I have been searching for 2 weeks and nothing. So here is my problem.
First my setup, rewired walbro 255 310cc injectors and a fum with 10:1 disk running 90-95 lb with 10 lb of boost. OK at 80% throttle I'm good when i give it the rest it goes to lean and you can feel it go lean. It does not matter what rpm your at or gear your in. any help would be great.

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http://www.dsmregistry.com/detail.php?carid=1326

I'm no expert, but shouldn't your fuel pressure be higher at 10 psi? Do you have a wideband, or just a blinky light gauge?

'95 GSX - New motor/turbo going in...
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'03.5 MazdaSpeed Protege - Stock daily driver
'97 CBR 600 - Purple is a real man's color

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i would say to turn up your fp a lil but you have a fmu not sfmu . so whatever it is now is how it has to stay . you cant adjust it . i dont think anybody had luck running a fmu with upgraded injecters

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99 eclipse rst
cobalt blue met. paint,star stage 2 upgraded t3/t460trim turbo ceramic coated , polished compressor housing, ,optima yellow top, chrome i/c piping ,front mount ntercooler ,apexi turbo timer . zeitronix wb02 ,faze oil ,boost gauge,egt ,bosch 4x plugs,kyb agx struts, pro kit springs.17''adr venomous rims,Falken azenis ,brembo dilled/slotted rotors ,turbo xs bov ,oil catch can,manual shiftknob,autometer pyrometer egt , vortech sfmu,b&m fuel pressure gauge ,accel 310cc injectors ,gasketmatched and polished intake manifold ,58mm throttle body ,no egr,polished turbonetics wastegate,fuel pump rewire,homade fcd and a lot more .LED reverse lights ,sidemarkers and tails .atx to mtx swap . South bend tz clutch . Tons more
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http://www.2gnt.com/index.php?d=boosted60trimrst
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This problem just started 2 weeks ago it was running great. and it runs great for the first 5 min in the morning. But once it warms up i can not go more the 80% and if i do it pulls fuel?? i also just replaced the 02 sensor so i know it not that. About to replace the coolant temp sensor. then next will be the tps.

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update

I change my wastgate so boost does no start till 4000rpm. at 2000rpm in 4th with no boost it still goes lean. Any ideas

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http://www.dsmregistry.com/detail.php?carid=1326

Are you sure your FCD/Mising Link is working?


This is why I use the search button.

yes its working useing(full boost at 80% it runs great) the one that came with hann

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I had pretty much had the same prob, everytime I tried to go WOT, the car would run really lean. I'm willing to bet its your fuel filter thats clogged up. Thats what fixed my problem. I could barley blow through my fuel filter with out my ears popping, lol.

Good Luck
DJ

Just replaced it 3weeks ago. Also goes lean with NO boost.

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http://www.dsmregistry.com/detail.php?carid=1326

blinky gauges arent helping. datalog it and ill weld in that bung for the other oxygen sensor.

maybe try and get your hands on an m100 or something

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96 Black ESi
91 Red TSI AWD (RIP)
02 WRX


"turnin wrenches for nine hours in the pouring rain, just to get the beast up and running again"

Aerospace Certified TIG welder for Precision Castparts in Portland, OR.

JoshSpair.com

thats cool but i can still feel it go lean at 100% with no boost so i thinking tps??

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http://www.dsmregistry.com/detail.php?carid=1326

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96 Black ESi
91 Red TSI AWD (RIP)
02 WRX


"turnin wrenches for nine hours in the pouring rain, just to get the beast up and running again"

Aerospace Certified TIG welder for Precision Castparts in Portland, OR.

JoshSpair.com