DT125 Posted October 8, 2015 Share Posted October 8, 2015 I just fitted a new wideband kit and on boost the ratio is 11.1 to sometimes drops to 10.4 . Does anyone know if this is normal ? Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted October 8, 2015 Share Posted October 8, 2015 Perfectly normal for the std ECU. Link to comment Share on other sites More sharing options...
DT125 Posted October 8, 2015 Author Share Posted October 8, 2015 ok cheers mate . so if I run 1.2 bar 11 to 10 is ok ? Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted October 8, 2015 Share Posted October 8, 2015 The std ECU will run the injectors at 100% DC when it sees over 4.2v air flow signal for safety, at 1.2 bar as long as you don't see any leaner than 11.8 you should be fine. Link to comment Share on other sites More sharing options...
DT125 Posted October 8, 2015 Author Share Posted October 8, 2015 The std ECU will run the injectors at 100% DC when it sees over 4.2v air flow signal for safety, at 1.2 bar as long as you don't see any leaner than 11.8 you should be fine. ok so if I see 11.2 or less what do you think it could be ? a faulty o2 sensor . my engine managment light is always on . also 100% of the injectors should not be run on the motor way right . Link to comment Share on other sites More sharing options...
berg Posted October 8, 2015 Share Posted October 8, 2015 dipping into 10s seem a bit rich to me, what spec? My current BPU and my old single never went into 10s, always mid 11s on full throttle, odd time i did see low 11s, high 13s cruising and mid 14s on idle Link to comment Share on other sites More sharing options...
DT125 Posted October 8, 2015 Author Share Posted October 8, 2015 only a air filter and decat and exhaust . plus fcd but the boost controller isnt fitted yet . Link to comment Share on other sites More sharing options...
DT125 Posted October 8, 2015 Author Share Posted October 8, 2015 dipping into 10s seem a bit rich to me, what spec? My current BPU and my old single never went into 10s, always mid 11s on full throttle, odd time i did see low 11s, high 13s cruising and mid 14s on idle mines running 10.4 after i let off the throttle sometimes . Thats very lean . Also of the scale over 16 or 18 on costing very rich . Is that normal too ? Link to comment Share on other sites More sharing options...
berg Posted October 8, 2015 Share Posted October 8, 2015 Its the opposite way round, lower number is rich, higher is lean When letting completely off the throttle its normal for it to go very high on the gauge (16,17+) and should return to normal when youre back on Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted October 8, 2015 Share Posted October 8, 2015 They all run slightly different, but its pretty normal to see 10AFR on full boost, the AFRs go very lean on closed throttle because the injectors are shut off. Link to comment Share on other sites More sharing options...
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