okay, weird issue arises...please offer any and all help

[axnjaksn]

I have a 2001.5, stage 3 - 6 speed....im trying to finalize my tuning, but recently ive been getting a lot of timing pull shown in my logs and even shooting straight to lean(14-15 afr) appx 6k rpm and above. then randomly, ill cruise around 10-15 miles of normal city driving then I pull in somewhere and let her idle to check values and such...5 minutes in to idling...she starts misfiring and afr shows super lean, basically pegged to lean....
mods:
SRM k24's
walbro 450 pump with the srm billet adapter
bosch 60# ev14 injectors - modified intake manifold to mount injectors in correctly
awe intercoolers with carbon fiber shoruds
samco intercooler and intake hoses
phenolic intake spacers
apr bi pipe and r1 dv's
88mm MAF housing
3 bar map sensor
rs6 coil conversion with all related plug and play wiring with icm deletes
awe fuel turbo back with hi flow cats
egt's new
front o2 sensors new
driver side rear o2 sensor new, pass side has the innovate wideband sensor wired up through the harness and coded out.....for logging harnesses
relatively new spider hose.......
relatively new fpr

ive pressure tested and smoke tested and replaced spark plugs and gapped them correctly
replaced the FPR...its the weirdest thing ive ever come across, car will drive perfectly normal, then this
is there something im missing or a fuel pump relay thats giving me hints of retirement or?????
i can log blocks 32. 001, 002 and all the values look normal until it starts acting up...

any and all help with this is appreciated.....

[Corradovolksb]

I'd be looking at fuel pressure. A single 450 should be able to keep up with your setup as long as you have it hard wired with a relay to battery power. The idle lean issue is strange but could be fuel pressure related also.

[axnjaksn]

I'd be looking at fuel pressure. A single 450 should be able to keep up with your setup as long as you have it hard wired with a really to battery power. The idle lean issue is strange but could be fuel pressure related also.

ok, when you state hard wired, can you specify....im a tech and can handle the specifics... just lay it out straight so I can get it correct....I appreciate the help!!!

[JVD]

ok, when you state hard wired, can you specify....im a tech and can handle the specifics... just lay it out straight so I can get it correct....I appreciate the help!!!

He means wired directly to the battery. Not using the factory wiring.

[axnjaksn]

He means wired directly to the battery. Not using the factory wiring.

ok, so 12 volt source for powering the fuel pump directly to the battery ran through a relay and ignition switch that i wire in, with the signal/trigger wire from the original signal from factory wiring?? Im asking for specifics so I can just handle it and not experiment, if there is a tried and trued - do exactly this and that... id love to know exactly what it is. believe me wiring diagrams and such work great too.... i work for benz and have to translate them every damn day

[reverse.rake]

ok, so 12 volt source for powering the fuel pump directly to the battery ran through a relay and ignition switch that i wire in, with the signal/trigger wire from the original signal from factory wiring??

yes, try wiring it something like this

[vavJETTAw36]

Stock circuit isn't capable of delivering constant voltage?


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[axnjaksn]

yes, try wiring it something like this

Beautiful, thanks, last question, any particular relay you use??

[jballou]

Look at your primary O2 sensors when the car starts acting weird. If the 02's are going bad, the computer might be dumping in a ton of fuel...or leaning the car out. Bad o2's sometimes don't through CEL's.