switch from 2b to s200, now solid CEL

[drifter57]

After driving on the 2b with no problems for 5 months, I decided to upgrade to the s200...

I had my existing fuel maps reflashed with updated software (was done on a new chip i rec'd from hondata), but once installed I got a CEL. I tried reading the code, but jumping the OBD2 hookup didn't work. Any thoughts? As far as I can tell though, the car drives fine, the s200 lights up red accordingly.

Here's my setup:

99 civic si
JRSC @ 6 psi
AEM CAI
DSM 450cc injectors + resistor pack
upgraded fuel pump
Hondata s200 w/boost
p28 ecu

My setup was dyno'd at Church Automotive in Torrance. I plan to go back to see if Sean can help, but was wondering if you guys have had similar problems.

[turbosi92]

After driving on the 2b with no problems for 5 months, I decided to upgrade to the s200...

I had my existing fuel maps reflashed with updated software (was done on a new chip i rec'd from hondata), but once installed I got a CEL. I tried reading the code, but jumping the OBD2 hookup didn't work. Any thoughts? As far as I can tell though, the car drives fine, the s200 lights up red accordingly.

Here's my setup:

99 civic si
JRSC @ 6 psi
AEM CAI
DSM 450cc injectors + resistor pack
upgraded fuel pump
Hondata s200 w/boost
p28 ecu

My setup was dyno'd at Church Automotive in Torrance. I plan to go back to see if Sean can help, but was wondering if you guys have had similar problems.

I had the same problem and it ended up being I was trying to use the 2.5 version ROM on the S200. It didn't like it very much. I bet it is something simple like that.

[drifter57]

cool i'll ask shawn about the software he used to update

[QUICKSILVER RACING]

Also check if you removed J12. If it is still there it will cause communication problems between the ECU and Int BOX.

[drifter57]

Shawn figured out the problem. the s200 was looking for a knock sensor and there was none... easy fix this time...