ok last friday i got my holley AFPR on and set it to about 47 psi. no leaks and pressure stayed perfectly at 47 psi with no losses. then 2 nights ago i added a MBA WS.6 throttle body plate. everything was great until last night on my way home the check engine light came on. i was going down the highway in OD at about 75 or so. figured EGR was messed up for some reason cuz it hadnt come on before i pulled the intake for the AFPR. pulled the code today and sure enough its code 32. didnt worry much, just checked all the vacuum lines to make sure they were attached and went on my way.

that was earlier this morning. then come late afternoon the car started acting up. i cant really describe how it sounds but there is a noticeable difference in how it idles. so much so that my 11 year old brother mentioned it. the car also now has a stumble off idle. sometimes it doesnt do it while other times its a very bad stumble.

what i dont understand is whats going on? the egr is all hooked up and everything looks fine and even ran perfect for almost a week. i even took it to the track last sunday and picked up 2 tenths and 2 mph with the afpr installed. whats the problem? anything i should look at? its about to drive me insane and this along with a few other problems has me thinking about selling.

 

Put a vacuum gauge on the car and see how much you are pulling. You could have a small vacuum leak somewhere, or the EGR valve could be stuck open. If it's stuck open, that's essensially a huge vacuum leak.

 

i was told on a local board that it probably is a stuck open egr. i let it sit overnight and the next day it ran just fine. now its kinda running rough again?

i think its possessed...

 

Good luck finding the problem, those intermittent ones can be fun