chris_bramley Posted November 17, 2004 Share Posted November 17, 2004 I posted recently regarding a flapping I can hear in the HKS 'shroom (befoer the "frog croak"). I;ve only been hearing this since I took the stock BOV out (it blew; last owner didn'tuninstall it when he put the blitz in). So, the BOV was installed, the car was tuned, and now the stock BOV has gone. I've binged up the turbos and the vacuum tube as per instructions on removal of the stock... and I've lost like .2 bar of boost, and I now get that flapping noise outta the HKS filter. can someone instruct me in the art of tuning the aftermarket BOV to prevent this flap fwsshfwsshfwssh noise? i hear some ppl think this is normal but a coupla mechanic pals say it's not ideal, I get that noise echo and lose performance - and it could be where me boost is at. Ideas? Link to comment Share on other sites More sharing options...
chris_bramley Posted November 17, 2004 Author Share Posted November 17, 2004 riiiight... found some info! Appears this is probably compressor surge which isn't great. i have adjusted the BOV to dump earlier but I think I can still hear the flutter. this has only appeared after I removed the stock BOV. Replacing it isn't an option, so help! I need to solve this (along with another few minor issues). Oh and could the drop in bar be due to the aftermarket BOV being in the intercooler assembly, and the stock one being right next to the turbos? so havign the car tuned to 1 bar with that ON then removing it (and removing the need for that little pipe over the engine) would drop the bar? Or am I just talking shit?! Need to talk to Dude bout loads of stuff but I NEVER manage to call him at the right moment so still trying to talk to him Link to comment Share on other sites More sharing options...
250horses Posted November 17, 2004 Share Posted November 17, 2004 Look at this thread and also check out the Apexi fitting instructions. I gained .2 bar when I removed the Toyota BOV. http://www.mkivsupra.net/vbb/showthread.php?s=&threadid=28446 Link to comment Share on other sites More sharing options...
chris_bramley Posted November 18, 2004 Author Share Posted November 18, 2004 Originally posted by 250horses Look at this thread and also check out the Apexi fitting instructions. I gained .2 bar when I removed the Toyota BOV. http://www.mkivsupra.net/vbb/showthread.php?s=&threadid=28446 Thanks dude, but read it and done it already - it was my first port of call. I used the same wilkinsons rubber feet, and blocked the lot off, but I STILL get compressor surge, even though I've adjusted the BOV to dump earlier, and .2 is missing... odd! the real BASTARD is that because the stock one had obviously gone a little while b4 I bought the car, the first turbo is now whining due to overcompensation. WOD, anyone? Link to comment Share on other sites More sharing options...
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