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06-03-2010, 01:27 AM
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#1 |
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One shot, one kill...
Drives: 2010 Camaro 2SS/RS M6 Join Date: Apr 2010
Location: Studio City, CA
Posts: 35
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Doug Thorley headers question
Hey guys, I have been thinking of ordering a set of doug thorley shorty headers for my ss. Ive searched all of the forum but cannot find anyone that has a dyno for the V8. I know some of you say its a waste of money to buy shorties but I want to keep my warranty like others. If anyone has these headers that have noticed any power increase on their V8 or have a dyno sheet please post your input. Semper Fi...
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06-03-2010, 01:32 AM
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#2 |
          
Drives: My wife crazy with my C5 usage. Join Date: Apr 2009
Location: DFW
Posts: 6,558
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I haven't seen or heard of anyone getting more than 2hp/5tq from adding a set of shorty headers. Honestly, my car had more of a swing than that in stock trim in back to back pulls on a dyno. If you set on adding shortys, I'd go with either BBK or DT.
Happy hunting
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 UNDER CONSTRUCTION......again...... |
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06-03-2010, 03:21 AM
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#3 |
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Drives: 2006 Dodge Charger / 2SS IOM Join Date: Dec 2008
Location: United Kingdom
Posts: 1,640
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shorties isnt the way to go. most of the power that comes with longtubes comes from the high flow cats. and with shorties u keep your stock cats so u wont gain must over stock.
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06-03-2010, 09:22 AM
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#4 |
 
Drives: '69 SS Convertible Join Date: May 2009
Location: DFW, TX
Posts: 7,111
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I would consider passing on the shorties but look into spending that money on a set of High Flow cats. I think you'll see more power from that mod than the shorties.
SOLO just came out with some, JBA I think has some, and so does Magnaflow.
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-2010 Camaro 2SS | M6 | VR w/White Stripes | 1 3/4" KOOKS - 3" Magnaflow | LPE 3.91 gears | ADM tuned | Halltech w/ADM Scoop | Spohn/BMR Trailing Arm/Toe Rod | BC Coilovers| Pedders FE4 ZL1 swaybars | Cradle/Diff/Radius Rod bushings | VMax TB | Morimoto Projectors | MGW shifter | Red Calipers
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06-03-2010, 09:57 AM
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#5 |
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One shot, one kill...
Drives: 2010 Camaro 2SS/RS M6 Join Date: Apr 2010
Location: Studio City, CA
Posts: 35
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Won't the high flow cats throw codes?
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06-03-2010, 09:59 AM
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#6 |
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Drives: 2006 Dodge Charger / 2SS IOM Join Date: Dec 2008
Location: United Kingdom
Posts: 1,640
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yes it will so you will need a tune. or get a handheld and clear the code everyday.
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06-03-2010, 10:04 AM
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#7 |
Drives: 2010 2SS/RS ; 1970 Firebird Formula Join Date: Jan 2010
Location: West Palm Beach
Posts: 1,252
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Not according to SOLO. They just came out with high flow cats that are not throwing a code
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06-03-2010, 11:02 AM
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#8 |
 
Drives: 2006 HHR LT, 2010 2SS/RS IOM Join Date: Mar 2009
Location: Wheatfield, NY
Posts: 204
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Testing for them right now, no codes so far with the SOLO HF cats.
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06-03-2010, 12:54 PM
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#9 | |
 
Drives: SOLD/2SS/RS Painted Rally Stripes Join Date: Apr 2009
Location: Oregon
Posts: 325
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Quote:
Will the HF Cats affect the warranty? |
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06-03-2010, 01:01 PM
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#10 |
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Drives: 2010 2SS/RS ; 1970 Firebird Formula Join Date: Jan 2010
Location: West Palm Beach
Posts: 1,252
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Solo ran a dyno and picked up 22rwhp and 25 rwtq with just the HF cats and no tune. Should pick up more with a tune.
Not throwing any codes so they should be fine as far as warranty goes. Plus they bolt on in place of the existing stock cat mid pipes. So they are easy to swap out with stock. If necessary. |
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06-03-2010, 01:16 PM
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#11 | ||
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Drives: 2006 HHR LT, 2010 2SS/RS IOM Join Date: Mar 2009
Location: Wheatfield, NY
Posts: 204
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Quote:
Quote:
 We are waiting on a tune appointment to see what else we can gain!
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06-03-2010, 01:41 PM
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#12 |
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Drives: 2010 2SS/RS ; 1970 Firebird Formula Join Date: Jan 2010
Location: West Palm Beach
Posts: 1,252
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I can't wait to see what the tune adds to these things. I think they are getting around 55 rwhp out of them on the G8 with a tune.
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06-03-2010, 02:41 PM
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#13 |
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Account Suspended
Drives: White 2010 RS/SS Join Date: Dec 2009
Location: San Diego
Posts: 672
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I would just buy the JBA Hi-Flow mids with cats. They make more RWHP than any shorty headers and they are pretty inexpensive.
http://www.google.com/products?hl=en...-8&sa=N&tab=wf DW |
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06-03-2010, 03:04 PM
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#14 |
 
Drives: 2010 SSRS, Victory Red, 6 speed Join Date: Mar 2010
Location: Hollister, Ca
Posts: 70
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I've installed DT shorty's and hi-flow cats along with a magnaflow x pipe and Diablo Predator tune, Halltech CAI and so far no codes, this with about 500 miles on the cats. No dyno numbers as yet but I will say that the SOP meter indicates a stronger mid/top end pull, especially after installing the cats. Also the exhaust note definitely changed with the cat's, much raspier with more pronounced popping on decel. While long tubes will ultimately extract more HP I'm pleased with the combo I have.
SC up next...JT |
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