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1G JMF manifold

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I wish I had looked at the thread earlier. Sorry OP.
One problem I am sure was the 90 TB. On my Evo3 mainfold, that thing leaked HORRIBLY. Switched over to the 91+ TB and fixed it. The 90 TB has a different cutout area on the back side that usually never seals on the other flanges. I don't know why, didn't dig into it, just addressed my problem and put the 90 TB on a shelf. Now I have a 90 GSX build that needs that TB so it all worked out good.
Just some of my 1990 experiences that are weird.

Thanks, but I have never run the car on a 90 TB. I switched to the 91+ right away.
 
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