09 SS auto Having intermittent boost issues I’m bone stock with exception of an intercooler. Maf is new and was installed very carefully...I’ve had it about 2 months, bought it with 137,800 miles on it so I’m aware there are a few things that need to be addressed but I just want to get it running right. It’ll boost between 1-3 pounds most of the time but when it’s running right it’ll do between 10-12 and up to 15 right before it shifts...the last month or so when I first start it in the morning to go to work I have to gas it up to 1.5-2 rpms for about 2 mins to keep it running but after that it runs strong the rest of the day even after turning it off(minus the boost issue) I’m located in south Louisiana it is HOT AND HUMID. I have checked the clamps on the intercooler they are tight. So I’m hoping these two issues are related so that I can kill two birds with one stone but If not I’m willing to put in the work. I need to check the map connections I just don’t know where either of them are located and I haven’t been able to get any info on that while searching. Here are the codes it’s throwing p0302 (cylinder 2 misfire detected), p2178 (system too rich off idle bank), p0102(mass or volume airflow A circuit low), p0101( mass or volume A circuit range/performance)...brand new oem iridium plugs Thanks in advance guys

 

Chase down the first code

https://www.obd-codes.com/p0302

check coil connections.
did you attempt to gap the plugs, the whiskers are easy to break

 

The guy I bought It from installed the plugs so I couldn’t tell you if he tried to gap them or not.

 

I guess you're looking for the Tmap sensors since you have a boost issue ? Anyway. See the pics below. Your's won't have the blue Bosch sticker one's if your's are stock.
Also. Isn't this the car you were having numerous other problems with ? Seem to recall a Launch Control problem. But you never came back and updated that thread.

Top Tmap sensor: (red circle)


Bottom Tmap sensor. (red circle. can be seen from the top. But any work, you need to go from the bottom)

 

The TMAP is down by the AC kind of hidden.

You have the DTC definitions a bit wrong
P0103 MAF sensor circuit high frequency
P0102 MAF sensor performance

What is odd is that P0103 inhibits the P0101 test. I am guessing that you are not distinguishing between history, current and pending codes.

P0101 means something is leaking as does P2178.
P0101 test:


In other words: it compares the MAF to the MAP. One of them is wrong.

 

Except for the P0302, the other 3 codes point to the MAF sensor. Is the connector plugged back in? Might have a defective MAF sensor. Have you pulled the codes since you replaced the MAF sensor?

Not sure why you're thinking about the MAP sensors, unless you think there may be a boost leak at one or both.

 

I’m sorry guys I’m really new to this...I forgot to update the other thread I got all of that resolved by changing all the hubs...the lady that owned it before my ran up on a curb and ripped a few connections up and one of the male plugs was totally ripped off of the hub pigtail so I got all of that fixed and she was doing okay for a month and now this

 

 

Yes those codes were pulled after the new maf was installed

 

Are you using the stock air filter and housing ? Some other owners have tried aftermarket air cleaner parts then experienced CEL codes that popped up.
The SS is very finicky when it comes to the air intake system.