i know this topic has been beaten to death. first off, i have been around the lnf since 08,as i owned 2 hhrss (traded one for my cobalt). when i had my hhrss,i had the same bolt on's as i do on my cobalt and then some. the only thing i have not experienced,was an intake,as there is none for the hhr. back in may,i purchased and installed a hahn cai. car ran fine. i'm not tuned as i wanted to upgrade my clutch first(i learned about that when i had my hhr lol). i live in texas near the coast(10miles north of galveston island) where in the summer,it's brutal heat. well sunday,we got our first cool front move through with no humidity and temps being in the mid to upper 60's at night. now, last night,i took the car out after i washed it and just cruising,without getting into it,i noticed my car felt...low on power. no cel at this time. got to wing stop and checked my piping etc...everything was nice and tight. i started the car and it started boosting again. well she was pulling hard loving the cool dense air and then i felt it loose power and the cel came on. went to oreily and scanned it and got the p0101. now, thought about it last night and the only thing that's different over the past 4months is the outside temps. the car have yet to see cooler air with the intake and is use to warm/hot air,till now. i'm not tuned. could it be because i'm not tuned for an cai, that when maf reads this cooler/ more dense air, it's throwing the maf off??? this morning i waited till it warmed up to about 78-80 degrees. drove the car on the hwy,around town, boosting and not boosting, quick burst and the car did not lose power or throw a code. what do ya'll think?? could i be right?

 

Do you have a way to check your fuel trims?

101 can be maf issues or boost leak I believe.

I know the stock tune does not add power with mods so maybe it's running out of it's set parameters and freaking out because of your bolt ons.

 

If you adjust the stock system you therefore adjust the stock settings. More air being pulley through then what it should can cause a p0101, but most of the time that code only comes up if a bad sensor, a boost or vacuum leak, or somthing hitting the maf. Not being tuned for the cai can cause a p0101 but is less likely. MOst common reasoning for this code is condensation/ or rain OR BOOST LEAK. When it rain air sucks in condensation which then hits the maf.

 

keep in mind these bolt on's been on the car since april and the cai been on since may. so if it was the bolt on's,it should have freaked out 4-5months ago. no bbost leaks. i know people give hahn flack over the ic welds cracking,but i have been having this ic since jan 09 with a trifecta tune boosting 25psi without fail. you don't think that it's putting the car into limp because of the drop in air temp?? because i just drove the car for 45 min with NO issues and it's warm outside.

 

well i did just had washed the car. when i usually wash my car,i let it sit or it goes in the garage for a few days. i can honestly say since having the cai, after washing the car, i have never driven the car right after. maybe this could have been the problem??? i have driven the car in the rain too and nothing never happend.

 

Well if a fiber breaks off the cai, or water comes through this will happen. So the water could have broekn apart the fiber and it finallt broke off to hit the maf!

 

well i checked where the filter is and under the car to look at the panels,there is no way water gotten in there. i drove in rain many of times with my car with the cai and no problems. gonna go drive it again to confirm the theory it needs to be tuned. right now, with temps in the low 80's, no problem. tonight i will take it out and see if it throws the code again. if it does, it's getting tuned this weekend!! lol. i guess my point of the thread was to see if this was possible. i'm ruling out the other stuff because the mods i have and the water thing would have happend within the last 4-5 months of them being on there. i won't throw out the idea of the maf just going bad. sensors go bad without warning.

the other thing is, why isn't it doing it now?? what's different from last night and now?? the air temps. nothing has ben touched or changed on the car...will keep ya'll updated!! oh sorry man, i get what you saying about the fiber too. it's just this intake is too new for it to be breaking off and this car is not driven everyday. probably 3 times a week.

 

Maf sensors are based off of a reference wire that is heated up and oncoming air cools it down and more. So if something hits that wire it skews it so that wire should have been burned off whatever touched it already if that's your issue

 

Sub'd

 

so if this wire has broken/burned off, will these issues continue?? or is the wire still there?? kinda confused as in i don't see a wire on the outside,so i'm assuming the wire sits inside the intake.

just to clarify. there is a wire on the maf that sits inside the intake. when someting hits this wire ot skews everything up. after clearing/erasing the code, all should be fine,until something else hits it??

 

Correct. The maf is the key point to look at. Clean it if at all possible

 

Tldr. Hahn CAI requires a K&N prefilter you will get condensation while parked. Forms on the MAF and the two MAP sensors.

 

wow,talk about what are the chances??? my wife and i used her car today (hhrss) to go get our children from school and babysitter and her car throws the same code . her car is BONE STOCK!!! so, i don't know...her car does have 93,7xx on it. so maybe it's time to replace the sensor on hers. weird...

 

Very possible that you got the filter wet and had some water messing with the MAF itself. Very common issue with the AEM and HAHN CAI. I know you said you checked the filter and what not but anything is possible man. Good luck!

 

LNF Guru? Wheres Cobe?






lol




Is a po101 normally the code people get when they do not align the filter correctly?

 

nah, its when the MAF isnt performing to its spec. Im guessing its double checked by the MAP sensors because you can get the same code with a boost leak or rather the MAP sensors say one thing and the MAF says another so they dont add up and you get that code.

cracked intercooler? lollol.

 

You are laughing but that's a possiblity.

Temperature change plus lots of boost could do the trick to crack that bitch.

 

Listen to this man. It's condensation.

 

Lmfao I already said that and he gets the credit. Wow CSS turned to poopy lmfao

 

Sorry, James. I didn't read the whole thing. You get 3/4 of the cookie.

 

Snicker doodle? If so I'm game...

 

Sorry, I only have chocolate-chip.

 

F**k.. You sir can suck on your toes haha