Hello, I stumbled across this site searching for answers.. I saw someone who posted an issue similar to this in 2014, a fuel pump solved his issues. I believe mine is some other gremlin in the system. I have a 2005 Subaru WRX with an EJ257 IAG stage 2 block, FP blue turbo, 1100cc FIC injectors, AEM 340lph pump, and many more upgrades.. still stock fuel tree..
Car was professionally tuned by Calvin @ Dotson tuning.. she was tuned well and this issues are recent.. I have changed the MAP sensor with a 4bar COBB MAP which she was originally tuned on, the fuel pump is only a year or two old, and she is a weekend driver.. not many miles on the pump. Normal driving conditions she runs fine.. I can even get into throttle.. 80% and she pulls hard and accelerates.. tuned to produce 21psi of boost. Under WOT she stumbles pretty much the whole way up after 4k. If I stay in it, she gives me a flashing CEL which goes away after a few sec under normal driving. the data log reads 11.25 AFR after I've been in the throttle for less than a sec. at at 4500rpm..ish the most boost she gives me is 19.36.. of course I do not push her as she has a fit. I don't believe there is any boost/vacuum leaks. she runs e85 so the lines should be clean. I am open to any suggestions, comments, advice. Anything.
I sent a data log to a friend of mine that tinkers.. he has a program he placed the data log in and sent me this
drive.google.com
this is a link to a google drive that has the whole data log.. the actual pull is at cell 2230 (it opens for me in an EXCEL format)
THANK YOU SO MUCH!!
Car was professionally tuned by Calvin @ Dotson tuning.. she was tuned well and this issues are recent.. I have changed the MAP sensor with a 4bar COBB MAP which she was originally tuned on, the fuel pump is only a year or two old, and she is a weekend driver.. not many miles on the pump. Normal driving conditions she runs fine.. I can even get into throttle.. 80% and she pulls hard and accelerates.. tuned to produce 21psi of boost. Under WOT she stumbles pretty much the whole way up after 4k. If I stay in it, she gives me a flashing CEL which goes away after a few sec under normal driving. the data log reads 11.25 AFR after I've been in the throttle for less than a sec. at at 4500rpm..ish the most boost she gives me is 19.36.. of course I do not push her as she has a fit. I don't believe there is any boost/vacuum leaks. she runs e85 so the lines should be clean. I am open to any suggestions, comments, advice. Anything.
I sent a data log to a friend of mine that tinkers.. he has a program he placed the data log in and sent me this
datalog1.csv
drive.google.com
this is a link to a google drive that has the whole data log.. the actual pull is at cell 2230 (it opens for me in an EXCEL format)
THANK YOU SO MUCH!!
