steel manifold and gas consumption

letsrock

I have seen a few good deals with the SS manifold for IS300, and wonder if it will add pressure to the fuel consumption?
Many thanks in advance for helping.

letsrock

It has been over 1 week.   The car is running fine.

Alvin helped me to clear the throttle shuttle and also replaced to iridium spark plugs.  It has faster response now.

letsrock

Finally changed 3 sensors. so now back to the old manifold with new sensors.

after 20Km, no problem at all (touch wood).

letsrock

Thanks all.

Eric

Go and see if Leung can help on this issue.

古惑強

Sounds like you need an additional 02 cheater.  But then again, it is a bad idea to de-cat a foot car that you use everyday.

coupeelvin

Shoudl should mod. old cars rather than new cars. new cars has too many restrictions

letsrock

Seems like there is more O2 sensors  for the Asian version, vs US.  

Found the issue to be another one that is located at the middle of the mid pipe.  Maybe that is why the O2 cheater doesn't work.

But due to the sunk cost and time that have already involved, i am giving up on this.

PuntoPatrick

U better try another cheater.

letsrock

I am totally haunted by the engine light.

coupeelvin

回復  coupeelvin


    What do you mean?  Can you elaborate on this?  You mean to the O2 cheater ...
letsrock 發表於 2009-12-25 23:39

You should have 4 wires on the O2 sensor, or the O2 cheater. 2 of them are signal wires, and 2 of them are the heater filament. Well, you can:
1. wire the signal from the front O2 sensor to the rear O2 sensor socket. (note, not the rear O2 sensor or rear O2 cheater, BUT the socket for the original rear O2 sensor)
2. wire the 2 filament wires from the rear O2 sensor socket to the O2 cheater's filament wires.

In this way, the rear O2 sensor signal will follow that of the 1st O2 sensor...

BUT I'm not sure if this will work.

letsrock

回復 22# 古惑強


    Will be switching back to the original tomorrow.

古惑強

Are you going back to original or you are asking someone to help you with the O2 cheater?

letsrock

回復 20# coupeelvin


    What do you mean?  Can you elaborate on this?  You mean to the O2 cheater?

coupeelvin

I think you can try to wire the 1st O2 sensor output as the 1st and also the 2nd O2 sensor signal to try out.

letsrock

回復 18# 古惑強


    Yeah, that is why i am thinking to switch back to the original one.

But really, when the engine light wasn't on yet, could really feel the car had more power and much faster response.

古惑強

Oh shit!

letsrock

Checked installation and everything correct, also the led indicator is on.  Reset computer, and then engine light still came on after about 10km.............

Due to the engine light is on, gas consumption has increased about 20%.

AbarthJoe

O2 cheater cheat the buyer?

letsrock

Installed O2 cheater this morning, and the engine light came on after about 5km.....