Shorty Header / Tuning Question - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

rauhaus camaro · 11-14-2009, 12:05 AM

I recently installed a set of JBA Shorty Headers on my LS3. I was told by JBA that I have to disconnect my battery so the ECU will "relearn" the AFR and adjust accordingly. If I disconnect the battery, will I get a service error message and have to reset all my radio controls? Is there a way to shut down the ECU without disconnecting the battery to achieve the same purpose?

BLK2SS · 11-14-2009, 12:11 AM

Just disconnect the 2 black connectors from the pcm. It is by the radiator on the passenger side.

rauhaus camaro · 11-14-2009, 12:21 AM

Thanks. I'll check it out. FYI, I actually lost HP after installing the headers. JBA said it was because I did not disconnect the battery. They told me thatafter the system relearns that I should be picking up around 18 RWH without special tuning. Have you heard about this?

rauhaus camaro · 11-14-2009, 12:47 AM

The pcm appears to be directly below the fuse box. I see the two connectors. How do they uncouple? The is a black and a red flip of some sort on each one.

Treefrog · 11-14-2009, 04:50 AM

you might ck out the fuse pull fix for the L99s... should give you the same results.. theres a thread on it.. just pull the #5 and 20 i think.. but read first! 8)

http://www.camaro5.com/forums/showthread.php?t=38964

flht99b · 11-14-2009, 05:46 AM

I'd be interested in feedback on the JBA fit and finish, where you purchased them, etc. Ed M.

towmoe · 11-14-2009, 10:25 AM

Quote:

Originally Posted by rauhaus camaro

Thanks. I'll check it out. FYI, I actually lost HP after installing the headers. JBA said it was because I did not disconnect the battery. They told me thatafter the system relearns that I should be picking up around 18 RWH without special tuning. Have you heard about this?

Did you have a dyno done to determine the HP loss? If so, are you going to get another one to check the new results after the disconnect?

Quote:

Originally Posted by flht99b

I'd be interested in feedback on the JBA fit and finish, where you purchased them, etc. Ed M.

I would be interested in any feedback as well. I plan on getting shorty headers at some point and heard of DT, Borla and now JBA. Interested in the differences in HP gains and fit and finish between them.

rauhaus camaro · 11-15-2009, 01:19 AM

I did the initial dyno-pull to establish the first baseline so I could track the HP increases per each component I add. The first pull produced 372.29 RWHP with 376.23 RWT. That's about 427 HP off the flywheel. Right after the headers were installed it actually dropped about 6 RWHP and 2 RWT. This is due to not disconnecting the battery to allow the ECU to "relearn." It was also suprising to see how rich the bone stock engine is set from the factory. After the second pull, I called JBA and they told me to disconnect the battery, reconnect in about 10 minutes then run another dyno-pull after the ECU adjusts the AFR and timing. I am a bit reluctant to disconnect the battery away from the shop. I don't want to get stuck if any problems arise. I might just pull the #5 and #20 fuses or let the engine readjust itself over time. Dustin at JBA sent me 18 RWHP + 21 WRT gain results with their shorties on another LS3 that was installed after reset. Shawn at Superior Engineering stated that after he dyno-tuned his LS3 he produced an extra 20 RWHP without headers. Pretty incredible! Air/Fuel was improved tremendously. Hopefully I will able to achieve 400+ RWHP once the system recalibrates with the GMPP Tracker exhaust addded. The dyno-tune should push it well over 400 afterwards.

rauhaus camaro · 11-15-2009, 01:28 AM

Fit and finish on the JBA Shorties are excellent. I ordered them titanium ceramic coated. They look sweet! I'll keep you informed on the dyno-pulls and tuning.

- Rich

JANNETTYRACING · 11-15-2009, 11:22 AM

Quote:

Originally Posted by rauhaus camaro

I did the initial dyno-pull to establish the first baseline so I could track the HP increases per each component I add. The first pull produced 372.29 RWHP with 376.23 RWT. That's about 427 HP off the flywheel. Right after the headers were installed it actually dropped about 6 RWHP and 2 RWT. This is due to not disconnecting the battery to allow the ECU to "relearn." It was also suprising to see how rich the bone stock engine is set from the factory. After the second pull, I called JBA and they told me to disconnect the battery, reconnect in about 10 minutes then run another dyno-pull after the ECU adjusts the AFR and timing. I am a bit reluctant to disconnect the battery away from the shop. I don't want to get stuck if any problems arise. I might just pull the #5 and #20 fuses or let the engine readjust itself over time. Dustin at JBA sent me 18 RWHP + 21 WRT gain results with their shorties on another LS3 that was installed after reset. Shawn at Superior Engineering stated that after he dyno-tuned his LS3 he produced an extra 20 RWHP without headers. Pretty incredible! Air/Fuel was improved tremendously. Hopefully I will able to achieve 400+ RWHP once the system recalibrates with the GMPP Tracker exhaust addded. The dyno-tune should push it well over 400 afterwards.

What was They're Baseline numbers and after install numbers.

All LS3s I dynoed are 372-377 RWHP Bone Stock so

Yours are correct, they may be showing Lower baseline numbers and end up where you are now to show a gain.

I don't expect Shorties to do anything on this car, as the Cats are the Restriction not the Manifolds.

Ted.

rauhaus camaro · 11-15-2009, 01:37 PM

From the base dyno-pull, it did not appear that they were dyno-tuned from the factory. The power curve was somewhat erratic and the air-fuel was very rich. Mine was quite consistent with what I saw on two other bone stock Camaro LS3 engines which were dyno-pulled the same day. I saw another dyno of an LS3 with JBA shorty headers which after relearn gained 18 RWHP without dyno-tuning. Of course, my preference would be to go with long tube headers with either no cats or better cats, however I live out here in California where the CA Air Resouce Board prohibits these modifications.

towmoe · 11-15-2009, 04:53 PM

Quote:

Originally Posted by rauhaus camaro

I did the initial dyno-pull to establish the first baseline so I could track the HP increases per each component I add. The first pull produced 372.29 RWHP with 376.23 RWT. That's about 427 HP off the flywheel. Right after the headers were installed it actually dropped about 6 RWHP and 2 RWT. This is due to not disconnecting the battery to allow the ECU to "relearn." It was also suprising to see how rich the bone stock engine is set from the factory. After the second pull, I called JBA and they told me to disconnect the battery, reconnect in about 10 minutes then run another dyno-pull after the ECU adjusts the AFR and timing. I am a bit reluctant to disconnect the battery away from the shop. I don't want to get stuck if any problems arise. I might just pull the #5 and #20 fuses or let the engine readjust itself over time. Dustin at JBA sent me 18 RWHP + 21 WRT gain results with their shorties on another LS3 that was installed after reset. Shawn at Superior Engineering stated that after he dyno-tuned his LS3 he produced an extra 20 RWHP without headers. Pretty incredible! Air/Fuel was improved tremendously. Hopefully I will able to achieve 400+ RWHP once the system recalibrates with the GMPP Tracker exhaust addded. The dyno-tune should push it well over 400 afterwards.

Quote:

Originally Posted by rauhaus camaro

Fit and finish on the JBA Shorties are excellent. I ordered them titanium ceramic coated. They look sweet! I'll keep you informed on the dyno-pulls and tuning.

- Rich

Thanks a lot! I really look forward to hearing about the dyno-pulls with these shory headers.

JANNETTYRACING · 11-15-2009, 06:15 PM

Quote:

Originally Posted by rauhaus camaro

From the base dyno-pull, it did not appear that they were dyno-tuned from the factory. The power curve was somewhat erratic and the air-fuel was very rich. Mine was quite consistent with what I saw on two other bone stock Camaro LS3 engines which were dyno-pulled the same day. I saw another dyno of an LS3 with JBA shorty headers which after relearn gained 18 RWHP without dyno-tuning. Of course, my preference would be to go with long tube headers with either no cats or better cats, however I live out here in California where the CA Air Resouce Board prohibits these modifications.

That would mean you would have to show 390s RWHP after the install.

I understand, the Smog Cops can be a real Pain.

Ted.

g-townmach · 11-30-2009, 09:23 PM

So did the battery disconnect work???

11-14-2009, 12:05 AM	#1
rauhaus camaro SoCal C5 Family Member Drives: 2010 Black Camaro 2SS with LS3 Join Date: Oct 2009 Location: Lake Forest, CA Posts: 57	Shorty Header / Tuning Question I recently installed a set of JBA Shorty Headers on my LS3. I was told by JBA that I have to disconnect my battery so the ECU will "relearn" the AFR and adjust accordingly. If I disconnect the battery, will I get a service error message and have to reset all my radio controls? Is there a way to shut down the ECU without disconnecting the battery to achieve the same purpose?

11-30-2009, 09:23 PM	#14
g-townmach I FARTED Drives: 2010 2SS/RS Join Date: Nov 2009 Location: cen-tex Posts: 870	So did the battery disconnect work??? __________________

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11-14-2009, 12:11 AM	#2
BLK2SS Drives: Black 2SS Join Date: Oct 2009 Location: Westminster, MD Posts: 169	Just disconnect the 2 black connectors from the pcm. It is by the radiator on the passenger side.

11-14-2009, 12:21 AM	#3
rauhaus camaro SoCal C5 Family Member Drives: 2010 Black Camaro 2SS with LS3 Join Date: Oct 2009 Location: Lake Forest, CA Posts: 57	Thanks. I'll check it out. FYI, I actually lost HP after installing the headers. JBA said it was because I did not disconnect the battery. They told me thatafter the system relearns that I should be picking up around 18 RWH without special tuning. Have you heard about this?

11-14-2009, 12:47 AM	#4
rauhaus camaro SoCal C5 Family Member Drives: 2010 Black Camaro 2SS with LS3 Join Date: Oct 2009 Location: Lake Forest, CA Posts: 57	The pcm appears to be directly below the fuse box. I see the two connectors. How do they uncouple? The is a black and a red flip of some sort on each one.

11-14-2009, 04:50 AM	#5
Treefrog U235 is fun! Drives: CGM 2SS/M6 Join Date: Apr 2009 Location: Florence, AL Posts: 403	you might ck out the fuse pull fix for the L99s... should give you the same results.. theres a thread on it.. just pull the #5 and 20 i think.. but read first! 8) http://www.camaro5.com/forums/showthread.php?t=38964

11-14-2009, 05:46 AM	#6
flht99b Drives: 2010 Camaro 2SS/RS RJT Join Date: May 2009 Location: Knoxville Posts: 1,584 View My Garage	I'd be interested in feedback on the JBA fit and finish, where you purchased them, etc. Ed M.

11-15-2009, 01:19 AM	#8
rauhaus camaro SoCal C5 Family Member Drives: 2010 Black Camaro 2SS with LS3 Join Date: Oct 2009 Location: Lake Forest, CA Posts: 57	I did the initial dyno-pull to establish the first baseline so I could track the HP increases per each component I add. The first pull produced 372.29 RWHP with 376.23 RWT. That's about 427 HP off the flywheel. Right after the headers were installed it actually dropped about 6 RWHP and 2 RWT. This is due to not disconnecting the battery to allow the ECU to "relearn." It was also suprising to see how rich the bone stock engine is set from the factory. After the second pull, I called JBA and they told me to disconnect the battery, reconnect in about 10 minutes then run another dyno-pull after the ECU adjusts the AFR and timing. I am a bit reluctant to disconnect the battery away from the shop. I don't want to get stuck if any problems arise. I might just pull the #5 and #20 fuses or let the engine readjust itself over time. Dustin at JBA sent me 18 RWHP + 21 WRT gain results with their shorties on another LS3 that was installed after reset. Shawn at Superior Engineering stated that after he dyno-tuned his LS3 he produced an extra 20 RWHP without headers. Pretty incredible! Air/Fuel was improved tremendously. Hopefully I will able to achieve 400+ RWHP once the system recalibrates with the GMPP Tracker exhaust addded. The dyno-tune should push it well over 400 afterwards.

11-15-2009, 01:28 AM	#9
rauhaus camaro SoCal C5 Family Member Drives: 2010 Black Camaro 2SS with LS3 Join Date: Oct 2009 Location: Lake Forest, CA Posts: 57	Fit and finish on the JBA Shorties are excellent. I ordered them titanium ceramic coated. They look sweet! I'll keep you informed on the dyno-pulls and tuning. - Rich

11-15-2009, 01:37 PM	#11
rauhaus camaro SoCal C5 Family Member Drives: 2010 Black Camaro 2SS with LS3 Join Date: Oct 2009 Location: Lake Forest, CA Posts: 57	From the base dyno-pull, it did not appear that they were dyno-tuned from the factory. The power curve was somewhat erratic and the air-fuel was very rich. Mine was quite consistent with what I saw on two other bone stock Camaro LS3 engines which were dyno-pulled the same day. I saw another dyno of an LS3 with JBA shorty headers which after relearn gained 18 RWHP without dyno-tuning. Of course, my preference would be to go with long tube headers with either no cats or better cats, however I live out here in California where the CA Air Resouce Board prohibits these modifications.