Well I traded my integra for this last night and i drove it all day and used 3/4 my tank. No problems at all the whole day till this.

I went and picked my little sister up from her soccer game and I was sitting there waiting and left it running for a good 3 or 4 minutes, i revved up after she got in and my A/F ratio went from a normal 12 or 13 to 17, 18, 19.

So I hurried up and drove home which was only a mile down the highway. I got home fine let it cool down for a good 2 hours. I started it up and it idled a little funny like it was missing and the r/f was at like 14 15 and i revved it up and it went to 18 then 19 then 20 and then it died and it read LEAN.

Right now its dark and I have no light to use so in the morning im gonna check the fuel pressure and the spark plugs and see if they are good then go from there.

This is my first turbo car and dont really have a whole lot of experience with forced induction. Im learning as I go.

I ******* love boost

AEM fuel rail
550 cc rc injectors
255 lph fuel pump

 

maybe cracks on downpipe before o2 sensor?

 

It needs to be tuned more . The intake temp corrections are not adjusted properly and as the temp rises its taking out fuel instead of adding or stayin he same

 

I changed plugs this morning, didnt bother starting it and seeing if it was fine which was stupid. Car ran fine for a good hour and then it started to do it again. I'm seeting an appointment with a tuner here soon

 

Check all pipings and bolts, make sure there aren't any leaks. My a/f leaned out when my wastegate bolts came off.

 

dizzy is my guess

 

either this or your IAT sensor took a ****

 

I have No CEL but its still doing it after I replaced the plugs AGAIN with .35 gap (Is that too much?)

 

are you using cold apark plugs?

 

You are judging your air fuel ratios with no load on the engine.

You should be running a 7 or 8 heat range plug gapped to around .028

Recommended Target Air Fuel Ratios On 91-93 Octane Vehicles:
Forced Induction Vehicles: 11.2-12.0:1 (Full Throttle)
Partial Throttle/Idle: 15.5:1 (Light Throttle) 14.7-13.6:1 (Partial to Mid Throttle)
There are many small variables involved in targeting your air/fuel ratios, the main idea is to ensure you are not running too rich or lean & making the safest & best power possible due to maintaining a proper amount of fuel to your motor at all times.