how much boost can stock CIS handle?

[Ameer Antar]

>That tranny can barely handle stock boost.  Going to 2.0 is very likely
>to kill it.

well, that's ok. I wanna see how long it would last. I'd want to convert to 
a manual tranny anyway, but I'd like to live out this tranny's lifetime. 
The only thing is, I think the life of the a/t depends more on how the car 
is driven than how high the boost can get. This car is my daily driver, and 
I don't like getting tickets, so 1.2+ bar hardly ever gets used even on the 
highway. I think most of the wear would occur if you do drag race starts or 
whenever you jab the pedal hard. But then, I really don't know why these 
tranny's break.

>System pressure has little effect and raising it has been reported
>to have the opposite effect.

ya, figures...CIS is not really anything like EFI.

>An AFR gauge attached to the O2 sensor will only read from
>'definitely lean' to 'maybe OK'... unless you get one of
>the really expensive wide range sensors and meters... which
>would cost way more than say IA's box.  I think even the
>meter (unofficially) using Honda's wide range sensor
>is (will be actually) over $400.  (Search the archives
>on diy-efi.org for 'EGOR'.)

actually the one I have by autometer is pretty nice. It uses 20 led's 
instead of others which use 8 or so, and msd's which only has 2! So 
resolution is pretty fine. I can even see on the afr gauge when the ecu is 
adjusting the mixture w/ the freq. valve when the led's start cycling. The 
range of the gauge is dependent on the o2 sensor, not the gauge, b/c the 
gauge reads from 0-1V which is the max output range of the sensor. So it's 
not like the gauge is cutting off the extreme lean or rich values. The only 
way to widen the range is to widen the range of the o2 sensor, so 0V would 
correspond to a leaner mixture and 1V would be a richer mixture compared to 
the stock sensor. But there's really no point in seeing what the mixture is 
beyond the stock upper and lower mixture limits of the o2 sensor. Very lean 
mixture would light up only the first LED, while extremely rich ones light 
up only the last.

The main point though is if the engine was running anywhere out of range of 
the stock o2 sensor, running would be extremely rough, there could be 
detonation, and emissions would be through the roof. I don't see the need 
for a wider range sensing system, b/c the mixture should never be out of 
that range. My plan is to stay under 1.8 bar, so I doubt these issues will 
be as much of a problem compared to 2.2 bar engine. Thanks for the input.

-ameer