Most E30 owners install a Signature Motoring performance intake kit for
around 9HP gain. Cost is a mere $150 or so, best value per HP gain in the
E30 line. Install time if only about 30-45 minutes in most applications. I
have one in my 89 325i cabrio. Crazy nice sound. Most regular guys install
a Signature Motoring performance intake kit for around 9HP gain in the E30.
Install time is about 30 min, maybe 45 for two left hands, LOL. Great sound
and extra performance for around $160.
2012 TM concept30 Street
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