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Old 10-28-2013, 04:58 AM   #1
Bulldog3071

 
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Headers with a GMPP exhaust

All can I add just headers to my LS3 that has a GMPP exhaust system and if so which ones, will I need a tune, really not looking for power gains just a better sound thanks
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Old 10-28-2013, 06:16 AM   #2
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I add a set of TSP 1 7/8 headers and high flow cats to my LS3 ss and it sounds awesome. Really loud. Id reco a tune after to maximize hp gains. Mine dyno'd just under 420 rwhp with headers, cai and tune.
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Old 10-28-2013, 06:58 AM   #3
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Tune is a must.
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Old 10-28-2013, 07:52 AM   #4
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Quote:
Originally Posted by Bulldog3071 View Post
All can I add just headers to my LS3 that has a GMPP exhaust system and if so which ones, will I need a tune, really not looking for power gains just a better sound thanks
I would recommend checking out Stainless Power 1 7/8. They are a very nice set of headers that won't break the bank. You will need a tune with LT headers if you do not want a check engine light.
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Old 10-28-2013, 08:14 AM   #5
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If you are primarily interested in sound, just get Solo high flow cats. Way cheaper than headers, easy to install, no tune necessary, and they sound terrific. And as a bonus you will get a little performance boost as well.

Best bang-for-the-buck mod ever.
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Old 10-28-2013, 08:40 AM   #6
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Factory npp exhaust with 1 7/8 catless headers is still pretty quiet. If your looking for sound not performance then just get an axle back or cut outs. No need to tune for either of those either. For power headers are a must. I was unimpressed with the sound shortly after adding the headers to my npp though.
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Old 10-28-2013, 09:25 AM   #7
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I have a combo of Solo hi-flow cats and midpipes (no resonators) and a GMPP Track Pack ("off road" bullet style mufflers) axle-back and it is quite loud and aggressive sounding without being too over the top. Highly recommend.
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Old 10-28-2013, 09:35 AM   #8
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All thanks for the good inputs anyone know of a tuner with dyno in Greensboro NC
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Old 10-29-2013, 04:15 PM   #9
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Quote:
Originally Posted by Deezee View Post
Factory npp exhaust with 1 7/8 catless headers is still pretty quiet. If your looking for sound not performance then just get an axle back or cut outs. No need to tune for either of those either. For power headers are a must. I was unimpressed with the sound shortly after adding the headers to my npp though.
No to doubt you but mine with the fuse pulled is crazy loud
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