94z lt1 to ls1 swap Tach is off

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06-22-2008, 03:04 PM

SSPerformance

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94z lt1 to ls1 swap Tach is off

factroy tach is off by about 50% so we went out and bought a Autometer with a light and taped off Pin # 10 white wire on the ecu and now the autometer is off 50% kinda stumped

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06-22-2008, 04:22 PM

hpmotorsports

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put the tach in 4cyl mode

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06-22-2008, 04:43 PM

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Thanks works perfect

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08-11-2008, 12:05 PM

ls1redline

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Is there anything that can be done to correct this on the in car tach. I am having same issue???

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08-11-2008, 03:20 PM

blazin

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I have the same problem I bought hp tuners it should have the capabilty to change it I hope!

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08-11-2008, 04:56 PM

LS1MCSS

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The pcm can be programmed for an 8 cylinder output.

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