Which Magnaflow is this? - Pontiac G8 Forum: G8 Forums - G8Board.com
Exhaust Tech Headers, Catbacks, Mufflers, lack of mufflers

 
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post #1 of 18 (permalink) Old 02-23-2013, 04:16 PM Thread Starter
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Which Magnaflow is this?

Just bought this car. I was a bit mislead that this had Borla in it but whatever. I'm thinking Catback Magnaflow right?






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post #2 of 18 (permalink) Old 02-24-2013, 09:41 AM Thread Starter
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:/ am I looking at stock? Lol.

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post #3 of 18 (permalink) Old 02-24-2013, 09:50 AM
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Garage
what do the mufflers and tips look like?


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post #4 of 18 (permalink) Old 02-24-2013, 10:16 AM Thread Starter
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Sorry cell pics aren't the best. It's my understanding that between the two or so types of magnaflow available (cat/axel) the muffler/tips will look the same no?










Thanks for the help.

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post #5 of 18 (permalink) Old 02-24-2013, 10:19 AM Thread Starter
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Also the previous owner did tell the dealership it was a Borla. Is there a possibility they mixed pieces parts from two brands?

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post #6 of 18 (permalink) Old 02-24-2013, 10:21 AM Thread Starter
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Gotta be a catback no?

MagnaFlow 16795 Cat Back Exhaust System

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post #7 of 18 (permalink) Old 02-24-2013, 10:22 AM
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I think there are three magnaflow catbacks for our cars, 2 systems with 2.5" and 3" diameter tubing options.
Yours looks like one of the 2.5" setups since it has quad tips. The difference between th two is the "street series includes a mid muffler and the other one does not.

2009 G8 GT
Kooks LT's 1 7/8", catted X pipe to GXP mufflers
Rotofab intake, Avant Garde staggered summer wheels
Pat G tuned

2003 Corvette coupe
6spd Manual, lowered on C6 wheels
Long tube headers, Corsa catback
Heads/cam, Hurricane intake



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post #8 of 18 (permalink) Old 02-24-2013, 10:29 AM Thread Starter
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Yep perfect thanks!

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post #9 of 18 (permalink) Old 02-25-2013, 11:36 AM
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Looks like the Magnaflow 16795 catback. Not a bad system but it does drone on some cars.

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post #10 of 18 (permalink) Old 02-25-2013, 01:11 PM Thread Starter
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Yep the drone is pretty bad when the AFM kicks in at about 65-70 mph. Guess I'm going to have to avoid the freeway and disable that!

I'm having difficulty finding anyones actual gains on this system. What would typically be expected 5-10hp? if that lol?

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post #11 of 18 (permalink) Old 02-25-2013, 01:21 PM
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on a stock car, maybe 5, with factory manifolds.

i run the same exhaust with kooks mids / hfc.

jason


02 powerstroke - slightly modded
04 gto - stroked
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post #12 of 18 (permalink) Old 02-25-2013, 01:24 PM Thread Starter
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I guess theres a chance some other parts are aftermarket. What am I looking for?

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post #13 of 18 (permalink) Old 02-25-2013, 03:24 PM
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check and see if the exhaust mainfolds are stock, or
aftermarket.

jason


02 powerstroke - slightly modded
04 gto - stroked
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post #14 of 18 (permalink) Old 02-25-2013, 03:27 PM Thread Starter
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Oh that should be fun to see. Love how low these sit lol.

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post #15 of 18 (permalink) Old 02-26-2013, 10:52 AM
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Quote:
Originally Posted by RoflsupG8 View Post
Yep the drone is pretty bad when the AFM kicks in at about 65-70 mph. Guess I'm going to have to avoid the freeway and disable that!

I'm having difficulty finding anyones actual gains on this system. What would typically be expected 5-10hp? if that lol?
You might already know this, but if you put you car into manual mode it prevents AFM from engaging.

Vararam, TSP LS3 cam, DOD delete, Livernois dual springs, Comp trunion kit, 1 7/8 Kooks, Ultra-flows, Holley valve covers, MNM catch can, tuned by Mike Norris Motorsports

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post #16 of 18 (permalink) Old 02-26-2013, 10:58 AM Thread Starter
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Yep. Does it disable in sports mode as well? Cant recall. I guess on he freeway manual mode isnt too annoying so that's something ill have to consider.

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post #17 of 18 (permalink) Old 02-26-2013, 11:12 AM
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If it is magnaflow it should say so somewhere on the muffler (mine does) or on the X pipe/connection pipe (mine does)

I don't think drone is so bad w/ the magnaflow....I have since turned AFM off after adding headers tho

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post #18 of 18 (permalink) Old 02-26-2013, 11:27 AM
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Quote:
Originally Posted by OrngG8 View Post
You might already know this, but if you put you car into manual mode it prevents AFM from engaging.
This isn't always the case. There was a thread about it a while back. I can't remember is the OP in that thread had a tune but used engineering mode to confirm that his car was enabling DOD while in manual mode. I checked it on my car and was also able to confirm that it would enable DOD in manual mode. I have a tune though so that is why I'm not sure if this is something that was altered in the tune.

-2009.5 MSM Premium GT-

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