CLuTZ Donating Members 227 Member For: 14y 1m 17d Gender: Male Location: Melbourne Posted 14/01/12 08:45 AM Share Posted 14/01/12 08:45 AM (edited) Hey all,I have been driving turbocharged cars for a while now, with 2 having a fuel pressure gauge fitted.Upon decel (throttle off) these always read 0psi as no fuel is being sent to the rail.Lately I have noticed that my Inst. Econ. is reading 5-6L/100k on decel (throttle off) on my G6E turbo.I was in N.Z recently and had an XR6 rental car and sure enough when I drove around in it, it had a 0.00L/100k Inst Econ.Is there something wrong with my car? Fuel pressure regulator perhaps? I have noticed that it has been using a bit more petrol than usual. I'm using 95 E10.Thanks for any replies,CLuTZ Edited 14/01/12 08:46 AM by CLuTZ Link to comment https://www.fordxr6turbo.com/forum/topic/78524-inst-econ/ Share on other sites More sharing options...
MexicanBatman G666E Turbo!!! Member 1,008 Member For: 15y 5m 17d Gender: Male Posted 14/01/12 09:35 AM Share Posted 14/01/12 09:35 AM My car reads 0 when it's on stock tuneWith tune in it it reads as low as 3.3This is on the dash, makes no diff to overall consumption I have found Link to comment https://www.fordxr6turbo.com/forum/topic/78524-inst-econ/#findComment-1180869 Share on other sites More sharing options...
dre Resident idiot. Donating Members 2,068 Member For: 14y 9m 13d Gender: Male Location: Melbourne Posted 14/01/12 09:50 AM Share Posted 14/01/12 09:50 AM mines 0 with tune. Link to comment https://www.fordxr6turbo.com/forum/topic/78524-inst-econ/#findComment-1180881 Share on other sites More sharing options...
SuckSqueezeBangBlow ʎǝʞuoɯ ɹoıuǝs Donating Members 1,808 Member For: 16y 6m 17d Gender: Male Posted 14/01/12 09:53 AM Share Posted 14/01/12 09:53 AM (edited) wouldn't it depend on what RPM you are getting off the throttle?I will compare to the instant economy readout next time I drive, but according to my wideband it only cuts fuel if decelerating above 1.8 to 2k RPM (from memory) Edited 14/01/12 09:54 AM by JC807 Link to comment https://www.fordxr6turbo.com/forum/topic/78524-inst-econ/#findComment-1180883 Share on other sites More sharing options...
Boganspeed Will do skids for food Silver Donating Members 1,177 Member For: 13y 7m 29d Gender: Male Location: Perth SOR Posted 14/01/12 02:33 PM Share Posted 14/01/12 02:33 PM Mine shows both.Sometmes it shows a number which increases as I slow down until it switches to Litres per hour when I'm stopped.Other times it shows zero.Dunno why it does different things. Wierd. Link to comment https://www.fordxr6turbo.com/forum/topic/78524-inst-econ/#findComment-1180952 Share on other sites More sharing options...
1600dave Donating Members 872 Member For: 14y 5m 23d Posted 14/01/12 09:49 PM Share Posted 14/01/12 09:49 PM My BF2 shows numbers on deceleration but never seen it hit zero so I dunno what the go is. Link to comment https://www.fordxr6turbo.com/forum/topic/78524-inst-econ/#findComment-1180981 Share on other sites More sharing options...
ratter Member 6,793 Member For: 19y 1m 6d Gender: Male Location: @ my laptop Posted 14/01/12 10:53 PM Share Posted 14/01/12 10:53 PM (edited) It shows zero when decel fuel shut off has been activated, it gets activated by a ceratin load value is acheived after a certain load value was being used before shutting throttle, it also requires a certain road speed before being activated and will return to normal fueling when a certain road speed has been met. Edited 15/01/12 01:09 AM by ratter 1 Link to comment https://www.fordxr6turbo.com/forum/topic/78524-inst-econ/#findComment-1180995 Share on other sites More sharing options...
Impellor Member 835 Member For: 14y 11m 13d Gender: Not Telling Posted 15/01/12 12:53 AM Share Posted 15/01/12 12:53 AM Never seen 0/ litres best I see is 1.7 litres per hour when stopped, Cheers Link to comment https://www.fordxr6turbo.com/forum/topic/78524-inst-econ/#findComment-1181018 Share on other sites More sharing options...
1600dave Donating Members 872 Member For: 14y 5m 23d Posted 15/01/12 02:21 AM Share Posted 15/01/12 02:21 AM I gave up watching instantaneous fuel, just have it on avg speed now and don't really take notice of it.Instantaneous fuel, dist to empty and avg fuel ruin the fun. Link to comment https://www.fordxr6turbo.com/forum/topic/78524-inst-econ/#findComment-1181038 Share on other sites More sharing options...
CLuTZ Donating Members 227 Member For: 14y 1m 17d Gender: Male Location: Melbourne Posted 15/01/12 03:11 AM Author Share Posted 15/01/12 03:11 AM (edited) It shows zero when decel fuel shut off has been activated, it gets activated by a ceratin load value is acheived after a certain load value was being used before shutting throttle, it also requires a certain road speed before being activated and will return to normal fueling when a certain road speed has been met.Thanks for clearing that up- must be different for the N/A's because every time no matter what rev or speed, it would always decel on 0.It got me thinking because I would have though it would've been the same if not close to the figure on idle.Is this something that can be tuned to read as close to 0 as possible on any speed/load while decelerating?? It would reduce my fuel consumption dramatically! Edited 15/01/12 03:12 AM by CLuTZ Link to comment https://www.fordxr6turbo.com/forum/topic/78524-inst-econ/#findComment-1181052 Share on other sites More sharing options...
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