This factory-style modification allows you to toggle the auxiliary fan to high speed when the AC is on, improving AC performance at idle. The E30 comes with a fog lamp switch, which in some markets is a double switch. By using the alternate switch (part number 61311380312) and adding two connectors to the existing...
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One major quality-of-life improvement when performing a valve adjustment on an E30 is the ability to use the starter instead of a wrench and socket on the crankshaft to rotate each cam lobe away from the rocker for adjustment. Luckily, the diagnostic port on an E30 can trigger the starter by simply bridging pins...
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This article serves to provide nuanced detail for those looking to refresh their OEM setup (Denso with early style dryer in particular); one of the biggest roadblocks is that the OEM parts catalogue (ETK) is often wrong. Also, reference to this article for how to recharge the AC system: How to recharge the AC...
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Per the BMW E30 Factory Manual:   Per Bentley manual: To set between 0.20mm and 0.60mm:   Failure Methods:...
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If you’re in the market for a fog relay—particularly the now no longer available (NLA) part number 61311374631—here’s a...
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Here are some nuances to understand when picking E30 M20 accessory belts. First reference this to understand how some...
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