no chip, apr r1 dv, k&n air filter nothing special. Is 13 lbs of boost normal?

 

does it just spike at 13 or does it hold at 13

 

it hits 13.3 pretty quick and then falls off to 10.4 and holds.
i think my front 02 sensor is bad, i have these codes
17522 - Oxygen (Lambda) Sensor: B1 S2: Internal Resistance too High
P1114 - 008 - Implausible Signal - Intermittent
16524 - Oxygen (Lambda) Sensor B1 S2: No Activity
P0140 - 004 - No Signal/Communication - Intermittent

 

your going to get codes relating to your 02 sensors when you have a test pipe. you remove the cat and your emissions systems goes nutty.

stock boost is like 8-9psi so with no flow restrictions it doesnt surprise me if it'd spike to 13 and taper down. But do some logging and make sure your not running lean or too rich. If your car is trying to pull fuel or dump extra in because it's 02 sensors are getting whacked readings you may cause yourself some issues.

and why bother with a test pipe if you don't even have a chip? go get chipped with a no-cat file and call it a day.

 

stock is 8-9 lbs so something is wrong... you need to get a APR 1+ with the test pipe file... this will allow the computer to expect the TP and the air flow...and

 

I just got this car for dirt cheap, my cat was rattling and deteriorated so instead of putting a new one on i put on a cheap ebay testpipe! its a temp fix, until i get a hfc and full milltech exhaust. I was trying to get rid of the engine codes before chipping it. APR next week.
I have been battling some epc woes, found the fix was a new rpm sensor on the tranny.
I got laid off and already have a new job, so that seveirance and sick time is going to good use once i get my first paycheck and things get back to normal



I dont want to anger the audi gods by doing things wrong.

 

[blockquote][blockquote][blockquote]ok i replace the o2 sensor, and back to normal. max of 10.4 lbeen lbs of boost holds at 9.8. I must have been running lean. I only drove 5 miles with the bad o2 sensor. i am getting apr chip tomrrow
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