smittydhc Posted October 27, 2005 Share Posted October 27, 2005 Is there any word if the optional HKS exhaust will add any additional HP? Also wondering if there are any other performance parts on the way for the IS. Quote Link to comment Share on other sites More sharing options...
bartkat Posted October 27, 2005 Share Posted October 27, 2005 Is there any word if the optional HKS exhaust will add any additional HP? Also wondering if there are any other performance parts on the way for the IS. ← Word is that the HKS will be available in January. However, if my IS350 had any better performance I don't know if I could stand it. And it ain't even broke in yet. Quote Link to comment Share on other sites More sharing options...
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