S13Gene

replaced my 02 sensor and idle is alot better afrs, 14.7-15.5 trys to stay around 15... also noticed that if i wiggled my TPS it would try and stall and from what ive gather from the r32 fsm that indicates a bad tps sensor so im going to pick one up from Raw Brokerage and give that a try... there is also a notice hesiation/bog before boost at low rpm then around 3200rpm it feels as if timing is advanced and pulls good, Revs under no load great and coming out of the gas is fine no stalling...

I know this is my first post, this is my attempt to fix my ongoing problems with my USD s13 240sx Rb20det swap 1990 240sx, Rb20det, rb25 turbo 11psi wastegate pressure, sard afpr, sidemount, straightpipe, AEM UEGO, safc-2(Only for Rpm),everything else is stock unknown mileage, ive put 2k on the motor since the swap ran fantastic up until about a week ago it started overboost on wastegate pressure to around 18psi but had good afrs but still backed out as soon as i seen it spike well that stopped and now its lean all the time unless its cold when its cold its like 13.5 at idle and as it warms up it leans out to 15+ all the way to 17.9s. now even at WOT 13.5 is as low as it goes and thats not getting full boost at 5psi i let out any advise or pointer would be great im not asking for someone to tell me what the problem is but mere help me get on the right path, it free revs great, pops after a few hard throttles, Ive litteraly had to plug up safc-2 and at 20% at 800-1000 to get it to idle around 13.7.. The AFR do change at WOT but not much cruising is 15.0-16 spiking around as soon as a WOT 14-13.5 and i let out. Im thinking my Fuel pump is going out as it has been in the car for 2 years, its not a walbro its a Circuit sport 255lph Problem: Lean , Slight Misfire all through out power range under no load, dont notice it under a load Things ive checked: Plugs (.28)gap (white tips) Vaccum leaks found 1 didnt help Fuel pressure 40psi with vacc (my attempt to richen it up Sard AFPR also tried factory FPR) TPS .45 closed 4.10 WOT Boost leaks none held 16psi didnt leak down Maf have not checked voltage but have swap mafs no change Moving wiring no change in idle or afrs CTS is 2.0 ohms cold all Injectors are pulsing via noid light Cleaned up grounds Checked Codes 54,34, was all that came up auto signal and knock sensor which only comes on when WOT trans hits firewall just alittle near starter Also was told that rb20 Coolant temp sensor superseeded 4 times to a 03 350z CTS anyone else heard of this? I work for a Nissan Dealership and that is what i got parts to dig up. please any help would be appreciated feel free to email also @ [email protected]