Looking for some tuning help on a couple things. I used to have a tuning friend local to help but has moved away. Now I am starting fresh with little knowledge of hondata s300 tuning

To start off I have a 2000 civic that was previously running a b20b, pretty simple swap. I installed a rywire obd1 conversion harness to run obd1 ecu, alt, dist, and injectors. I have recently sold this swap and have bought an obd2 b18c1 gsr swap with an s300 unit that was tuned with all obd2 electronics. I will be doing the same obd1 swap with the ecu, alt, dist, and injectors so that all is plug and play no jumper or adapter harnesses. In doing this will the s300 need to be re-tuned or current file modified to recognize obd1 functions that are different. The things I see that will be different on my harness are no vtec oil pressure switch or crankshaft position sensor.

My other concern is I bought a skunk2 TB off a friend that has a 4bar map sensor on it. Will it be as simple as just selecting a different map on current file on s300 or will it need tuned again

Any and all help is greatly appreciated. It has been difficult to find a similar scenario on HT forums to refer to.

 

First, dont use the 4 bar map for stock B18c1 , find/buy oem style map sensor and what size is Throttle body, might be easier to start the swap with your current TB , having to big of TB will require thorottle input tuning which can be tricky if first time playing with software.

2nd , you will need a obd2 to obd1 ecu adapter still and run the obd1 ecu. I think you got this part.

For map, you will need to select a b18c map, make sure the Vtec output is wired and your distributor/injectors/alternator are all happy ( nothing to change in ECU ) . ( in hondata you can turn off the oil pressure switch ) .