DSM 4g63 half rpm problem

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lteeone
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Joined: Tue Oct 19, 2004 5:43 pm
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DSM 4g63 half rpm problem

Post by lteeone »

I have my 91 4g63 set up like the diyautotune website but my rpms show up half what it is. like the tach reads 1000 rpm and MS says 500. But if i change the constants to 2 cyl it in reads correct?

running MSnS-E with 24s9

any ideas?
-Scott-
1980 malibu 9.09 @151
1994 SS S10
2006 2500HD Duraslut
previous squirted rides 90 GSX eclipse MSnS, turbo'd SBC MSnS
aero
Helpful MS/Extra'er
Posts: 77
Joined: Fri Feb 11, 2005 3:14 pm

Post by aero »

I had that problem with the diyautotune site, but they changed the instructions to fix that quite a while ago. So as long as you used the updated instructions since february or so, it should work.

You don't have the two CAS signals backwards do you? I can't remember if that will cause the problem or not, but it might be worth swapping the wires to test.
lteeone
Helpful MS/Extra'er
Posts: 44
Joined: Tue Oct 19, 2004 5:43 pm
Location: kansas city
Contact:

Post by lteeone »

aero wrote:I had that problem with the diyautotune site, but they changed the instructions to fix that quite a while ago. So as long as you used the updated instructions since february or so, it should work.

You don't have the two CAS signals backwards do you? I can't remember if that will cause the problem or not, but it might be worth swapping the wires to test.
you where exactly right i had the two signals reversed... sorry such an old post but thought i should flollow up.

scott
-Scott-
1980 malibu 9.09 @151
1994 SS S10
2006 2500HD Duraslut
previous squirted rides 90 GSX eclipse MSnS, turbo'd SBC MSnS
aero
Helpful MS/Extra'er
Posts: 77
Joined: Fri Feb 11, 2005 3:14 pm

Post by aero »

Awesome, how does she run on the MS?
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