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» Northern California Ford Owners     » Automotive   » Tech Talk   » Magnapack exhaust and backpressure ?

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Author Topic: Magnapack exhaust and backpressure ?
Xplosive22
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Hey guys. I was considering getting the Magnapack 3" exhaust for my '07 GT, but I'm afraid that the diameter is too big for my engine output. The stock piping is already 2.5" with mandrel bends. Almost seems wasteful. However, they don't sell the mufflers by themselves.

Does anyone know if the 3" cat-back will negatively effect the performance of the car as opposed to just changing the mufflers?

Posts: 20 | From: Bay Area, CA | Registered: Feb 2008  |  :
*EPIK*
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quote:
Originally posted by Xplosive22:
Hey guys. I was considering getting the Magnapack 3" exhaust for my '07 GT, but I'm afraid that the diameter is too big for my engine output. The stock piping is already 2.5" with mandrel bends. Almost seems wasteful. However, they don't sell the mufflers by themselves.

Does anyone know if the 3" cat-back will negatively effect the performance of the car as opposed to just changing the mufflers?

U will most likely lose some low end torque with that setup...I would look in to just getting a 2 1/2 axle back system for your car. The factory piping on the 05+ GT's is already great from the factory.....

I found a Magnapack 2 1/2" catback for you, but it seems stupid to buy the whole catback when the factory piping is already 2 1/2" ....

http://www.texashotrods.com/storefrontprofiles/DeluxeSFItemDetail.aspx?sid=1&sfid=70952&c=50027&i=232080575

Do want want magnapacks because u want it real loud???

This bassani Race muffler axleback might work 4 ya??

http://www.latemodelrestoration.com/iwwida.pvx?;item?item_no=BE-4607SR5%20%20%20%20%201&comp=LRS

[ April 13, 2008, 05:22 AM: Message edited by: EPIK ]

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Posts: 6966 | From: 916 | Registered: Mar 2007  |  :
BlowN67
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here's some flows from a memeber here.
http://www.californiafords.com/ubb/ultimatebb.php?ubb=get_topic;f=5;t=055114

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Posts: 9809 | From: Home of LARD | Registered: Mar 2004  |  :
Xplosive22
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quote:
Originally posted by EPIK:
quote:
Originally posted by Xplosive22:
Hey guys. I was considering getting the Magnapack 3" exhaust for my '07 GT, but I'm afraid that the diameter is too big for my engine output. The stock piping is already 2.5" with mandrel bends. Almost seems wasteful. However, they don't sell the mufflers by themselves.

Does anyone know if the 3" cat-back will negatively effect the performance of the car as opposed to just changing the mufflers?

U will most likely lose some low end torque with that setup...I would look in to just getting a 2 1/2 axle back system for your car. The factory piping on the 05+ GT's is already great from the factory.....

I found a Magnapack 2 1/2" catback for you, but it seems stupid to buy the whole catback when the factory piping is already 2 1/2" ....

http://www.texashotrods.com/storefrontprofiles/DeluxeSFItemDetail.aspx?sid=1&sfid=70952&c=50027&i=232080575

Do want want magnapacks because u want it real loud???

This bassani Race muffler axleback might work 4 ya??

http://www.latemodelrestoration.com/iwwida.pvx?;item?item_no=BE-4607SR5%20%20%20%20%201&comp=LRS

Thanks for those links. I actually had a set of Flowmasters like that haha. Sold them off. I do want the car to be pretty loud. I used to not, but I met a guy with a Ford GT running straight pipes the other day and I changed my mind. [Smile]

I knew they had to have 2.5" Magnapacks. You're right the cat-back being a waste. I think they have the axle back listed on Magnaflow's website as "Coming Soon". I'm going to YouTube the Bassani though as see what those sound like.

I'll definitely avoid the 3" piping then and look for a cheaper axle back. That should save me a lot of cash.

Thanks guys I appreciate your help and advice.

Posts: 20 | From: Bay Area, CA | Registered: Feb 2008  |  :
*EPIK*
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quote:
Originally posted by Xplosive22:
quote:
Originally posted by EPIK:
quote:
Originally posted by Xplosive22:
Hey guys. I was considering getting the Magnapack 3" exhaust for my '07 GT, but I'm afraid that the diameter is too big for my engine output. The stock piping is already 2.5" with mandrel bends. Almost seems wasteful. However, they don't sell the mufflers by themselves.

Does anyone know if the 3" cat-back will negatively effect the performance of the car as opposed to just changing the mufflers?

U will most likely lose some low end torque with that setup...I would look in to just getting a 2 1/2 axle back system for your car. The factory piping on the 05+ GT's is already great from the factory.....

I found a Magnapack 2 1/2" catback for you, but it seems stupid to buy the whole catback when the factory piping is already 2 1/2" ....

http://www.texashotrods.com/storefrontprofiles/DeluxeSFItemDetail.aspx?sid=1&sfid=70952&c=50027&i=232080575

Do want want magnapacks because u want it real loud???

This bassani Race muffler axleback might work 4 ya??

http://www.latemodelrestoration.com/iwwida.pvx?;item?item_no=BE-4607SR5%20%20%20%20%201&comp=LRS

Thanks for those links. I actually had a set of Flowmasters like that haha. Sold them off. I do want the car to be pretty loud. I used to not, but I met a guy with a Ford GT running straight pipes the other day and I changed my mind. [Smile]

I knew they had to have 2.5" Magnapacks. You're right the cat-back being a waste. I think they have the axle back listed on Magnaflow's website as "Coming Soon". I'm going to YouTube the Bassani though as see what those sound like.

I'll definitely avoid the 3" piping then and look for a cheaper axle back. That should save me a lot of cash.

Thanks guys I appreciate your help and advice.

No problem bro...good luck
[patriot]

--------------------
=91 Notch:12.31@110 **Under Construction**
=05 CTS-V: 418rwhp/393rwtq=13.01@111


http://www.djepikmusic.com

Posts: 6966 | From: 916 | Registered: Mar 2007  |  :
Rigo5.0
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What about these:

http://store.summitracing.com/partdetail.asp?autofilter=1&part=MPE%2D14416&N=700+115&autoview=sku

And you can have an exhaust shop weld em' to the stock piping.

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Posts: 1454 | From: Kansas City | Registered: Jan 2005  |  :


 
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