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Old 06-16-2006, 05:15 AM   #1
stumblinryan
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Default camshaft question

Gonna put a few goodies in my RS here soon: cobb CAI, cobb stage 2 headers, pulley system, and was also thinking about putting in the cobb "spicy" cams, and had a quick question. Will the camshafts require any sort of engine management, or should I be ok with the stock ECU? Any input would be greatly appreciated, thanks all.
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Old 06-16-2006, 08:48 AM   #2
Rally_wgn
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To clarify, are you installing Stage 2 heads or Cobb Equal Length Headers.

With headers the car should run fine without EM but the EM allows optimum operation.

With Stage 2 heads and cams EM I would think would be recommended.
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Old 06-16-2006, 11:58 AM   #3
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not sure about cobb's setup (search for anything that Matt Monson has said....he's a technical god) but my TWE stage 2 heads and cams (along with EL header and Hi-flow cat has had NO EM issues whatsoever.
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Old 06-16-2006, 02:53 PM   #4
stumblinryan
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Sorry, cobb EL headers, not stage 2 heads. Sorry for the confusion, but thank you for the reply
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Old 06-16-2006, 03:10 PM   #5
Matt Monson
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The headers will throw an 0420 cat inefficiency code, but the cams should not. And I personally don't run any EM on my car. The code doesn't effect driveability and the stock ECU does a very good job of compensating for the mods...
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