hi people! i just got a new APEXi turbo timer (black limited) which comes with A/F, O2, Batt, and Timer. Everything's working fine but the A/F reading shows nothing "--.-" in the first 2-3 minutes when i start my engine. is this normal or do i need to check my airflow sensor? the engine (4G93T - Auto) is half-cut just masuk last week, need to make sure i check EVERYTHING while still within the 10 days guarantee.
QUESTION on A/F reading
- Thread starter emptywallet
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bro emtywallet,it got nothing to do with ur air flow meter.ur o2
needs time to warm up first before there's a reading like putracraze said.
if after 5 min while cruising n there's still no reading,u have to check
ur o2 sensor whether it's still working or not.
needs time to warm up first before there's a reading like putracraze said.
if after 5 min while cruising n there's still no reading,u have to check
ur o2 sensor whether it's still working or not.
yeap yeap... try reading hypertune latest edition... got teach how to read AFR meter.... basically narrow band O2 sensor need to warm up before it starts to give signal... means u need to travel at normal operating temperature only it will give u readings...
i've read somewhere that narrow band O2 sensor can be modified become wideband O2 sensor... is it by jz adding additional 2 wires to it??...
i've read somewhere that narrow band O2 sensor can be modified become wideband O2 sensor... is it by jz adding additional 2 wires to it??...
i don't think we can convert a narrow band o2 sensor to a wide band bro
skywalker just by adding a wire on it.if converting is that ez,those wide
band o2 maker go muflis liow.....:_:
.......:top: ..... bosch will chap lap like tat....
den why some wanna add extra 2 wires to their narrow band O2 sensor??...
another question, lets say a carburettor engine car wanna install O2 sensor jz because wanna use AFR meter to monitor the carb AFR mixture... is it possible??.. some say the readings wont be accurate.... the inaccuracy is by how many percent??....
bro sky,who wanna add extra wire?it's possible but i can't recall whether it works or not.if i'm not mistaken it will work.there's a reading.my friend did it around 4 years ago because he's using apex'i timer at that time.i think u can try it skywalker.u can source a cheap 02sensor at chop shop for around rm20.look for a 2 wire.1 wire is signal while the other one is power.the body act as a ground.may the force be with u......:_:
bro skywalker,
may the force be with you, why do u wan to monitor a narrowband O2? the only thing ur O2 can tell u is: lean burn, rich burn, normal burn.... that's it....
u will never know how exactly rich or how lean until ur piston fires a big hole or other disasterous potential damage....
may the force be with you, why do u wan to monitor a narrowband O2? the only thing ur O2 can tell u is: lean burn, rich burn, normal burn.... that's it....
u will never know how exactly rich or how lean until ur piston fires a big hole or other disasterous potential damage....
dunno leh why add extra 2 wire.... saw it before in other automotive forum (oversea one lah)....
anyway, i thought of this idea long before... i need to drill hole in my extractor to install the O2 sensor as well rite??... my current one dun have lubang for O2 sensor...
as for wiring, a normal AFR gauge has how many wires to connect??... directly connect to the O2 sensor wires??...
yup,u need to drill hole to ur extractor.i thought ur using apex'i timer.hehehe...
i forgot liow how many wire leh the afr comes with.try ask those guy who sell
auto gauge meter in the market plc.connect the signal wire from the o2 to ur
gauge's signal receiver.happy modding.....
kenneth,yow yeng mar iswara using afr monitor.:_:.how many carburetor car
that u know using afr?hardly any right?won't blow a hole one lar on his piston.
the force always with him what........jj:shades_smile: no hard feeling skywalker.
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GT,
then by all means go ahead, it's just my suggestion that if you wanna place an AFR monitoring device, go wideband n however that's for tuning purposes only.... you can also place a permanent wideband into ur car but only if you can afford the cost of wideband sensor replacement....
i'm using standalone with AFR monitoring on narrow band, and it doesn't help me in tuning at all, the purpose of that O2 in my car is just for closed loop feedback to my standalone....
sky,
just my 2 cents, we take this as constructive conversation and not a sarcastic one, we can do anything to our car, but whether the cost vs gain benefits us or not is another matter....
then by all means go ahead, it's just my suggestion that if you wanna place an AFR monitoring device, go wideband n however that's for tuning purposes only.... you can also place a permanent wideband into ur car but only if you can afford the cost of wideband sensor replacement....
i'm using standalone with AFR monitoring on narrow band, and it doesn't help me in tuning at all, the purpose of that O2 in my car is just for closed loop feedback to my standalone....
sky,
just my 2 cents, we take this as constructive conversation and not a sarcastic one, we can do anything to our car, but whether the cost vs gain benefits us or not is another matter....
nobody is saying nobody sarcastic here bro.maybe misunderstanding.just joking around only.that's y i said earlier.he want he's car to look cool mar(yaw yeng)so be it lor.:_: there's hardly any carburetor car with afr so it will look cool lor if he got one on his ride.wide band is only suitable for those modified with ems.cheers...........
nola... the one asking about apexi timer not me.... his car already got ecu, so can directly tap the signal cable from there....
hmm... vr sarcastic...
nvm nvm... jz some crazy idea of mine... coz learning how to tune AFR on carbie engines is kinda hard... coz most expensive workshop will use wideband O2 sensor while smaller workshop depends on the mechs knowledge and experience....
since i dun have all 3 the above, mayb a AFR meter can help me in my diy tuning... besides, by monitoring the close loop n open loop stuff in the AFR can help me save petrol on highway... (possible, according to hypertune tech talk latest edition about gauges reading)....
vr true... but somehow, if this crazy idea of mine might possibly work, i would wanna see it comes true....
aiseh taikor, i wanna put AFR not because yau yeng la... if want yau yeng, i long time put whole sets of Defi meters, RSM, SAFC, VAFC bla bla bla whether it works or not....nobody is saying nobody sarcastic here bro.maybe misunderstanding.just joking around only.that's y i said earlier.he want he's car to look cool mar(yaw yeng)so be it lor.:_: there's hardly any carburetor car with afr so it will look cool lor if he got one on his ride.wide band is only suitable for those modified with ems.cheers...........
but since kenneth siad narrowband O2 sensor cannot determine the AFR well, whats the use of it for actually??....
sky,
if i remember this correctly, cipan supercas in ZTH DIY forum posted a link for DIY Wideband device, u can try that it's quite cheap too (eerh i haven't tried so no guarantee)....
deacon,
yep, me using apexi turbo timer too, these air fuel ratio is using the narrow band O2 voltage to determine ur AFR, so it's just a prediction rather than actual data, furthermore the prediction can be calibrated if you wan, so dun trust that lerh....
if i remember this correctly, cipan supercas in ZTH DIY forum posted a link for DIY Wideband device, u can try that it's quite cheap too (eerh i haven't tried so no guarantee)....
deacon,
yep, me using apexi turbo timer too, these air fuel ratio is using the narrow band O2 voltage to determine ur AFR, so it's just a prediction rather than actual data, furthermore the prediction can be calibrated if you wan, so dun trust that lerh....
yup,i agreed that u can't use the narrow band to tune ur car but to be frank,sometimes when u look at the reading on a narrow band o2 especially the 4 wire one,u will see that it's not far from the wide band reading.narrow band o2 on our car is to determine how much fuel been injected to the engine to retain optimized air n fuel ratio.narrow band o2 just roughly calculated the heat generated at ur exhaust.the higher the temp,the leaner ur engine burn n vice versa.wide band are more accurate that's why all tuner use it to tune high hp car. sorry for the misunderstanding sky n kennethfong.....:_:
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