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Originally Posted by rlith
Pull your upper plenum, look for signs of washing (where one side is cleaner than the other) If the passenger side is washed, you have a bad CPI unit, if the driver's side is washed then you have a bad nut kit... If you replace the CPI, replace the nut kit as a matter of course. As to what the EGR mod is, it's a restrictor plate (not block off) to more efficiently burn fuel in our motors... Look here...This applies to all motors up to 95 (even trhough it says 94)... Also pull and clean your EGR, wire brush and carb cleaner would work...Run seafoam through the engine (seafoam is available at napa and advance autoparts)...
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I went home yesterday and pulled the plenum off and low and behold you guys are good. The passenger side was washed. I am going out today to buy the complete kit fuel regulater and nut kit. AutoZone has it for $270.00 for the fuel regulater I have to check the Nut Kit price. Also wanted to no a little about the seafoam. I looked it up on the net and from what was said it works good. My only concern would be. Will I have to change the O2 sensor and my Boshe Plugs that I just installed 200 miles ago? And also what would be the best way to put it into the intake would it be to funnel it into the brake pressure hose on the back of the plenum? Thanks for all the help saved me alot of $$ all this work can be done on my own very simple.