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65blackfleetside · 10-25-2019, 11:59 AM

Thanks for the Heads up guys. I will try flipping the dip switch on the tach from 4 cylinder to 8 and go back to the 1000 ohm resister.

Question about the factory ECM tach settings:
What does the factory setting on the Gen III ECM 4 cylinder or or 8 cylinder?

Why does every LS forum that I read including the Autometer website say to set the tach to 4 cylinder?

10-25-2019, 11:59 AM	#13
65blackfleetside Registered User Join Date: Nov 2015 Location: Central Florida Posts: 215	Re: Tach reads 1/2 of what it should Thanks for the Heads up guys. I will try flipping the dip switch on the tach from 4 cylinder to 8 and go back to the 1000 ohm resister. Question about the factory ECM tach settings: What does the factory setting on the Gen III ECM 4 cylinder or or 8 cylinder? Why does every LS forum that I read including the Autometer website say to set the tach to 4 cylinder? __________________ current ride 1951 AD Chevy 5 window 2004 LS Gen 3 [/B] 1965 fleetside Sold