Ok heres the lowdown.....
"d16a6, 11.5:1 compression, crane 2 cam"

Recently got the car out of storage, ran great.
Changed oil and ran a half a tank of 115 octane turbo blue through it.
Ran great, then performance began diminish.
There are no codes being thrown and it seems to run better in open loop with o2 sensor unplugged.

Any ideas?????

 

the leaded gasoline is fouling up your O2 sensor - if you still have cat on it, the gas isn't doing it much good either

 

You're getting used to having a fast car, and now it isn't fast enough for you. welcome to my world

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LSVTEC 91 Civic &raquo;</TD></TR><TR><TD CLASS="quote">You're getting used to having a fast car, and now it isn't fast enough for you. welcome to my world </TD></TR></TABLE>

and if you are 100% this is NOT the case do a compression test.

 

when was your last tune up?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jlicrx &raquo;</TD></TR><TR><TD CLASS="quote">the leaded gasoline is fouling up your O2 sensor - if you still have cat on it, the gas isn't doing it much good either </TD></TR></TABLE>

This was my thought. Especially if you didn't advance the timing any. I would think you are putting in a slower burning fuel without changing anything, you would have more unburned fuel going out of the motor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jlicrx &raquo;</TD></TR><TR><TD CLASS="quote">the leaded gasoline is fouling up your O2 sensor - if you still have cat on it, the gas isn't doing it much good either </TD></TR></TABLE>

yup, I agree.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LSVTEC 91 Civic &raquo;</TD></TR><TR><TD CLASS="quote">You're getting used to having a fast car, and now it isn't fast enough for you. welcome to my world </TD></TR></TABLE>

yep, thats how the money gets sucked outta your pocket lol

 

Thanks for the feedback,

Im gonna buy a new 02 sensor. Im pretty sure thats the problem, just funny how it didnt throw a code. I may just have to back the timing off to live with 93 octane.

 

let me get this straight....you put leaded gasoline in your car???

And yes you might have a lazy 02 but like everyone else said prob. bad gas, and or you need a tuneup.....get any mifiring going on or rough idle/vibrations lately?<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1point5CRX &raquo;</TD></TR><TR><TD CLASS="quote">

yep, thats how the money gets sucked outta your pocket lol</TD></TR></TABLE>

And if you think driving a slightly modded crx is FAST.....lol then you need to live a little or video tape your friend blasting your car then you'll realize how fast it SOUNDS but how slow it really is going....lol

 

Did you gain any weight?

Seriosuly though...as mentioned above...you're just gettin used to a faster car.