Mazda 323,Mazda 626 & Mazda 929 Whether the compact 323, the mid sized 626, or the full sized 929, these vehicles remain very popular even though production has stopped.

323 BJ 1.8L Fuel Injector/Intake upgrade

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Old Aug 26, 2025 | 04:42 AM
  #1  
Uneven.Evan's Avatar
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From: Brisbane
Default 323 BJ 1.8L Fuel Injector/Intake upgrade

Hi!
I've got a 323 BJ 1.8L FP engine, and was wondering if the intake manifold and fuel injectors from the 2.0L SP20 BJ would fit on mine.

If not, any suggestions on aftermarket gear to put on!

Cheers!
 
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Old Aug 26, 2025 | 09:53 AM
  #2  
Callisto's Avatar
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From: Northern California
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Not sure that would be an upgrade? What leads you to believe this? If it is the larger BIGGER is better principle, then you should learn more about your current engine CFM rating.

As far as fitment you would need to compare several things the main one is the head mounting and intake port configurations.
 
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