thedon Posted June 6, 2016 Share Posted June 6, 2016 I regularly get P1146/7 error codes because I have HFCs. The car has already been Uprev mapped - how much just to switch off the O2 sensors? Also anyone know somewhere that can do this near Suffolk? Thanks. Quote Link to comment Share on other sites More sharing options...
zebedy Posted June 6, 2016 Share Posted June 6, 2016 Cany you use spacers?? Got mine from Chris at tarmac sports and works a treat. Quote Link to comment Share on other sites More sharing options...
thedon Posted June 6, 2016 Author Share Posted June 6, 2016 Cheers - what do they do? send no signal at all? Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted June 6, 2016 Share Posted June 6, 2016 Most tuners will switch off the sensors as part of the Uprev tune. Quote Link to comment Share on other sites More sharing options...
thedon Posted June 6, 2016 Author Share Posted June 6, 2016 Thanks Alex, but Horsham obviously didn't. It was mapped before my time, hence wondering how much it would likely cost to simply switch them off now. Would you suggest spacers as a cheaper option? Quote Link to comment Share on other sites More sharing options...
Richf Posted June 6, 2016 Share Posted June 6, 2016 Thanks Alex, but Horsham obviously didn't. It was mapped before my time, hence wondering how much it would likely cost to simply switch them off now. Would you suggest spacers as a cheaper option? Strange , we usually do Spacers might be a cheaper option than fuel to go somewhere to get them switched off Quote Link to comment Share on other sites More sharing options...
thedon Posted June 6, 2016 Author Share Posted June 6, 2016 Thanks, Rich. Do spacers stop the error codes triggering the EML? Quote Link to comment Share on other sites More sharing options...
Richf Posted June 6, 2016 Share Posted June 6, 2016 Thanks, Rich. Do spacers stop the error codes triggering the EML? Sometimes Quote Link to comment Share on other sites More sharing options...
thedon Posted June 6, 2016 Author Share Posted June 6, 2016 You're teasing me... why only sometimes? Quote Link to comment Share on other sites More sharing options...
Richf Posted June 6, 2016 Share Posted June 6, 2016 You're teasing me... why only sometimes? On some cars with some hfc it works and others it doesnt Quote Link to comment Share on other sites More sharing options...
davey_83 Posted June 6, 2016 Share Posted June 6, 2016 The spacers effectively move the senor further away from the exhaust stream, theoretical seeing less co2? Quote Link to comment Share on other sites More sharing options...
Lewis_UK Posted June 6, 2016 Share Posted June 6, 2016 I am running Silenced Japspeed Decats with the "Generic" Right Angle spacers, 7,000 miles no EML (Touch Wood) Quote Link to comment Share on other sites More sharing options...
Stutopia Posted June 6, 2016 Share Posted June 6, 2016 You're teasing me... why only sometimes? Spacers work some and not others. They didn't for me, so I went in for an upRev to sort it. At the price, they're definitely worth a shot. Quote Link to comment Share on other sites More sharing options...
PageyUK Posted June 6, 2016 Share Posted June 6, 2016 If the o2 sensor doesn't report back with a fault after a ecu tweak, how will you know when they are faulty, or is it just the tolerance level that is altered? Quote Link to comment Share on other sites More sharing options...
Richf Posted June 7, 2016 Share Posted June 7, 2016 If the o2 sensor doesn't report back with a fault after a ecu tweak, how will you know when they are faulty, or is it just the tolerance level that is altered? Its the post cat sensors that are switched off, the pre cat ones are still used . Quote Link to comment Share on other sites More sharing options...
fake ben taylor Posted June 7, 2016 Share Posted June 7, 2016 If HDev usually do turn them off it might be a actual fault? Quote Link to comment Share on other sites More sharing options...
Richf Posted June 7, 2016 Share Posted June 7, 2016 If HDev usually do turn them off it might be a actual fault? We usually turn them off if the car has decats or hfc's there is no need to if the stock cats fitted Quote Link to comment Share on other sites More sharing options...
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