Originally posted by Seattle944t:
<font size="2" face="Verdana, Arial">Could someone expand on this? Is there one of these on my non-svt ZX3? If I understand correctly, there's a bypass chamber in the TB? Is that why the RPMs linger at 3200 when I clutch to upshift? Could someone describe where this is so I can proceed to block it as soon as possible?There is an intake bypass track that allows air past the throttle body even when fully closed. Quick RPM changes wreak havoc on emissions control equipment so that is why it's there.
My previous car, an SVT Contour, was the same in this respect.
Plug the bypass tube (don't know what hose on the SVTF, but it was a well documented fix on the SVT Contour) and the RPM's will drop faster. But you'll also lose a couple HP since your now restricting the air flow into the engine.
Kinda sucks if you ask me, and it makes for lazy shifting since you have to wait for the revs to come down.