Stealth ram intake. 383. Runs good otherwise. If I progressively press the pedal to WOT the problem doesn't exist. However if I go WOT instantaneously the car completely shuts off for a split second and then picks back up. No SES lights, nothing. I have the EBL ECM from EFIdynamics. I datalogged it to see but it tells me nothing. It appears in the laptop that the car is completely shut off during that 1/2 second. This problem appeared out of nowhere so I have my doubts that it has anything to do with the tune. Loading the parts cannon... I have changed...

ignition coil
Ignition control module
Map sensor

The distributor, plugs, and wires have maybe 800 miles on them. Anything else to try? Anyone have or had a similar problem? Should I take this to the DIY PROM section?

 

AE ?

 

Is there something specific I should be looking at there? I'll double check the datalog tonight but I'm %99 sure the dummy light comes on when I accelerate.

 

What does a wideband show during the event?

 

Narrow band blues. However I did notice in the datalog that the readings from the O2 are very erratic during normal ops.

 

Erratic as in goes back to .450mv at idle ?
Not sure how your able to tune wot targeting .950mv or so ?
might try adding fuel for pump shot to see if that helps with it not falling on its face.
a wideband is a inexpensive necessary tool to have.

 

Large cap HEI with vacuum advance??

 

This scenario will probably be the one that makes me pull the trigger on a wideband

 

Large cap electronic advance