difference between series 1 and series 2 rb25det ecu ?

Discuss the RB20, RB25 and RB26 series engines.
dethatch
Posts: 6
Joined: Tue Nov 24, 2009 9:54 am
Car: 1992 240 SX hatch

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I have a series 2 engine and possibly a series 1 ecu..how can you tell..I have heard the s1 has a light on it. and s2 does not. also heard you can run either on either engine...just want to make sure..I want the engine to run on its factory ecu before I plug in the power fc as to not cook the power fc in case something is wrong. much rather have all the bugs worjed out using the stock ecu before I do anything else


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as240
Posts: 40
Joined: Sat Dec 26, 2009 2:11 pm
Car: 1996 S14 SE
1992 HB Rb25
Location: Austin, Tx

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my series 2 ecu has a light on it as well.


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