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Message: <blockquote data-quote="525iBoy" data-source="post: 5230" data-attributes="member: 1183"><p>Just wanted to share w/your guys.  I have an e34 with the 2.5 m20 engine and replaced the spark plug with Bosch Platinum last year/15,000kms ago.thought I would give my car a tune-up/check the plugs as it's been a year.  Replaced plugs with Bosch Super 4s (4 tip plugs) at about 70 for 6 last year and was amazed at the difference these plugs made!!The car is so much smoother and a lot more powerful.  idle is better and so is start-up.  My prev Platinum plugs were still is pretty OK condition so I think the diff was due to the Bosch Super 4s. incidentally I also changed to Bosch Super 4s on my other car an alfa GTV and the results were also similar, smoother idle, better revs etc.Hopefully my fuel consumption will improve too. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite7" alt=":p" title="Stick Out Tongue    :p" loading="lazy" data-shortname=":p" /></p></blockquote><p></p>