slow tach question

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Apr 20, 2004 | 12:07 PM

MNSS

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Staging Lane

Joined: Jan 2002

Posts: 89

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From: Minnesota

slow tach question

Just installed a moser 12 bolt and programmed my speedo with edit last night. After a little driving I could not help myself and ran the gears. Needless to say my 4.11's are much more interesting than the 342 I had in my m6. There was one problem, I kept banging my rev limiter which is set at 6800, but watching the tack it was coming on right at stock levels 6200, at least according to the needle. My question is, is my tach that off or what. I only have about 400 to the wheels any ideas would be great. I double checked my program and rev limiter is set at 6800, I guess I can log a run or two and find out using my auto tap as well .

Apr 20, 2004 | 03:54 PM

Zero_FactiX

On The Tree

Joined: May 2003

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From: Indiana

What about if you take it up to 6800 slowly and not run it up so fast. My tach won't keep up in 1st gear at all, I have to shift about when the tach says 5700 with the stock rev limiter.

Apr 20, 2004 | 04:16 PM

Tranzor

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Joined: Aug 2003

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From: Kent WA

The tach's gonna be slow in 1st gear especially... it's still somewhat slow in 2nd, but by 3rd it will be pretty accurate. This is how I solved the problem:

Apr 20, 2004 | 04:31 PM

98Blubrd

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From: Cape Coral, FL

I second Tranzor_Z28's motion. I would definately recommend a Raptor or Harlan shiftlight or any shiftlight for that matter. It keeps you more consistant anyways. The stock tach is way to slow in the first couple gears. Do not trust the stock tach.

Apr 20, 2004 | 04:31 PM

NataSS Inc

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From: Estero, FL

do as above with a shift light or get an autometer tach.

Apr 22, 2004 | 12:03 PM

MNSS

Thread Starter

Staging Lane

Joined: Jan 2002

Posts: 89

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From: Minnesota

Yea, your right....I just never had that problem before with the 342's but its quite a change going to the 411's , you have to learn to drive all over again! Thanks for the replies