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CEL after intake manifold swap?

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Old 09-22-2010, 09:04 AM
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Default CEL after intake manifold swap?
We have a 2000 vette with LS1, My buddy replaced his stock intake maniflod with a BBK unit and now he has p0171 and p0174 which are bank 1 and bank 2 lean conditions. He has a graniteli MAF so we swaped back to the stock one and the codes came back. Do you need a tune for this thing now? He also has a BBK 80mm throttle body and SLP blackwing intake. How do we get rid of these codes, we are lost!
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Old 09-27-2010, 02:43 PM
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Anyone? We can't seem to figure this out! Please help.
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Old 09-27-2010, 03:02 PM
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Both banks all the sudden throw lean codes, could be a vacuum leak.
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Old 09-28-2010, 07:56 AM
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Yep, I will check for vacuum leaks.
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