Basic Performance upgrade

4gbanger

1,500 RPM
Senior Member
Jun 26, 2013
1,958
386
1,683
Johor/ShahAlam
well im not so sure but the its only minor jerk and felt like abit power loss. it also happen when i'm at low rev cruise..
 

zaifulaika

Active Member
Dec 24, 2013
32
5
508
Kuala Lumpur
well im not so sure but the its only minor jerk and felt like abit power loss. it also happen when i'm at low rev cruise..
bro, i have just about the same problem like yours.... starting from few days back, my atr start to 'cough' when cruising lower rev (below 3000). loss power and also jerking when cruising at steady speed. this morning, started to jerking even bad. Ask around before, some said because of the air flow sensor, some said because of the O2 sensor and the other told me because of the crank shaft...

anyone can give me a hand here.... :confused:
 

biao

Known Member
Senior Member
Oct 21, 2012
348
24
518
perak / ipoh
bro, i have just about the same problem like yours.... starting from few days back, my atr start to 'cough' when cruising lower rev (below 3000). loss power and also jerking when cruising at steady speed. this morning, started to jerking even bad. Ask around before, some said because of the air flow sensor, some said because of the O2 sensor and the other told me because of the crank shaft...

anyone can give me a hand here.... :confused:
if is air flow sensor problem, u pedal heavy let the turbo kick in, when the jerking come, the engine will look like have a emergency brake, total pull back the power and when u have pedal but no any response. so i think is air flow sensor is time to change. cos i just change 1 only before cny, because i wash it then spoil already.
 

4gbanger

1,500 RPM
Senior Member
Jun 26, 2013
1,958
386
1,683
Johor/ShahAlam
well based on my experience, O2 sensor is the last resort. if air flow sensor kong, ur FC and power loss and also it affects the idling problem, ur car even barely drivable. better check the plug, plug cable or ignition coil. last time my car jerking really bad when revving above 4000rpm full throttle. found out that i use a wrong sets of plug. it was denso iridium IW20(meant for stock everything). i was suppost to use IW22 or IW24(meant for boost above stock)
 

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im using a 1983 e28........
how to cuci da spark plugs?

the plugs are
SPARK PLUGS BOSCH SUPER BP5ES
W8DC

can sum1 teach me any other ways to wash the plugs?
the technique im using now is
i first wash it in petrol.....then i use a tooth brush to wash the head.......then i wash again n use the sand paper to scrap the black stuffz....(if not mistaken is copper oxide) then i wash again.......kau tim.....clean like new....
any other wayz? plz share




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