I have a 94 LT1 Camaro with a LT4 hotcam setup. I have the usual bolt on's with headers and catback. I am running a stock throttle body. I just replaced my opti last week with a brand new one and also installed the MSD rotor and cap. I have been driving my car for the last few days but appears to be bogging and you can hear the fuel sputtering sometimes when I drive. I have brand new O2 sensors installed. I must say I did swap out my old v6 engine and installed this one. It works fine other than this but should I maybe swap a V8 fuel pump in the car?( still running same V6 pump).
Also I have stock pressure at 42 psi with a custom tune from pcmforless.

 

Replace the coil and plugwires first. LT1 coils will breakdown and cause usually higher RPM stumble, it happened to me a few weeks ago.

Low RPM stumble can be traced to the wires especially the coil wire.

 

Yes I actually replaced the coil yesterday. I have a new set of taylor wires installed also. anything else to look for??

 

Get a spray bottle and fill it up with water. Spray the wires and listen for arcing which will sound like pop pop pop pop pop etc. If the wires are arcing you will easily hear it as well as see it especially if its dark. Do this especially down around the opti.

I had a new set of wires that arced and cause stumble galore, replaced them with MSD and the problem was gone.

I have heard mixed things about Taylor wires.

 

Thanks. I will try that later today.

 

Any Updates on the problem? I have a similar problem, and would love to know you fixed it. I am waiting from a OBD-Y cable right now, so I can freescan my car.

 

Yes I fixed the problem. It was my sparkplugs. I changed them back to AC Delco's and the car has been running fine.