Most performance mods will gain you efficiency IF you keep your foot out of your new-found power.

And 16 does seem low. Adjust your driving style, and do a full tune-up including O2 sensor. You should do all that before modding anyway.

ya it probably is the O2 sensor in this case i went to change the fuel filter yesterday(im loseing power when i have less then half a tank) and i think its the one that came with the car that thing is nastyyyyyyy. it was so bad i couldnt get it off ima take it to a dealer and let them ...deal...with it.

How hard is it to replace the O2 sensor? and how much would a new one run me?

And what kinda MPG are yall gettin?

I got mine off the same Ebay seller as you, your probably going to have to get an extra piece of 3 inch long pipe cause the Ebay pipe was pretty short. You might need an iat extender too.

Heres mine. Notice the extra peice of pipe

Attachment 75917


I got a generic filter, it didnt hold water but I got a K&N anyway Just type "K&N Cone" on ebay search and get one thats 3 inches in diameter. Thats what I did. Only $30.00.

How would you rate the seller he seems a bit of a jack a** in his response to people who leave him - comments.

3 inches extra pipe for what the intake or for the radiator hose? And what did you do with the sensor off the old airbox?

thx :-)

It depends on where you buy the sensor... If you buy it from GM Parts Direct, expect to spend $45-$50 totall... This will be a 4 wire heated sensor... After 50,000 miles they tend to go down hill in performance and the gas milage follows...

Do Not and I / We mean do not get a Bosch O2... Junk Junk Junk in a 3800... Get the Ac Delco unit... You'll be happy you did...

A decent tune up as well... New fule filter, new wires and plugs... we reccomend a set of NGK TR55's... A handfull of us have good results with these plugs... I have had good results with Autolite Professional series wires, and others have also had good results with Beldin( spelling ) Napa wires...

So you do have a few choices out there ;)

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ooo thx Jr

Im about to go take some pictures of my car and my truck for before and afters ...hopefully there will be afters :-)

and a quick question what would be a good way to clean my engine compartment out? engine degresser and a garden hose with a pinch of not careing for anything living?

The seller is ok

It took about 10 days to get my stuff. I know hes a power seller but I gotten things in 3-4 days from power sellers before..

Dont mind the where I circled. But see where I have the black coupler? you can pretty much see how short the pipeis. Im pretty sure your gonna need a peice of pipe to extend the intake. You can use it as is. I did for a while but after reading around on the forums decided to extend it.

All in all your gonna be happy. Above 3000 RPM when you have your foot all the way down on the gas it sounds badass.

I just use Gunk Engine bright and follow the directions. Worked really well.

Cool thx Comfy

welcome and i hope u like ur new intake

What exactly does it mean when an airfilter 'holds water?


-justin