Eratic Boost after sensor replacement

[Turbo gI]

So i recently had to change my Maf, my upstream 02/wide-band and oil pressure sensor. I was running the Cobb OTS stage 2 91 map. I was averaging 17-18 PSI peak boost. Since the sensor change I average 15.4-16.8 PSI with an occasional 18. I have remapped twice but I haven't seen a difference. I contacted Cobb and they said that 16ish is average for the stage 2 map, witch I would believe if I wasn't able to hit the PSI I was hitting before. I have checked for boost leaks but have found none and do occasionally hit 18 PSI.

Is there a procedure for reprogramming my MAF or wide-band o2? I understand that the OTS maps aren't the best but again was hitting above 17 PSI all the time and now 1 out of 5 pulls I may peak over 17.

Any ideas would be helpful.

[sheston]

Best thing to do would be to post some WOT logs. Hard to troubleshoot anything with just words :-)

[kmac]

Where did u get the meter ans rest of parts from

[Turbo gI]

I will work on getting the WOT logs.
All parts came from Mazda except for the 02/wide band. I believe that came from aftermarket. All this work was done at a shop as I didn't have time to look into it myself when it stopped running.

Long story but this all started when I backed up over a chunk of Ice and shoved my DP forward and broke 2 studs off the turbo. Had that repaired and that's when the car stopped running on the way home and threw Maf code. Shop said the 02/wide-band fire got snagged and shorted that out and supposedly shorted my Maf and oil pressure sensor.......

Anywho, I can find out what aftermarket place they got it from. Is there a way they got the incorrect sensor that will still allow the car to run and not throw codes?

Thanks again for the responses and no flaming as I am a bit new to doing logs and such.

[Vansquish]

Do you actually mean the MAF sensor, or are you talking about the "MAP" sensor?

[Turbo gI]

Mass air flow sensor was replaced. I have not replace the MAP sensor yet.

[kmac]

O2 can't short out maf units, vref ckts should be independent of each other as of 2006 I think and Mazda maf ckts don't have a standard 5v ckt it reduces 12v in meter if I remember correctly. So I call shananagans