Car dying at idle

[Loudmouth1o]

I got the car dyno'd last week at Blow by Racing's dyno day, Car was completely stock and then Chris ended up throwing on a tune and my JLT intake I had in the trunk. Car dyno'd perfect at 396whp and 384 torq. Though im guessing it may be from the tuning but when the car is at idle the RPM's tent to drop to around 400, then shoot up to maybe 900-1k and then go back down and the car will stall out. I called BBR and they said to check the vacuum lines in which I did and still stalling out. They also told me to put around 250 miles on the car/tune and well now I believe im at 325ish and car just died in my driveway.

Any other reason the car would be dying on me?

 

[302]

Your owners manual has something about that. Everytime you take off the battery terminal or retune it you have to let the car relearn the idle.

 

[JD's04]

Go back to BBR and have them look at it.

 

[b00stedgt]

Tune issue

 

[BAKnBLK2010]

When you load a new tune you need to let the car idle for 5 minutes with the a/c off then turn the a/c on and let the car idle for 5 more minutes. If you didn't do this it takes a lot longer for the computer to relearn the idle stratagies. I would reload your BBR tune and then do the above procedure and your problem should go away.

 

[blk5.0]

that did the same thing with my Lund tune. they thought it was a vacuum leak as well we double checked that then re installed the tune and so far its good.

 

[Digital_Synapse]

When you load a new tune you need to let the car idle for 5 minutes with the a/c off then turn the a/c on and let the car idle for 5 more minutes. If you didn't do this it takes a lot longer for the computer to relearn the idle stratagies. I would reload your BBR tune and then do the above procedure and your problem should go away.

THIS, and your issue should be resolved.