I don't know if any of you already know this but for those of you who don't... If you own a 88-91 dx civic or crx you've been missing out on something. Check it out, open the top of your dual point cover look down in the hole with the screen over it now press the throttle cable all the way(as if you were flooring it. notice anything weird about the butterfly plate?? yea.. it doesn't open all the way does it? A HONDA mechanic showed me this and he said that there is a little piece that you have to bend and then it will open all the way. not sure exactly what.(I'll get pics soon) Also theres a gasket where the throttle body connects to the manifold. It is extremly restrictive!!! you have to buy a new gasket and cut it to the actual bore of the manifold. I think he said it was so restrictive he could'nt have droped a quarter in there! I'll be correcting this problem saturday and let you know how it goes Boy was HONDA thinking economy or what.. restrictive gasket and butterfly?? no wonder my shit bogs all the time. hope this helps DX owners.