SR20DET - Running Rich - Additional Suggestions Needed

[voiddweller]

Hi,

I recently finished a SR Blacktop swap with my S13. The engine running extremely rich (less than 10:1 for most of the power band) and a 1200-1500RPM idle.

After doing some searching, a few things came up, so I checked the coolant temp sensor, MAF, TPS, 02, the harness (for continuity) and all the vacuum lines. I cleaned the MAF and readjusted the TPS. From what I read in the S14FSM, they all seem within spec. The ECU is an E5 and does not appear to be modified.

The best run was with unmetered air coming in after the MAF.

The only mods on the car are an 11lb flywheel, FMIC and turbo back exhaust with test pipe.

Any suggestions would be greatly appreciated.

Thanks!

Dyno run results:

[xpicer]

you should double check on the coolant sensor

[IanS]

is it an S13 blacktop or is it a notchtop, both have black valve covers