Eaton Swap issues

[6699Mustangs]

99 Cobra with Eaton swap. I have fuel pressure spikes and irregular boost. I assume this is part of the debugging process. Please help. New bbk 300lhp pump, new filter and new frps.
Boost- egr delete and boost bypass solenoid delete. Didn’t have one and read it would help with WOT boost.

 

[01yellercobra]

Has it been tuned? What's the A/F doing during these spikes?

 

[notchstang92]

I never had either of those issues when I did mine. I did it on an 01 cobra. I ran the Fore hat with Ford GT pumps, dual FPDMs with the GT500 harness, bigger fuel hose from tank to rail with an SCT BA2600 MAF and 60# injectors. I also used an 03 cobra tank. Could you be maxing out the pumps or injectors? I didn't like the idea of the those modified FPDMs or the boost a pump option. I also upgraded the wiring to a bigger size, I forget what size though. It's a common upgrade on 03 cobras so if you search it you should find it.

What did your tuner tell you was going on with the fuel pressure?

 

[01yellercobra]

He cross posted this in another forum. The vacuum lines are/were hooked up to the BPV and FRPS incorrectly. I don't know if that's going to fix everything, but it's a start.

 

[shurur]

99 Cobra Eaton Swap

I know what the differences is and completely disagree with you regarding what you think would happen. I think he would be seeing exactly what he's seeing now if that bypass valve is held closed as I understand his previous post states. Then we can agree to disagree. OP, can you post pics of...

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