blow off valve w/supercharger?
02-03-2004, 04:02 PM
#4
A bypass valve (such as the Bosch unit on the Comptech) is a BOV that feeds it's output to the intake.
If you want to install a BOV you will need to remove the bypass, find a way to mount the particular BOV on the pressurised side, and block the port into the pre-SC side.
Mounting the BOV on the non-AC'd Comptech requires either some hose and a suitable adaptor for the BOV, or some frabrication of a mount on the tube. The AC comes with the same hose flange, but this piece can be unbolted leaving a square four bolt flange that fits various BOVs (SARD??). I'm sure adaptors can be sourced or made for other BOVs.
If you want to install a BOV you will need to remove the bypass, find a way to mount the particular BOV on the pressurised side, and block the port into the pre-SC side.
Mounting the BOV on the non-AC'd Comptech requires either some hose and a suitable adaptor for the BOV, or some frabrication of a mount on the tube. The AC comes with the same hose flange, but this piece can be unbolted leaving a square four bolt flange that fits various BOVs (SARD??). I'm sure adaptors can be sourced or made for other BOVs.
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02-03-2004, 08:00 PM
#9
Whilst Jip69 subscribes to the 'bling thing' argument of fart noises I actually have a slightly more substantial reason for converting my bypass to BOV.
When my car is hot it starts to lose power and stumbles off the mark in stop/go situations. I'm fairly sure this is because the charge air is hot, and a major cause of this is the excess boost being fed back into the intake at partial throttle and then being sucked in at open throttle. I also have reason to believe my Intake Air Temp is elevated and the ECU is seeing this and retarding ignition. I'm running 8lbs of boost and no AC so the problem is even worse than usual.
As we don't have the strict emission rules of California (and other states in the US) the bypass is not a requirement and almost definitely losing me a great deal of power.
So, there's my valid reason for changing to a BOV. Now, where can I get the loudest, fartiest BOV available?
When my car is hot it starts to lose power and stumbles off the mark in stop/go situations. I'm fairly sure this is because the charge air is hot, and a major cause of this is the excess boost being fed back into the intake at partial throttle and then being sucked in at open throttle. I also have reason to believe my Intake Air Temp is elevated and the ECU is seeing this and retarding ignition. I'm running 8lbs of boost and no AC so the problem is even worse than usual.
As we don't have the strict emission rules of California (and other states in the US) the bypass is not a requirement and almost definitely losing me a great deal of power.
So, there's my valid reason for changing to a BOV. Now, where can I get the loudest, fartiest BOV available?
