CEL After Headers - MustangForums.com

Go Back   MustangForums.com > Vendors & Sponsors > AmericanMuscle.com

AmericanMuscle.com Premier store carries over 1000 Mustang parts and accessories. Features the largest mustang wheel selection available and offers free mount and balance with tire purchases. Committed to expert customer support, great prices and fast, free shipping!

CEL After Headers

Thread Tools Search this Thread
Old 05-20-2013, 12:50 AM   #1
1st Gear Member
Join Date: Apr 2012
Vehicle: 2012 Mustang
Location: Washington
Posts: 81
Default CEL After Headers

Hey AM,

I got the BBK headers and the Catted X Pipe from you like 2 months ago, It was installed at a local shop that has a pretty good reputation. Last week suddenly I got a CEL, I took my car to the dealership to have it scanned and the told me that the error codes were p219b and p0300 and they were due to the headers and there was nothing they could do and they the told me that a tune might be necessary. So finally I decided to get a Tuner, but my question is, will the Tune Fix the issue with the O2 sensor getting an imbalance in the A/F ratio? If so, I will order the Tuner and the Intake from you guys.

gus_vb is offline   Reply With Quote
Old 05-20-2013, 12:48 PM   #2
Platinum Sponsor
AMWill's Avatar
Join Date: Feb 2012
Vehicle: '14 GT
Location: Pennsylvania
Posts: 1,629
americanmusclefb americanmuscle


Even using the stock tune, there shouldn't be an Air/Fuel imbalance after installing headers. This code is most likely thrown from an exhaust leak somewhere between the header and cylinder head or header and Xpipe connection. If there's even a small leak at these points, you'll get this code. Also, a p0300 is from a random misfire. This again can be cause from an Air or Exhaust leak.

I would have the exhaust double checked for leaks before doing anything. Purchasing a Bama tune will NOT fix this issue, since it's a mechanical problem.

Again, have a shop smoke test the engine and exhaust. There's most likely a leak somewhere!

Will Levantovsky | AmericanMuscle.com
Toll Free: 866.727.1266
Bama Hotline: 888.226.9764 | M-F 9AM-5:30PM EST
Free Same-Day Shipping!
AMWill is offline   Reply With Quote
Old 05-20-2013, 07:28 PM   #3
1st Gear Member
Join Date: Apr 2012
Vehicle: 2012 Mustang
Location: Washington
Posts: 81

Thanks Shane, I ll have the car checked and then I ll order the tuner.
gus_vb is offline   Reply With Quote


Similar Threads
Thread Thread Starter Forum Replies Last Post
4 Valve Head questions GimpyHSHS 4.6L (1996-2004 Modular) Mustang 6 10-01-2015 09:01 AM
Centerforce Clutch, will a exedy flywheel work? junior04 4.6L (1996-2004 Modular) Mustang 1 09-28-2015 10:53 AM
new 15 GT premium, HEADER ADVICE, DFW? Roxon68 The New S550 2015-2016 Mustang 11 09-21-2015 02:33 PM
O/R H pipe install car is now stalling when coming to a stop trashxtrash 4.6L (1996-2004 Modular) Mustang 4 09-20-2015 10:49 PM
S550 header question BrantleyS550 The New S550 2015-2016 Mustang 0 09-14-2015 04:18 PM

bama, bbk headers, tune

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -5. The time now is 04:27 PM.

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company