Pop Then Slug?

[Black Sun 5.0]

If you check out my mods, my car shouldn't be a slug, but half the time it seems to be. I noticed the other night when I was driving, the car was in a 'fast' mood, and I was driving normal. All of a sudden, I get a pop in the exhaust, and all the power seemed to be robbed from the car. Does this sound familiar to anyone else?

 

[1986LX2002]

Check your timing? Something similar kinda happened to me, my distributor hold down clamp came loose and my dizzy moved a little bit and the car had no power at all, 5min fix though.

 

[Black Sun 5.0]

This seems to be a bit of a consistent thing. It pops the most when it's cold.

 

[90mustangGT]

I see you have a catted X pipe, which brings me to a situation I had at work last week. A honda accord came in with the same problem, it kind of make a pop sound in the exaust, loose power, then another pop sound and power came back quickly. Found out that it was a converter that had come apart inside and the chunks would get in the right position and block the exaust. Replaced the cat and the exaust system, problem solved. The car had a lot more go after the new exaust.

Check to see if your cats are rattling or if there is any in the cat-back.

 

[Black Sun 5.0]

Brand new X-pipe, and no rattling. I just replaced the H-pipe because I suspected something was wrong with it. Also, it's a brand new engine.