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Old 12-19-2012, 05:49 AM
7pilot 7pilot is offline
Location: i dunno
Join Date: Feb 2011
Posts: 323
Mein Auto: 90 Ford Tempo
Originally Posted by Tkaczuk View Post
TACH!!! Or Tachometer. None of them are super accurate. Swapped eta to 7k Tach in my e30 before the M52 swap and noticed it was off. Many others have said BMW Speedo's and Tach's are all just off. Friend with a E90 his is 7mph off. Eta/M52 is 5mph off.
I put an S52/ZF 320 in the E30M3. Decided to use a Dakota Digital tach signal converter until I get a six cylinder cluster.
The tach is 50% optimistic at idle and gets worse as the revs go up.
Watching the tach needle slam past 8k and then bounce is just silly.

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