performance O2 sensors

Still a newbie here; eight months into car tuning, loving the Aveo... had a p2135 code for awhile; it's stayed off for more than 40 engine cycles now (thankfully! :) but while researching the problem, I was reading about O2 sensors, and how most cars' factory O2 sensors only detect air/fuel mixture in the ranges the cars factory intake is meant to produce. I see some O2 sensors, such as Walker, boast increased performance by more accurately detecting the mixture (I have a CAI & exhaust) and the result is more power from better fuel delivery... I guess my question is, has anybody noticed a performance gain after switching to a wider spectrum O2 sensor? I already have one, and the other is on it's way; plan to install them anyways (myself! : ) just so I know my car is reading it's own vitals properly... ;)

if you go out of the factory range (the signal is just converted to a voltage, like 1-5v return signal) then the computer will not read it. And you will get a CEL. The range of OEM is not that bad anyhow, it is based on the intake, but also displacement. And even with a bolt on CAI you are not changing the time the cams open, just the amount of air available.

Nice! As always, appreciate the info! ;) Got them on today, along with drilling/cutting out the holes close to the intake... a cool modification I read about in a couple places on here! :) The tool I borrowed from Autozone wouldn't fit around the upstream sensor, so I removed the exhaust manifold heat shield thingy, hoping nothing else would come off (catalytic converter, etc. :p ) and used a wrench... SEEMS to have made an improvement; the sensor and the cutting... drove for a little bit earlier, with only about 10 holes cut out & factory sensors, and didn't notice much, if anything... I'll be going out for some more 0-60mph tests tomorrow, and will report back soon! :)

Ok! Between the Walker O2 sensors, and the holes I drilled/cut near the intake, I am consistently getting times .25 - .31 seconds faster... (for 0-60 mph) Also, the acceleration seems to be smoother, as well as a bit faster. Better starts, it seems! I am happy, and doing it was fun! Now on to headers... ;)

What holes drilled out? Post a link to one of those threads, I missed something.

Cool! I'll look for them now... :)

Here it is!!! :D This link should work... (for now ; )

http://www.aveoforum.com/forum/f94/g...r-intake-8152/

Well worth cutting up the plastic "honeycomb" and I have to agree with this, after re-reading some:
The open G.O.A.T. gives you the best of both worlds, a short RAM and CAI...
Not an exact quote, but close enough! Good stuff! :D

Oh, that thing lol, already did that, it makes them look better too.

Yeah... it really seems to help the power, and recently, I wrapped the lower half of the intake with like 5 layers of foil, all tight and stuff. I read foil has the same r-factor as pink insulation, and that's what the intake pipe is... figured a few extra layers would help! And it seems to! Also put a fan powered by 2 D batteries behind the holes, blowing at the intake... still testing, and playing with the angles... took a couple times, and they were good! More on this as I know what it do... ;)

It's going to take more than a small fan like that. Get an electronic supercharger, they are on eBay and not very expensive if I remember.

I posted a link to something like that... Most everyone on here seemed to think all those were gimmicky and would impede airflow, if anything... I am seriously planning for turbo, but if you find a GOOD supercharger setup, lemme know! Post it on here, please! I'd give it a try... ;) Probably cheaper than turbo, and a fun thing to play with in the meantime! ;) it'd be SWEET to try both... :p ;) :D

I remember reading the same bit now that you mention it. The hard part is pushing more air than your intake sucks in. However even getting the pressure up to atmosphere levels was supposed to be better than nothing. Do some more research, my knowledge is about 4 years old, they may have improved on things by now. Good luck.

on my silver 05, i had a short ram on it, but i just cut a hole in the hood and slapped an autozone scoop over it... i cant say for times... but that son of a biscuit pulled hard at sixty...

Thanks, Daug! And hey Hatchback, did you have the hose that hooks up to the end of the intake attached to the roofscoop?