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Message: <blockquote data-quote="ivan12" data-source="post: 706523" data-attributes="member: 10120"><p>I had a 70mm bbk/edelbrock TB laying around that I put on my car when I installed my shorties. I put it on to see if I would feel a difference and I did. But It felt like I lost a lot of low end power and gained it back after around 2500 rpm, what I didn't like was that the rpms would drop really fast while in between shifts. what I Also noticed was that my rpm would stay at 1500-1700 while at idle with the throttle screw all the way out (butterfly completely closed). I thought my idle issues were due to the egr elimination. So today I swapped my stock tb back on and it now idles great. What would cause this to happen? BTW the bbk tb came with ford electronics when I got it and they look brand new.</p></blockquote><p></p>