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Discussion Starter · #1 · (Edited)
well i bought obd1 injectors and i need to change the lower intake runners so they would fit, im looking at the obd1 and 2 lower intake runners and there almost the same, but the obd2 runners have a line coming from it. what would i do if im getting rid of the obd2 runners that have this and changing to obd1 runners that dont.


heres a pic hopefully of the obd2 runners with the thing i was talking about. what is it and is it needed...?



heres the obd1 runners that dont have em.


what should i do.
 

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That is a vacuum line for the air assist system which is present on OBDII and OBDI cali spec cars.
 
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