alchresearch Posted March 14, 2018 Share Posted March 14, 2018 Doesn't that result in higher exhaust emissions? A bad remap could result in more unburnt fuel. Link to comment Share on other sites More sharing options...
0742Sheff Posted March 14, 2018 Author Share Posted March 14, 2018 Doesn't that result in higher exhaust emissions? A bad remap could result in more unburnt fuel. Which is why i am asking for recommendations. I have found somewhere that specialises in HDI's but it's no where near local. Right now i am thinking that fitting a blanking plate is the best bet and get the stage 1 remap done. Link to comment Share on other sites More sharing options...
Ontarian1981 Posted March 14, 2018 Share Posted March 14, 2018 (edited) They will, but they won't monitor the emissions in any detailed way, if at all. All I can get with my diagnostic equipment is how much the DPF filter is blocked and simple measurements of air, voltage and current at the upstream and downstream O2 sensors. I had a check engine light on for 7 years and passed the tailpipe emissions test 3 times. They changed the rules to computer diagnostics and I failed LOL. I believe it was a 02 sensor and an air intake valve or something like that. The cost was high so I scrapped the car, well it was 11 years old with 375 km on it and the tranny was knocking a bit etc. etc. Edited March 14, 2018 by Ontarian1981 Link to comment Share on other sites More sharing options...
Bargepole23 Posted March 15, 2018 Share Posted March 15, 2018 A bad remap could result in more unburnt fuel. What's the benefit of doing it? Link to comment Share on other sites More sharing options...
geared Posted March 15, 2018 Share Posted March 15, 2018 I had a check engine light on for 7 years and passed the tailpipe emissions test 3 times. They changed the rules to computer diagnostics and I failed LOL. I believe it was a 02 sensor and an air intake valve or something like that. The cost was high so I scrapped the car, well it was 11 years old with 375 km on it and the tranny was knocking a bit etc. etc. Yea but it's not a proper 'emissions' test because the car doesn't actually have a sensor to measure it's emissions accurately. It's more a test for displayed faults with the emission control systems. They're not so popular because for a tenner you can buy a scanner to clear all fault codes on the ECU, often these will stay off long enough to pass a quick check - then come back on when you drive home. What's the benefit of doing it? It's more faster like. Link to comment Share on other sites More sharing options...
truman Posted March 15, 2018 Share Posted March 15, 2018 What's the benefit of doing it? A good remap can give better performance and better fuel economy.. Link to comment Share on other sites More sharing options...
ANGELFIRE1 Posted March 15, 2018 Share Posted March 15, 2018 What's the benefit of doing it? Not sure if every diesel car is like a LR disco Td5 to re-map. " The TD5 engine was basically de-tuned by Land Rover to meet various specifications & regulations set out by countries from around the world. With the Standard Defender running from 122 to 127 hp and the Discovery at 139 hp however the engine is capable of producing allot more power. " If my memory serves we had the EGR removed and mapped from 139hp to around 180 hp. Better on fuel, much better torque and a lot lot nicer to drive. What's not to like about a re-map. My personal theory over the EGR debacle. The EGR is simply a device that re routes a portion of an engine's exhaust gas back to the engine cylinders to be re-burnt, supposedly to reduce emmissions (slightly). Here is why it's a useless addition. The diesel combustion engine requires little to make it work, CLEAN air and fuel as it is a compression-ignition engine. Why would you hinder it's performance by feeding it mucky air from the engine via the EGR which eventually gums up and restricts performance. That's my theory anyhow. Angel1. ---------- Post added 15-03-2018 at 19:15 ---------- And what about the pipes coming off the unit? I've seen a video where the guy just blocked them up, but he didn't go in to any details about if it is safe to do so and if it messes with the cars management system. Stuffed a bolt in the pipe, jubilee clip round it, job done. Angel1. Link to comment Share on other sites More sharing options...
0742Sheff Posted March 16, 2018 Author Share Posted March 16, 2018 Not sure if every diesel car is like a LR disco Td5 to re-map. " The TD5 engine was basically de-tuned by Land Rover to meet various specifications & regulations set out by countries from around the world. With the Standard Defender running from 122 to 127 hp and the Discovery at 139 hp however the engine is capable of producing allot more power. " If my memory serves we had the EGR removed and mapped from 139hp to around 180 hp. Better on fuel, much better torque and a lot lot nicer to drive. What's not to like about a re-map. My personal theory over the EGR debacle. The EGR is simply a device that re routes a portion of an engine's exhaust gas back to the engine cylinders to be re-burnt, supposedly to reduce emmissions (slightly). Here is why it's a useless addition. The diesel combustion engine requires little to make it work, CLEAN air and fuel as it is a compression-ignition engine. Why would you hinder it's performance by feeding it mucky air from the engine via the EGR which eventually gums up and restricts performance. That's my theory anyhow. Angel1. ---------- Post added 15-03-2018 at 19:15 ---------- Stuffed a bolt in the pipe, jubilee clip round it, job done. Angel1. Which raises the question of the DPF filter. If those gasses aren't being fed back into the engine, won't they clog up the DPF quicker? I'm always careful to use a DPF additive every 3k and Redex every tank anyway but that's because i'm paranoid because a DPF is bloody expensive! You are right about diesels being under tuned. I'll get roughly a third extra torque just from a stage 1 remap and a few mpg in fuel efficiency. It's win-win if you ask me Link to comment Share on other sites More sharing options...
ANGELFIRE1 Posted March 18, 2018 Share Posted March 18, 2018 Which raises the question of the DPF filter. If those gasses aren't being fed back into the engine, won't they clog up the DPF quicker? I'm always careful to use a DPF additive every 3k and Redex every tank anyway but that's because i'm paranoid because a DPF is bloody expensive! You are right about diesels being under tuned. I'll get roughly a third extra torque just from a stage 1 remap and a few mpg in fuel efficiency. It's win-win if you ask me The standard info for cleaning out the DPF is to give the car a good blast and get it good and hot. This apparently gets rid of the soot in the DPF by burning it away. Angel1, Link to comment Share on other sites More sharing options...
geared Posted March 19, 2018 Share Posted March 19, 2018 Which raises the question of the DPF filter. If those gasses aren't being fed back into the engine, won't they clog up the DPF quicker? Totally depends on the engine, some are just cleaner than others and won't have any problems. Some (usually older) engines have enough problems keeping the DPF clear on a totally original engine. Link to comment Share on other sites More sharing options...
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