F20b blue top ecu ?

[buckweet5200]

what the best ecu to use with a F20B 5mt a p13 or a p30 and whats the difference?.

[Spunkster]

To use a Hondata system, you will need to use a compatible OBD1 ecu from the list at http://www.hondata.com/ecus.html. You can then use the Hondata s100 or s300 depending on what options you want (http://www.hondata.com/sproducts.html). I would recommend the s300.