Si Vs Non Si oem airbox

[Hondanickx]

If I am not mistaken:
If you are adjusting your air “volume”, then you may not wish to run the CAN tunes. You would in essence run a little richer than within the set AFR perameters For your particular model/make.

I'm not tuned for the moment , did the logging with the Torque app .I'm sure the oem ecu can regulate up to a certain amount .
The Euro spec ecu's all run stock really rich -6 -7 LTFT.
The PRL Street intake can also be run untuned and has almost the same MAF dimensions as the oem SI MAF housing.

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[Animefreak1983]

Was wondering about this for a while. Very cool! Looks a little more work than i could do. But still cool