GXP vs SLS Exhaust Noise Difference
10-13-2021, 01:08 PM
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GXP vs SLS Exhaust Noise Difference
Does anyone know the difference between a 98-04 Seville SLS and a Bonneville GXP exhaust system? The Bonnie always sounds more aggressive(louder) in stock form even though they appear to be the same car mechanically with both running Northstar 4.6 V8s. Swapping some exhaust parts from a GXP to my SLS might be more economical than going aftermarket. Just looking for all options to consider. Wondering if the difference could be in resonators used.
10-13-2021, 11:11 PM
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Do you have a donor GXP around?
They're pretty hard to get a hold of.
They're pretty hard to get a hold of.
10-16-2021, 12:37 AM
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10-16-2021, 10:00 PM
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I pretty sure the Seville has a lot more sound deadening material everywhere.
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