2G Limp mode in boost

[pottersgst]

ok so I drove my gsx yesterday, perfectly normal day boost is about 11-12 lbs on a t25. Parked the car for the night started today and did this for a log, sounded fine normal warm up got in drove down the road fine out of boost. went to go from stop sign hit boost and felt like I hit a wall. still spools bov sound still there just wideband hits 10 pure rich like im not getting air but out of boost car runs fine put the car in park revs normal hits boost still fine so seems only under load. no obvious boost leaks, though I will be doing BLT when done typping. like I said car ran fine parked it and next morning this crap. I did take a log in ecm link but cant call myself a tuner I have not done a lot with the system since install just got it to make car run again. only questionable thing has done in past couple weeks is occasionally will start throwing knock while cruising around 50-60 get out of the throttle get back in it usually stops and fine again. also doesn't happen everyday and my wideband still reads 14.6 while its knocking im assuming its phantom knock but I looked at sensor no goo pouring out yet but im hoping someone can look at file and see the timing jumps it makes an say yes that's ur issue, or atleast a sensor in general as that seems the more likely scenario. Its a pretty stock 95 gsx, evap deleted correctly R&d Thermal exhaust no cat, turboxs bov some piping stock side mount, aluminum intake K&N filter, plx wideband and ecmlink, and fuel pressure at idle is 42 1/2 anything else just ask profile is pretty up to date

 

[Vegas Smith]

My best guess is you have an intermittent wiring issue with your wideband. You are simulating your narrowband, and when the wideband messes up, the car stumbles because there is no narrowband or wideband to run the car.

 

[pottersgst]

Ok yes I'm simulating narrowband with ECMlink not off the wideband unit itself as i can do if needed, and I do have the factory o2 sensor in my pile of parts so maybe I will try and go back to stock sensor if I cant find obvious problem with my unit. I wonder if it's time to replace my wideband sensor and that could be issue as well as it's about 2 years old now

 

[Vegas Smith]

It can't hurt to convert it back to stock o2 if you can't find any obvious wiring issues. When you see a wideband reading 10.0 flat an period of time then that leads me to believe there is a problem with it.

 

[pottersgst]

Well found the issue turned out just to be a slice in a coupler and when I did BLT I found it after it hit .5 bar anything over that was just pouring out the hole explains why my wideband was going super rich...did pull the wideband first an replaced with stock o2 and changed nothing but the sensor is burnt so guess I'm replacing that too but replaced coupler and back to 12lbs running again thanks for the help but guess shoulda known by know to check for leaks first