Catback installation

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Dec 31, 2009 | 05:24 AM

C5_Luvr

Thread Starter

2nd Gear

Joined: Dec 2009

Posts: 2

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Catback installation

I'm planning of installing a magnaflow catback in my C5 and am wondering do I need to have the computer re-programmed once the installation is completed?

Dec 31, 2009 | 06:36 AM

Daddyrama31

Drifting

Joined: Apr 2008

Posts: 1,510

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From: Ga

Not necessary

Dec 31, 2009 | 09:25 AM

jrose7004

Team Owner

Joined: Mar 2004

Posts: 58,490

Likes: 1,811

From: Oklahoma City OK

C6 of Year Finalist (appearance mods) 2019

Nope. Now you would if you installed Longtubes.

Dec 31, 2009 | 10:19 AM

Dave1998

Safety Car

Joined: Jul 2004

Posts: 4,806

Likes: 70

From: Rochester MN

Quote:

Originally Posted by Daddyrama31

Not necessary

Dec 31, 2009 | 11:46 AM

C5_Luvr

Thread Starter

2nd Gear

Joined: Dec 2009

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C5 exhaust

Is it wise to get a used catback from craigslist if I don't want to spend a lot of money?

Dec 31, 2009 | 12:34 PM

~~JW Motorsports~~

Banned Scam/Spammer

Joined: Feb 2007

Posts: 50,093

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From: Oklahoma City

St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16-'17,'19,'22

Yes just check it out before you buy. I bought my first one used on this forum.

Jan 1, 2010 | 10:15 AM

rws.1

Race Director

Joined: Jul 2004

Posts: 16,795

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From: Lake Havasu City, AZ

No reprogramming required.
Used ones go for about 50% of the list on new ones...

Jan 2, 2010 | 12:36 AM

c5blkvetteguy

Burning Brakes

Joined: Oct 2008

Posts: 1,062

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From: Minnesota City MN

You will also need to get the rear of the car very high to take the old set-up off, or just cut it off *** I did.

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Jan 2, 2010 | 10:00 AM

Cybermind

Melting Slicks

Joined: Apr 2009

Posts: 2,479

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However, the Magnaflow instructions do recommend to disconnect the battery. They say it will allow the computer to reset or recalibrate itself to the new free flowing exhaust. Whether there is any truth to this or not, I don't know but I did disconnect my battery during the installation for safety sake.

Jan 2, 2010 | 10:17 AM

#10

Blow Torch

Melting Slicks

Joined: Nov 2003

Posts: 3,011

Likes: 9

From: Dublin GA

Battery unhooked or not, the computer has the ability to compensate for small changes in airflow. The O2 sensors simply tell the pcm it needs more fuel and it provides it. If the increased demand continues, the LTFTs change to compensate.

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