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Caughing and Sputtering on light acceleration on new tune

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Old 01-05-2012, 10:03 PM
  #1  
jobeonnet
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Default Caughing and Sputtering on light acceleration on new tune

I just finished an auto to manual swap and i am now having troubles with what appears to be the tune, on soft acceleration when cold it coaghs and sputters with a very lean AF and clears up a little when it warms up and almost quits when completly heat soaked.
I have an M90 Blower, cams, LTs and steeda CAI, The boys in indiana have built me 5 tunes so far and they all seem to be about the same.
The car ran perfectly on its previous tune.

Any Ideas??

i changed wire harness and computer so it should tune just as a standard.
Ive checked wire harness, injectors, intake leaks and it hasnt thrown any codes as of yet.
Im stumped and it appears they are too but they havent given up yet.

Thanks
Kirk
Video included

http://s1025.photobucket.com/albums/...t=DSCN0124.mp4
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Old 01-06-2012, 09:37 AM
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hammeron
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Originally Posted by jobeonnet

The car ran perfectly on its previous tune.

Any Ideas??

Ive checked wire harness

i see you checked the harness, did that include making sure the front
oxygen sensors are plugged into the correct (left side/right side) connectors?.
i have read about this happening to folks, so although a long shot it's all i got right now.

good luck and i hope you get it sorted out
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Old 01-06-2012, 05:59 PM
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jobeonnet
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Thanks Hammeron, i did check those
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Old 01-06-2012, 11:50 PM
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tx_zstang
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Find out how they created the tune. If they created a new one for the manual pcm, they probably left something out.
Get it resolved before pushing it.
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Old 01-07-2012, 08:39 AM
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jobeonnet
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Originally Posted by tx_zstang
Find out how they created the tune. If they created a new one for the manual pcm, they probably left something out.
Get it resolved before pushing it.
They said they have used tunes from identical cars they have had on there dyno and just adapted it to my car.

I have data loged it several times and at WOT and everything looks good.

Thanks

Kirk
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Old 01-08-2012, 10:09 AM
  #6  
Simon1
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They need to data log it when it is cold. When it is idleing, starting to warm up and driving normal. Most timers can figure out the WOT and make the car make good power. The good tuners can make the cars drive good.
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