Originally Posted by Tee-Dub
Not true, the JB4 just auto-clears any codes that come up. BMS does sell an O2 simulator that you can use to fool the ecu (and any OBDII tests) into thinking everything is ok and you can use it with the JB4.
"The JB4 tuning system includes this functionality built in so a DPFIX is not required if you are already running a JB4 Performance Tuner!"
Taken from their site...
Old| 2005 s2000: KPRO, Invidia q300 v4, PLM header, BERK 70mm HFC, Vortech v2 (3.6" Reichard Pulley), FMIC, ID 725cc (397whp/243tq @9psi, Tuned at Innovative Motorworks.
New| 2008 135i: JB4, ER CP, TiAL Q, BMS OCC, BMS DCI, Active Autowerke 2.0 Sport FMIC, VRSF 3" DPs, CP-E Axleback, Robs' PCV. Coming Soon: AMS FMIC, welded 3" cold piping