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Discussion Starter #1
You've probably already seen this if you're on "the list" :

When I first got the car, at around 4000 rpm I could FEEL #2 come online. Now it's hit and miss. It's not consistent. And if I downshift, oh no! Feels like no boost! But once I upshift, you can hear it spool up and go again. What the hell's going on? My setup is:
93 Supra TT stock
:)


Here's what I wrote back after someone told me to check the egcv.

Okay. I crawled under there to test it and all I can find is one big
actuator. (Is turbo #1 up front or in the back?) Is that the wastegate or
exhaust bypass valve? Whatever it is, it won't move by vacuum or by hand.
Also, I found that you feel it pull twice in 1st but in the rest of the
gears its steady. Is that normal? I have a greddy boost gauge on order, I
think I'll wait till I get that before I further diagnose. I was looking in
the manual and it says that if your egcv is bad you have to replace the
whole turbo! Also, if all this is normal, I was looking for a BCC and
there's only one listed for the mr2. Is that the one I get?


TIA

Troy
 

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458 Posts
Yep that's the right BCC, just set it up like on MKIV.com and it will work fine.

If that ceramic butterfly gets messed up it could act like that a little.
 
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