The VPC tries to replace this by using a MAP sensor on the throttle body to simulate the measurement made by the AFM (that used to be in the air inlet side, but you've removed to get rid of the restriction). Oh and calm down Mark Regards Pete Quote Link to comment Share on other sites More sharing options...
THOR Racing Posted January 26, 2003 Share Posted January 26, 2003 oh and "whoever you spell it" was meant to be a joke! Quote Link to comment Share on other sites More sharing options...
Adam W Posted January 26, 2003 Share Posted January 26, 2003 Heisenburgs Uncertainty Principle . . .I think . . . but I'm not sure . . . See also, "Schrodingers Cat". The VPC converts to a MAP sensor arrangement, as some people with extra-larg turbos have maxed out the existing air metering setup with so much air flowing through it, not only does it become a restriction but the signal reaches a certain point and then stops increasing. There is no limit on the amount of airflow you can meter with a VPC AFAIK. However, I'm pretty sure that HKS have stopped making them . . . Quote Link to comment Share on other sites More sharing options...
roboldham Posted January 26, 2003 Author Share Posted January 26, 2003 Thanks for the info chaps - looks like its one of those "psychological performance tweaks". I don't think Heisenberg's uncertainty principle has anything to do with pressure measurement tho - its more to do with not being able to know the postion AND momentum of an electron in a quantum system (if you know one with more certainty, you know the other with less) Course, it's been 10 years since I did quantum physics @ Uni :-) - so I may have to go and look up wether or not it can be applied to pressure measurement. R Quote Link to comment Share on other sites More sharing options...
roboldham Posted January 26, 2003 Author Share Posted January 26, 2003 Originally posted by Mark D Is it just me or are there too many jokes that can be made about that comment (or do we tend to shy away from the topic of erectile dysfunction)? No, it's just you. R Quote Link to comment Share on other sites More sharing options...
Gaz Walker Posted January 26, 2003 Share Posted January 26, 2003 The VPC is useful when you go to big twin or single turbos as the AFMs would be in the way of the huge induction piping, it would then be a restriction... You would normally have to modify your lovely stainless piping that you get with such kits too... Gaz. Quote Link to comment Share on other sites More sharing options...
Need4Speed Posted January 26, 2003 Share Posted January 26, 2003 Heisenburgs Uncertainty Principle . . .I think . . . but I'm not sure . . . See also, "Schrodingers Cat". Correct but a bit intellectual:) Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.