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Need help - PFC switching 1300s to stock 850s?

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Old 12-20-23, 02:50 PM
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needs more track time

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Question Need help - PFC switching 1300s to stock 850s?

So I replaced my old 1300cc secondary injectors with some minty fresh stock 850s. Mostly for smog but also because the 1300s were leaking after the car sat for a couple of years unused.
Will the tune safely work if I were to revise the injector config to 850cc? Or do I need a full on retune?
Retune is scheduled for end of January. I'd like to drive sooner if it is safe.
Thanks.
Old 12-20-23, 03:55 PM
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Use the PFC Commander to change the injector size. You will need the DATALOGIT hardware/software if the lag values were changed when the 1300s were installed.
Retune the map. OR: If your engine is stock, reload the stock map.

If you do not know how to do this, find a PFC tuner.

This should have been posted in the Power FC forum.

Last edited by cewrx7r1; 12-20-23 at 03:57 PM.
Old 12-21-23, 09:31 AM
  #3  
needs more track time

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Thanks, Chuck. Had forgotten about the lag settings. It has been 10+ years since I looked at your notes or touched any PFC settings.

What should the lag settings be for stock 850cc secondaries?
Old 12-21-23, 01:20 PM
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Old 12-21-23, 07:42 PM
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Here is Settings 5 for stock map
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File Type: pdf
Stock Injectors.pdf (141.1 KB, 32 views)
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