Ok to run with JBA shorty headers with no tune?

[us1champ]

i have read alot of people use 1/4 drive stuff? looks pretty darn tight

[dark side]

JBA install...my reveiw

Here is a thread of when I did mine way back.....

[Tofnbad]

I used a combo of 1/4 and 3/8 drive plus ratcheting wrenches help a lot.


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[09R/TPony]

Originally Posted by odog422

I've got a 2012 RT 5.7L six speed and want to add some JBA shorty headers. I live in MD with strict emissions so the shortys seem like the obvious choice. My real question is this: I used to have a Durango that I put shortys on and seemed I got a little more response and definitely a deeper rumble in the exhaust note, and this was without a tune. I've been reading here tunes for headers are a no go yet for the '12's, and obviously performance expectations are different than from the truck, but I thought with this bolt on, you can roll as is and be fine. My concern is I've been reading here about people talking about running lean and needing to "add fuel?"

Any insight/comments/recommendations much appreciated.

Installed the the JBA shorty headers and drove the car for 3 months with no issues before installing a Predator custom tune.Just let the car sit and idle for about 15 minutes after installation to let the ECU adjust to the changes then drive it for another 20 minutes at city speeds before mashing the pedal.I noticed a definate improvement in sound with more of a rumble to the exhaust note.

I would advise not to use the gaskets that come with the headers but to buy a new set of the Hemi 5.7L ones that have the flange to protect the valve cover gaskets from heat damage.Also,make sure the alternator cable isn't running too close to the header on the passenger side of the engine.My car is a 2009 and I had to lift the cable away from the header using a heavy duty black nylon tie and then fasten the tie to the wire harness going to the fuse box.See pics below.The video is of my car which will give you a good idea of the sound with the JBA's.

Best price I've seen is $505/pair athttp://buyjba.com/catalog/advanced_search_result.php?keywords=1964

The following link will show pictures of the install of JBA shorty headers.
JBA pix Photos by CenlaBlooz | Photobucket

CORSA Xtreme Cat-Back Exhaust - YouTube

CORSA Xtreme Cat-Back Exhaust - YouTube

[MarylandSpeed]

You should be fine without a tune. Especially with the stock cats. If you have any questions, give us a call!

[Challenger370]

Originally Posted by odog422

I've got a 2012 RT 5.7L six speed and want to add some JBA shorty headers. I live in MD with strict emissions so the shortys seem like the obvious choice. My real question is this: I used to have a Durango that I put shortys on and seemed I got a little more response and definitely a deeper rumble in the exhaust note, and this was without a tune. I've been reading here tunes for headers are a no go yet for the '12's, and obviously performance expectations are different than from the truck, but I thought with this bolt on, you can roll as is and be fine. My concern is I've been reading here about people talking about running lean and needing to "add fuel?"

Any insight/comments/recommendations much appreciated.

An R/T with the stock Dodge tune and jba headers your a/f ratio is that of the DiabloSport tunes, so yes.
If you load the DiabloSport tunes you will need to add 3-5% fuel in all rpm ranges.

Yes people run it without tuning, but your a/f ratio is lean and that's not safe.

I have a wideband O2 and measure the a/f ratio, and I have the dyno sheet from DiabloSport where they tuned the car, this is how I know these numbers.