Sputtering after returning to stock

[Boostdclips99]

I just finished returning the fuel and engine mods back to stock and now the car is bogging and sputtering at 4k whether I'm full or part throttle. It ran fine a few hours before. I took out FPR, 660s, 255lph fuel pump, and dsmlink. Everything was returned to stock. I changed spark plugs back and connected the fuel pump back to original wiring. What should I look for as the culprit?

 

[xxsupralvrxx]

boost leak?

 

[Boostdclips99]

nothing but the fpr line was changed to have a boost leak.

 

[Boostdclips99]

as a slight update I check all plugs, coil, wires, and fuel pump but I'm still having this problem. Any way to check the ecu?

 

[Dsmj89]

Disconnect the battery terminals and re-connect them to reset the ecu and report back. Also check to see if your spark plugs aren't burned out and are correctly gapped for your stock application.

 

[Boostdclips99]

Disconnect the battery terminals and re-connect them to reset the ecu and report back. Also check to see if your spark plugs aren't burned out and are correctly gapped for your stock application.

I unplugged the battery for about five minutes to let it reset but no luck. Also replaced the plugs to bp7res with .28 gap...and no luck.

 

[Dsmj89]

I was going to say get bpr6's, but that won't make a difference, but if you'd like to give it a try then go for it. Also just in case, remember the firing order on the 2g coil pack from left to right/ passenger side to driver side, is 4-1-2-3 in case you might have misplaced a cable.

 

[Boostdclips99]

The car had NGK 6s before I put the 7s in, but it made no difference. I think I have checked the cables a thousand times just to be sure but they are right.

I can hear the fuel pump running so I don't believe it is dead. My guess is either the FPR or ECU.

 

[toofast82]

Im assuming you have the stock chip setup for stock injectors,etc installed?

 

[Boostdclips99]

I just have a 97 stock (non eprom) ecu

 

[Boostdclips99]

anyone have a great idea?