94 22re running lean and hard to start

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Joined
Oct 16, 2011
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I have a 1994 22re 160k tps checked out ok, new afm, new denso 02 sensor, new coolant sensor,injectors have been rebuilt, and new iac. I replaced the head gasket this past winter using a toyota head gasket and eb 261 cam and his street rv head. Now for the problems code 25 which is air/fuel ratio lean, I can reset the ecu and as soon as i get on the freeway the code comes back and it starting pinging badly even running 91 octane. I have tried to adjust the afm a little richer with no change in the pinging. Timing is 5 bdc.

Not sure if its related but during a warm or cold start i have to hold the gas pedal 1/2 way to get it to start :bang:
 
Fuel filter was also replaced when I did hg and I had the code 25 before I replaced the hg. Also the fuel pressure is within spec.
 
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