I gota bone stock 2009 vic red ss/tc 14k and installed the badmab catless down pipe, and few days later threw the expected cel. now the only thing odd is the car wont boost up to the stock 13psi it only wants to boost to 6 maybe 7psi and no higher. help? opinions ?

thanks,

Bryan

 

check the CEL to see exactly what error it is. Don't assume its the expected error cel. Maybe theres an exhaust leak? or a leak in the IC (cracked end tank), loose boost tube? Check the cel and see what it says.

 

what cel did it throw? ive had my megan on over a month and havent had any cels yet

 

did you buy a defouler?

 

i will check the code tomorrow i cant find my reader as of tonight, or ill stop by autozone and post it up asap and yes i got the defouler but couldn't get it to fit right rubbing issue

 

ok ya update us tomorrow

 

Mine was tight also, i just took a hammer and screw driver and modified the heat shield until it fit. still against heat shield but does not vibrate

 

did your car boost low? without the trifecta tune?

 

No i did not. stock it boosted 15 psi and then with dp like 13. You very well might have something else going on besides this. From what I have heard boosting at 6psi is the ecu going into limp mode due to various reasons, hard to speculate until you find out what the code is.

 

In for results.

 

I'm no expert but it might be because you're running on a stock tune??

 

Usually the code associated with the dp won't cause limp mode... Mine didn't. It could be something completely unrelated.

 

ya exactly....

 

Nothing is wrong with your car...

Learn-Down!

I just looked at your location it's approx 0c... + you just added in a downpipe.. which is suppose to make a decent amount of hp

It sounds to me like it's just learn down in action...

Colder Air = More Power = Learn Down = Less Boost
Catless Downpipe = More Power = Learn Down = Less Boost

But still check the cel...

Edit: Stock you should be able to boost alot higher than 13psi.. "did you just get this car in the colder months"

 

could be because of the weather too. My car seems to boost slightly lower then 13. It kinda happened when i put my catless on too.

 

hey guys i got the code this morning found the code reader and here it is

P2187 "system too lean at idle speed" (bank1) <---only code that came up

DTC

catalyst mon - inc
evap system - inc
oxygen sensor- mon inc

like i said its really cold here in pittsburgh, i got the car back in october during 40 55 degree weather and it normally boosted like 13 14 psi maybe it is the cold weather. the car picks up good but just wont boost any higher that 6psi

thanks

 

evap shouldnt be coming up...

you should only be getting a catalyst efficiency code

disconnect your battery for 20 mins then try again, should learn it... you may have jut thrown the fuel trims off a bit

 

You have a leak somewhere. 2187 lean off idle normally means a vac/boost leak.

 

ok and how do i go about fixing this

 

get a can or carb/throttle cleaner, spray around hoses and connections, when rpms go up... you have found your leak

 

did you tighten DP bolts to the right torq specs? what about the o2 sensor?

 

yes they are tightened no cracks or leaks that i can see i checked the hoses.

i noticed when i opened the hood the dipstick wasn't seated in and was sticking out a few inches

didnt do any thing different still low boost and the gaskets are like new

 

well as of now went to apple bees with the gf and it boosted like crazy up to 15psi like it should , the only thing i checked was the dipstick it was sticking out an inch or so also had the battery unplugged for a while

 

You just reset the ECU and it hasn't had a chance to learn down yet. Good to hear that it's working normal again.

 

sounds like learn down may be a factor here, get a tune.