People That put on A new MANI and DP
#2
Are you talking about the LSJ downpipe? If so I have an 07 ls which has the same manifold as the SS/SC but, and have a K&N SRI and an LSJ downpipe. I just recently put the downpipe on, and it doesn't seem to wheeze when you take it past 5K, and it feels a lot better from 3K to redline.
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