ok heres my setup: 94 GSR
just rebuilt the whole motor(250 miles on it,still braking it in)
10:1 Je pistons,LS crank with Ls Eagle Rods
Skunk2 stage 2 cams,skunk2 springs,retainters and valves and
Nology Wires.Also AEM cold air intake,4-2-1 exhaust header, with a full 2 1/2 exhaust.And a P28 civic ECU.
No check engine lights!

HERES MY TEST RESULTS:

HC(PPM)Limit 167
I got 227

CO% Limit 0.89
I got 6.39

Also keep in mind that i was running 93 octone.and i found one of my vac. line was disconected.Ive been reading that lower the octone the better for emissions right?
What do you think i can do to lower those number. thanx alot for the help

 

From the various threads I've read on emissions failing.... people say you're supposed to run the crap out of your car before going in. That gets the catalytic converted doing its job better.
Good luck
-Rik

 

take it to jeremy. he always has a solution

 

i ran it for about 20 mins before.i have a magaflow high flow cat.

and i forgot to add my NOX results.
Limit-1944
mine-217
what does NOX stand for?
THE ONLY one i pass!!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by matto2413 &raquo;</TD></TR><TR><TD CLASS="quote">
CO% Limit 0.89
I got 6.39


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DAMN thats allot of carbon monoxide........it must be a pig on gas........way to rich there.........is your ECU tuned? is your o2 sensor working?

 

Seafoam+retard timing..Does the trick on most hondas..

 

Could be the stage 2 cams, but the tuning on your ecu is off, if you are running that rich...wouldn't hurt to check your O2 sensor or (s). How old is the cat, it's probbably bad..6.39 CO is way to rich...

 

i would assume that my o2 sensor is working because i have no CEL. and the cats a yr old, so i dont think that went bad.and no my ECU is not tuned, i just put together my motor/put it in like a week ago.im runnign stock injectors,fuel pump and i didnt change my fuel pressure.what do you think about me running a p28 ecu not a p72.does that have anything to do with it? you think if i retard the timing a couple degress it would help out a little

 

retarding timing to 16 btdc it should lower ur hc, also do a tune up, airfliter, cap rotor plugs wires

 

already did a tune up.do you think the nology wires would affect it in anyway.

 

If you haven't done so already, use a set of standard NGK copper plugs. You mentioned lowering the octane gas you are using, this is incorrect. A stock 94 GS-R is supposed to be running 91+, and with 10:1 compression you need to run 91+ or it will knock/ping. On the subject of gas, not all of it is created equal. Try using Shell or other "TopTier" fuel provider.

You should NOT assume the o2 is ok just because you don't have CEL. Do a search for testing the o2. If you replace it use an OEM Denso, and not one of those $20 POS Bosch sensors.

You also didn't mention if you are using the stock IM for a B18C1. If so, you do realize a P28 won't operate the secondary butterfly in the IM don't you. If you have the original P72 ECU you may as well give it a try since you are un-tuned and running a mostly "stock" setup with cams + a little more stroke, and you already know it will fail the way it sits. BTW - I think you might want to do some research on those cams. I can't say with 100% certainty, but I think your setup is WAY to tame for S2S2 cams.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by matto2413 &raquo;</TD></TR><TR><TD CLASS="quote">already did a tune up.do you think the nology wires would affect it in anyway.</TD></TR></TABLE>

uggggh u got nology, return to stock wires, they suck. try resetting ur ECU as well

 

i am using the stock GSR manifold,but the butterfly plate was removed.and right now my car is running to rich, i could understand if it was running to lean, because i did find a vacuum leak,and also with the butterfly removed its getting a little bit more air.not to sure how its to rich though.

And by tame you mean like it cant handle the S2S2 cams? if so how do you figure. my head completely built.i could see if my head was stock but its not. with all new valves/dual valve springs,and new retainers.

 

NOX stands for Oxides of Nitrogen, it's caused by high engine temps. When you get the car tested on the dyno for emissions, it's putting your car on a load and tests for NOX. Retarding your timing aint gonna help you at all my friend, as a matter of fact they might fail you for the functional test(timing). I'll try the p28. If your not getting any CEL and your failing for high CO(carbon monoxide), it might be he ecu. I tested a Rex that failed CO at 4%, couldn't find the problem. Then finally we swapped the ecu, passed with no problems.

 

replace ur cams n exhaust with stock ones. is the ecu chipped?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by matto2413 &raquo;</TD></TR><TR><TD CLASS="quote">i could understand if it was running to lean, because i did find a vacuum leak,and also with the butterfly removed its getting a little bit more air.not to sure how its to rich though.
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The car has a MAP sensor, thus a vacuum leak causes it to idle slightly higher then it should (which the IACV will compenstate for and lower it....assuming its a not a huge leak). The butterflies are not making a difference on idle (the throttle body limits how much air gets past). You need to get an ecu tuned for your car....and/or run a stock P72 and keep it part throttle and under vtec range.

 

where did you get your ecu, are you sure its not "chipped".

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by matto2413 &raquo;</TD></TR><TR><TD CLASS="quote">i am using the stock GSR manifold,but the butterfly plate was removed.and right now my car is running to rich, i could understand if it was running to lean, because i did find a vacuum leak,and also with the butterfly removed its getting a little bit more air.not to sure how its to rich though.

And by tame you mean like it cant handle the S2S2 cams? if so how do you figure. my head completely built.i could see if my head was stock but its not. with all new valves/dual valve springs,and new retainers.</TD></TR></TABLE>

IDK what to tell you. It could be multiple issues, I would still check the o2, and give the other ECU a shot.

As far as the cams go they may not be your #1 problem but, as I said, I am not an engine builder. I like spending time in the all-motor section & from a lot of posts I have seen would agree you would want a bit more compression (since yours is near stock) to take full advantage of the S2S2 cams, built head or not. The other factor is tuning is key for those cams. Don't take my word for it search around. There are tons of guys with stock or mild builds getting very respectable numbers with similar setups out of the S2S1 cams.

This is straight from Skunk2.com:
Stage II: Stage II profiles are more aggressive than Stage I profiles, and are designed for modified engines operating at higher rev ranges. Upgrading to Skunk2 Racing valvetrain components is required for proper operation. Stock idle and emission characteristics may be slightly compromised, but fair-to-good driveability allows them to still be used on dual-purpose vehicles. Proper tuning, an upgraded intake system, and an exhaust system are required in order to maximize the potential of these camshafts. Do not use oversized valves.

 

Properly tune the setup and your numbers should improve.

 

the cams wont change the emissions, because they use stock non-vtec lobes.

 

when I failed emmissions i just beat the snot out of my car then took it right to the garage and it passed right away.

 

i found out today that you dont need to pass emissions to register your car.this whole time i was always told that in order to register your car you have to pass but you dont. you just have to go to emissions,whether you pass or fail.atleast thats how it is in connecticut.

and also that cams shouldnt have anything to do with why im running to rich. which was the main factor why i failed.