I also failed smog test HELP

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Jan 23, 2012 | 01:11 PM

#21

GREGGPENN

Race Director

Joined: Nov 2003

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From: Overland Park Kansas

2020 Corvette of the Year Finalist (appearance mods)

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Quote:

Originally Posted by Marv02

The Cat is New the O2 is new everything just about new in the car I am going to try the race gas and the alcohol trick next I hope this works.

If it doesn't, I'd try installing front cats. Magnaflow hi-flows would be my first choice. They sell two options: ceramic or metallic. The later has less restriction -- though either [together] will flow more than your main cat. So, for cost and effectiveness, I might be inclinded to choose the ceramic.

Also, placing cats nearer to the engine makes them perform more effectively.

Jan 23, 2012 | 02:33 PM

#22

Caboboy

Le Mans Master

Joined: Mar 2002

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From: Castro Valley Calif.

St. Jude Donor '03 thru '26

Post 3 addressed the issue. While certainly food for thought, the rest of this is really just aimless discussion.

Jan 23, 2012 | 04:15 PM

#23

STL94LT1

Race Director

Joined: Jan 2002

Posts: 12,263

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From: O'Fallon Missouri

This is not a stock engine.
From the OP'd sig.
383 4 bolt main (10.5 to 1) Balanced, Flat top pistons LT-4 Hotcam, Comp Cams ultra pro magnum steel 1.6 RRA, Trick Flow Heads Super 23 (195 runners) 62cc , SPL runners, Hi Flow intake base, 24# FIC Bosch 3 Injectors, Chipped, Melrose full headers, 3 way Main cat, Thrush 2 welded 2 Chamber LT 1 tips.

700r4 Trans built, 2500 Stall Lock up Convertor, 307 rearend.

403 H/P @ 5000
498 TQ @ 3000

If it is lean at idle and rich at 2500 rpms playing with the fuel pressure is not going to help both problems. Look into getting a good tune.

Jan 23, 2012 | 06:43 PM

#24

desertmike1

Melting Slicks

Joined: Aug 2008

Posts: 2,082

Likes: 50

From: Palmdale CA

Quote:

Originally Posted by STL94LT1

This is not a stock engine.
From the OP'd sig.
[If it is lean at idle and rich at 2500 rpms playing with the fuel pressure is not going to help both problems. Look into getting a good tune.

He is pushing High CO by .16% at higher RPM he is really close to passing, it will be interisting to see if the "race gas" helps

Jan 23, 2012 | 07:22 PM

#25

PLRX

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From: Riverside County Southern California

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Jan 23, 2012 | 08:27 PM

#26

Marv02

Thread Starter

Burning Brakes

Joined: Feb 2010

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From: California City Ca

I pulled the Chip and tryed to run the car Now I am getting code 44 it running to lean I try the Alcohol trick and see if it passes.

How much Alcohol should I use.

Jan 23, 2012 | 10:21 PM

#27

slickfx3

Safety Car

Joined: Oct 2008

Posts: 4,022

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From: Los Angeles CA

i'm surprised you passed visual with those long tubes

Jan 23, 2012 | 10:22 PM

#28

JrRifleCoach

Team Owner

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From: Freedom is never more than one generation away from extinction.

St. Jude '03 thru '24

I run the fuel load down to less than a 1/4 tank then add a pint of the denature stuff.
You might try two. Then after the test, filler up with pump gas.

& Good Luck