Exhaust | Chevy Astro and GMC Safari Forum

Which of the two upstream oxygen sensors does PCM use?

5

364

astro/s10 same egr pipe?

5

137

by bryancraftyhands

Stock exhaust diameter

2

21

7K

by sixsix

anyone ever try building your own headers?

7

483

by justbegoodtoher

I did a thing

5

615

Catalytic converter rubber isolator mount….what are you using?

5

381

by gwd

Direct fit catalytic converter install

5

1K

by VannyD

Shaking while driving

3

352

by gwd

02 sensor

2

377

by Sailing_Faith

Smog check locations

2

227

What caused our bad catalytic converter?

15

839

by sixsix

Replacing the gasket between the cat and muffler.

5

433

1994 Silverado 5.7 shorty headers

0

259

1991 Muffler - AWD vs RWD?

1

295

Muffler

9

754

Replacement headers/manifold 1986 cl 4.3

1

221

Is it super charged

5

1K

Headers - Say it isn't so!!!

5

942

Y-Pipe Was SPLIT!

13

861

Head scratcher for aftermarket Muffler

2

23

3K

1994 Astro Van Rectangular Engine Air Filter Housing Hose outlet in rear of Housing- Help

1

414

Has anybody add a catalytic converter protection plating or expanded metal to cover the vulnerable area.

9

2K

by GasTungstenArc

What are the chances my cat should be replaced?

3

654

quick question about welding exhaust

2

20

2K

by GasTungstenArc

Exhaust stuff I ordered for spring

7

833

Smaller but efficient muffler

18

1K

PASSING EMISSIONS NOx SNIFF TEST WITH EGR REMOVED

7

1K

by stent

emissions mission 2011

6

2K

Looking For a Quiet Muffler

12

1K

Can a worn out muffler cause P0101 and P0102 codes?

8

2K

Someone used rams horn style exhaust manifolds on an AWD with V8

2

569

Any suggestions for removing this little #£(!&!?

11

1K

Waiting for 1 part

14

917

Muffler rattling diagnosis

2

39

5K

HEADERS!! HEADERS!! HEADERS!!

2 3 4

64

13K