2g falling on its face around 4000 rpm...

[drewgray]

Ok here's the deal, When accelerating my car seems like it falls on its face at around 4000-4500. Around that time, my timing seems to skyrocket to around 30-33 degrees and my egts at wot are around 780-800 degrees celcius. I know narrowband o2's mean nothing but they stay constant at .94. Also, I just upgraded my smic to a supra smic and on both of them after even 12psi pulls it I feel the uicp and its warm almost hot. I cleaned the supra smic before i put it in and it has been pressure tested. Also, my idle likes to stay at around 1500-2000 for some reason and I just put a new pcv valve in. I was thinking my accel problems may be my fuel filter so I am about to put one of those in, but if its not that what do you think it may be? My plugs have about 3-4000 miles on them and my plug wires are pretty new also. I am thinking my water pump may be on its way out, could that be a problem that could associate itself w/ this? My vacuum seems to be alright ranging from 16-18 in-lbs of Hg. I also, just checked my plugs, BPR 7es, and the tips on all 4 are white, doesn't that mean I am running lean? Wouldn't running lean produce knock and knock hence pull my timing? Then how am I getting crazy timing at WOT????? I have been searching for the cause of this for a long time now Please let me know what you think and thanks for your help.
Drew

here is my mod list:
Hahn Racecraft UICP
Greddy Type-S bov
3" downpipe/catback
Walbro 255lph Fuel pump
Mitsu Metal Headgasket
ARP Head Studs
evo III 16g turbo
Fuel pump rewire
Pocketlogger
boost and EGT Gauge
Supra SMIC
Intake pipe / k&n filter


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[DevilSperm]

i was going to recommend a fuel filter half way through reading that...but you are on top of that...change that first and come back if it doesnt help...my friend just had the same problem....changed the filter and it squaks all 4 tires now

 

[Pooldog99]

I have similar mods as you and have the same fall off at ~4300 rpms.

I have little faith in my o2 sensor, but I am ~8.4-9.0 on the palmofcrap(palmnstein).

In my researh, it seems like I may need to tune the fuel pressure and get the supra sidmount-my next task. Please post if you find the problem, I suspect we are on the same path. I am in the mind set to do water inj. along with the supra smic. I may at the same time get my ecu reprogrammed for my inj and mods.

 

[Pooldog99]

I didn't see any fuel injectors or piggyback fuel mods. Do you have any of that stuff?

 

[ddavisaf]

255 lph fuel pump on stock injectors and no control over it.

Get injectors and fuel management.

 

[Pooldog99]

I just found another boost leak. Seems to help a little.