D15B1 restrictor plate
Thread Starter
Joined: Nov 2002
Posts: 49
Likes: 0
From: Olympia, WA, USA
D15B1 restrictor plate
will removing the restricor plate cause any problems? Will I have to get a pm5 ecu instead of using my pm9? Is the exhaust manifold on the 91 std the same as the si? 
Honda-Tech Member
Joined: Apr 2002
Posts: 3,196
Likes: 1
From: Baltimore, Md, USA
Re: D15B1 restrictor plate (91 civic)
If the restrictor plate is that stupid brass colored piece of metal in the air chamber removing it does nearly nothing, my car seemed exactly the same before and after.
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