09-24-2009, 07:31 PM | #1 |
Pat @ ADM PERFORMANCE
Drives: CGM SS/RS M6 Join Date: Aug 2009
Location: Prosper, TX
Posts: 506
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Magnaflow 3" cat back dyno results!!
The setup has the most beautiful sound but as Andy and I suspected it will net you NOTHING in terms of power.
BASELINE PULL 4:16 pm NETed 368HP / 375TQ (STOCK CALIBRATION with 800 miles) 3" EXHAUST PULL 4:58 NETed 369HP / 373TQ Coming up tomorrow, OFF ROAD Down Pipes make a pull. Then install ADM's Free Flow Intake make a pull. After we have documented these changes on the STOCK CALIBRATION we will adjust the timing tables and dial in the PE to get the most from all these modifications. For those looking for the best exhasut setup available the 3" Magnaflow is the bomb and it has a wonderful tone. I have a couple videos and a graph but I'm too damn lazy to load them tonight. I will get all the PRETTY STUFF loaded tomorrow ! 1st Pull - Stock Calibration Stock Exhaust BASELINE 368/375 2nd Pull - Stock Calibration with 3" Magnaflow full catback 369/373 3rd Pull - Stock Calibration with 3" Magnaflow (HOT LAP PULL) 369/372 FOUND THE MOTIVATION TO GET IT TOGETHER FOR Y'ALL Stock Calibration with Stock Exhaust Stock Calibration with Magnaflow 3" full catback with x-pipe Exhaust shot with a few revs in the garage.
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"old age and treachery will always overcome youth and ambition" author unknown "There are two types of racers: cheaters...and losers." Smokey Yunick Last edited by freemaSSon; 09-24-2009 at 10:34 PM. |
09-24-2009, 07:36 PM | #2 |
Voice Of The Voiceless
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Cool, please load them (at your convenience of course). I want to hear what it sounds like.
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09-24-2009, 08:55 PM | #3 |
Drives: 98 WS6 Join Date: Jul 2009
Location: NC
Posts: 236
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We suspected this as well. We installed the 2.5" Magnaflow system a few weeks ago and it really did not gain much if anything at all. I wonder if the L99's gain more with a catback ?
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09-24-2009, 09:00 PM | #4 |
TTSS
Drives: 2010 Black on Black SS L99 Join Date: Sep 2009
Location: Cordova TN
Posts: 48
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I have the L99 and installed the same 3 inch cat back. I am having it tested tomorrow. I will post and let you know. I have a baseline of 342 rwhp with a Roto Fab CAI. Should be interesting. Magnaflow claims 12-14 hp gain on the 2.5 inch cat back system.
The sound is sweet though! Super easy install, but I did have access to a lift. Took me and a friend and hour and a half. |
09-24-2009, 10:05 PM | #5 |
Drives: Anything I want Join Date: Oct 2008
Location: DfW - Texas
Posts: 5,405
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Tommorow........YOU WILL SEE GAINS WITH VIDEO AND PICTURES
Andy |
09-24-2009, 10:11 PM | #6 |
Pat @ ADM PERFORMANCE
Drives: CGM SS/RS M6 Join Date: Aug 2009
Location: Prosper, TX
Posts: 506
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1st Pull - Stock Calibration Stock Exhaust BASELINE 368/375 2nd Pull - Stock Calibration with 3" Magnaflow full catback 369/373 3rd Pull - Stock Calibration with 3" Magnaflow (HOT LAP PULL) 369/372 Stock Calibration with Stock Exhaust Stock Calibration with Magnaflow 3" full catback with x-pipe Exhaust shot with a few revs in the garage.
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"old age and treachery will always overcome youth and ambition" author unknown "There are two types of racers: cheaters...and losers." Smokey Yunick Last edited by freemaSSon; 09-24-2009 at 10:34 PM. |
09-24-2009, 10:57 PM | #7 |
NOICE!!! ™
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Sounds good
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09-24-2009, 11:10 PM | #8 |
Drives: 2010 2ss ss/rs abm, 2016 2ss/rs hbm Join Date: Feb 2009
Location: N. Phx, Az
Posts: 1,332
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unless your making over 500hp the 3" is overkill and you wont see much gain, the 2.5 is the way to go. if your going to build some real power then go with a 3" and do a custom tune and make some real power.
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09-25-2009, 07:30 AM | #9 |
Drives: holden commodore Join Date: Jul 2008
Location: Saudi Arabia
Posts: 128
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That's why I don't like the 3" , the 2.5'' would make difference on the dyno even with stock Calibration (tested on some cars) but I still can't understand why is everybody interested in the 3" !!!
BTWthis is the best sound I've ever heard on the new Camaro .
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09-25-2009, 07:34 AM | #10 |
Okie doke
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Honestly, I don't think there is much to gain with any aftermarket catback. The stock design is pretty much a straight through design and not much of a restriction at all. The small gains or losses one would see by going aftermarket shouldn't be a deciding factor in your choice. It is more for looks and sound and the magnaflow systems have both
Crowley
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09-25-2009, 07:41 AM | #11 |
Drives: 2010 Camaro 2SS/RS Join Date: Mar 2008
Location: S.W. Florida
Posts: 6,294
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The L99 will probably be the one making gains with a catback. The L99's mufflers are different from the LS3's. The LS3's mufflers are a straight through design while the L99 mufflers are crazy looking on the inside to deal with the AFM noises.
The L99 also comes with 2 extra resonators. I have seen some dyno sheets where guy have made decent gains by going muffler delete. It will be interesting to see the dyno results from some other catbacks. This (no gain) may be limited to just the Magnaflow catback? |
09-25-2009, 05:22 PM | #12 |
Love's to Detail
Drives: 2010 SS,97silverado/08crewcab Join Date: Oct 2008
Location: Greenville SC.
Posts: 1,421
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Its hard to tell on a clip, but are they much sound difference in the 3" vs the
2.5 magnaflows? |
09-25-2009, 06:17 PM | #13 |
Pat @ ADM PERFORMANCE
Drives: CGM SS/RS M6 Join Date: Aug 2009
Location: Prosper, TX
Posts: 506
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The point to my post and thread was that not a single exhaust system will net any significant improvements and that an OFF-ROAD pipe would net the gain. The Magnaflow 3" is the LEAST RESTRICTIVE mufflered system available and it provided NOTHING REALLY on the STOCK CALIBRATION. It could net someting with tuning the timing and PE.
Andy ran short on time in the shop and my car got shoved to next week for toying with the exhaust and air box for dyno testing on the STOCK CALIBRATION and then seeing what can be gained in the timing and PE fine tuning.
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"old age and treachery will always overcome youth and ambition" author unknown "There are two types of racers: cheaters...and losers." Smokey Yunick |
09-25-2009, 07:08 PM | #14 |
TTSS
Drives: 2010 Black on Black SS L99 Join Date: Sep 2009
Location: Cordova TN
Posts: 48
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Here are my results with a Roto Fab CAI comparison to the Roto Fab+Magna Flow 3" cat back on a L99. One graph is a low to best comp and the second is a best to best comp. The avg was a 10 hp gain.
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