Stock C5 catback power capabilities?

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Jun 11, 2008 | 05:14 PM

Novakain1970

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Racer

Joined: Oct 2007

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From: Long Island NY

Stock C5 catback power capabilities?

How much power can you put through a stock C5 catback system.....or better yet how much power does it rob?

I have long tubes through a catless x pipe and Z06 ti's at the moment. Thought about goin for the sleeper look and slapping the original catback back on (quieter and less flashy looking)

but will the car just look like a sleeper or actually fall asleep

Just curious

Jun 11, 2008 | 07:13 PM

BWF07

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From: Palm Harbor not far from Sebring Florida

St. Jude Donor '11

Oldtimer

I do think it will go to sleep, but you are going to lose some. First you are adding weight and the stock system is more restrictive then the Z06 TI system.

Jun 11, 2008 | 07:32 PM

cruzc5frc

Racer

Joined: Jul 2007

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From: Illinois

just coming from stock c5 exhaust to american racing headers with offroad X, corsa pace car catback, you will loose pretty significant amt of power

Jun 11, 2008 | 07:37 PM

LF97C5Vette

Burning Brakes

Joined: Mar 2006

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From: Tacoma WA

Quote:

Originally Posted by cruzc5frc

just coming from stock c5 exhaust to american racing headers with offroad X, corsa pace car catback, you will loose pretty significant amt of power

Has anyone ever actually dyno'd this difference?

-Dan

Jun 11, 2008 | 07:59 PM

Novakain1970

Thread Starter

Racer

Joined: Oct 2007

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From: Long Island NY

Quote:

Originally Posted by LF97C5Vette

Has anyone ever actually dyno'd this difference?

-Dan

Yeah id like to know myself

Jun 11, 2008 | 08:07 PM

SLPRC5

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Joined: Aug 2003

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From: American Canyon Lethal Injection

I staid with the Ti's on my coupe. My car is a sleeper until I get on it and the Ti's bark and growl. The Ti's are connected to LG LT headers, hi-flow cats and "X" pipe. All my MODs are in my profile..I'm at 530RWHP.

Jun 11, 2008 | 08:09 PM

SLPRC5

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From: American Canyon Lethal Injection

Quote:

Originally Posted by Novakain1970

Yeah id like to know myself

As mentioned the stock C5 mufflers are restictive. The Ti exhaust has a very good flow and sound at WOT. Plus they are heavier...stay with your Ti exhaust.

Jun 12, 2008 | 12:34 AM

LF97C5Vette

Burning Brakes

Joined: Mar 2006

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From: Tacoma WA

Quote:

Originally Posted by SLPRC5

As mentioned the stock C5 mufflers are restictive. The Ti exhaust has a very good flow and sound at WOT. Plus they are heavier...stay with your Ti exhaust.

Restrictive for what, a Twin Turbo LS7 at 9 PSI, or restrictive for a 400hp LS1 /w Long tubes and a cam?

I'm going down next week to my tuner - he has a stock system lying around. I'm going to toss it on and see what my car sounds like with a Stock System. Right now with Heads/Cam/Intake/ Long Tubes/ etc... 400whp and B&B Bullets it's around 130dB and Ridiculously loud...

I'm curious - if i put the stock exhaust on, how loud it will still be, and I may talk him into running a before and after dyno to see if there's any REAL hp loss on a 400whp NA setup...

-Dan

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Jun 12, 2008 | 02:56 AM

Novakain1970

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Racer

Joined: Oct 2007

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From: Long Island NY

Post your results after you dyno the car

Jun 12, 2008 | 07:55 AM

#10

silversport

Melting Slicks

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From: Chicagoland Illinois

Bill

Jun 12, 2008 | 08:01 AM

#11

Eddie 70

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From: Lenoir City Tennessee

Ci 6, 8 & 10 Veteran

St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15

Quote:

Originally Posted by LF97C5Vette

The before and after dyno results would be great. I am sure you will lose some but it would be interesting to see exactly what it would be on a modified car.

Jun 12, 2008 | 08:04 AM

#12

Casem1

Burning Brakes

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From: Derry NH

Quote:

Originally Posted by LF97C5Vette

Has anyone ever actually dyno'd this difference?

-Dan

I doubt the difference in power would be noticeable...
There is a weight difference (26 lbs IIRC) but then again, most drivers in the US could stand to lose that 26 lbs from their own catbacks

Jun 19, 2008 | 12:58 AM

#13

Novakain1970

Thread Starter

Racer

Joined: Oct 2007

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From: Long Island NY

LF97C5VETTE ever get around to getting the dyno #'s on the stock C5 exhaust compared to your aftermarket system????

Jun 19, 2008 | 09:42 AM

#14

gunnerrun

Racer

Joined: Nov 2007

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Catback

Have been thinking about going to Ti's however the several tuners I've spoken with advise about a 2 hp gain. Seems fair to conclude the opposite would also apply.

Jun 19, 2008 | 01:33 PM

#15

Novakain1970

Thread Starter

Racer

Joined: Oct 2007

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From: Long Island NY

Quote:

Originally Posted by gunnerrun

Have been thinking about going to Ti's however the several tuners I've spoken with advise about a 2 hp gain. Seems fair to conclude the opposite would also apply.

I have the Ti's on my car and they do work great but i really need some hard facts about the Stock C5 catback, not the Z06 Ti catback

Jun 19, 2008 | 01:48 PM

#16

Ttop34

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Joined: Jun 2004

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From: Dallas Texas

When I didn't have cats on and before the LS6 intake I dynoed with the cutouts shut then open. The Ti was robbing 10hp with full exhaust, pulley and vararam.

Jun 19, 2008 | 02:06 PM

#17

Novakain1970

Thread Starter

Racer

Joined: Oct 2007

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From: Long Island NY

with the Z06 TI's

Jun 22, 2008 | 02:42 AM

#18

LF97C5Vette

Burning Brakes

Joined: Mar 2006

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From: Tacoma WA

Quote:

Originally Posted by Novakain1970

LF97C5VETTE ever get around to getting the dyno #'s on the stock C5 exhaust compared to your aftermarket system????

No I didn't... had a 1.5 Hour drive and didn't get to my Tuner's shop till about 6:30pm. He was anxious to get home, so we just threw the exhaust on and called it good. It's funny how quiet the stock exhaust system is compared to the bullets. It sounds much like the Ti's, except a little quieter, and doesn't have that "Tinny" sound. (Still decent sounding at WOT, and silent otherwise)

I'm thinking about trying some cut outs or something...

-Dan

Jun 22, 2008 | 05:11 PM

#19

Jnape

Burning Brakes

Joined: Mar 2008

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From: Middle Of Kali CA

Quote:

Originally Posted by LF97C5Vette

I'm thinking about trying some cut outs or something...

-Dan

I like these Cutouts. http://209.61.166.115/ProductDetails...roductCode=DMH

Their is a U-Tube Vid of them. Nice......

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