eflores

First and foremost, i searched...a lot
i found nothing on how to install the SGI-5E in my car after the T56 swap
i called Dakota Digital. they were friendly but ultimately useless.

The problems i encountered were utilizing the trans output to drive the VSS Buffer
although DD says this can be done, it cannot.

If you read no farther than this please understand you must completely remove your VSS buffer if you want a working speedometer, cruise, and PCM signal.

the SGI-5E cannot modify the signal low enough to feed the VSS buffer a useable signal

Settings you need to know:

H-L
2.89 (for 3.27 gears and 26.5" tall tire)

the DD SGI-5E puts out both a 2000ppm and 4000ppm signal
the PCM and Cruise both require a 2000 PPM square wave signal while the speedometer needs a 4000 PPM square wave signal.


power and ground wiring should be simple enough to understand. i mounted my SGI-5E in the stock location of the buffer box since all the required wires are right there. FYI its a pain to adjust while driving.
sensor signal and sensor ground are the yellow and purple wires respectively.
output 4 is your speedo signal while output five must be shared by cruise and PCM.
both cruise and speedo are the same color so if you find them not working swap them around

here are pics for you visual learners. I hope this helps some one because i sure could have used it

Gig 'em, Flores

tealman92

It gets wired between the trans speed sensor and your original wiring that went to your original speed sensor. Very straight forward not between computer and gauge

eflores

you are correct. reread my post
computer and gauge have no communication on a TBI

GeneralDisorder

iTrader: (1)

I have a 700R4 still, and have it simply translating for my rear end gear change. It works but at idle I do get some bouncing sometimes. Is that effect remedied if I remove the buffer? Is that why you say it doesn't work? Mine works - I have been assuming that I needed to use shielded com wire for the hookup to prevent noise like from the tach signal, etc. Just haven't got to it yet.

GD

tealman92

The 700r4 is a 2000 signal and the t56 is a 4000. If your original buffer worked for the original vss signal at 2000 why wouldnt your new box work with changing the output signal from the new vss from 4000 to 2000 then letting the rest of your stock system work as original?

eflores

because you are switching from sin wave to square wave
also t56 is nearly 40k sinwave not 4000 ppm
using to simply adjust your speedo signal from a stock trans to a stock buffer would work fine
im talking about using it to drive the PCM Cruise and Speedometer after a t56 swap

with all that said i spin 3523 PPM with the t56 3.27 gears and 26.5" tires
realistically if you could convert the sin wave to a square wave the speedo might be close but its not.

trying to simply change the sin wave to a square 2000 ppm output proved impossible. dunno why. this is simply how i fixed it

jmd

iTrader: (4)

The SGI-5 has always been capable of (since at least version B or C) converting square to sin.

It also has always been capable of turning a 17 pulse-per-turn to 4000 pulse per mile (which is a lot more than 4000 pulse per mile) or 40 ppt into 2000ppm.

I have installed a few without removing the VSS buffer. It can also replace the buffer.

If you're having trouble, contact Dakota Dig. Just don't let them tell you use of the buffer is impossible. It's not.

Glad you got it fixed.

eflores

i spent about an hour on with them trying to get it adjusted per their instruction and even at .250 which is the min limit my speedo was reading very high.

QwkTrip

iTrader: (22)

"OUT 1" is an AC waveform with my SGI 5c. I assume you could use that as input to the buffer box if you want to keep the buffer box. "OUT 4" is 4000 ppm (pulse per mile) and that can be used to operate the speedometer, if you want to bypass the buffer box. There is usually more than one way to solve a problem.

I have a T56 and use OUT 4 to drive the speedometer and eliminated the buffer box. I also use OUT 1 (AC waveform) for my aftermarket ECM as a simulated transmission speed signal input so the ECM knows ground speed. If I remember right, all dip switches are set to the OFF position.

eflores

yeah it was much easier on the pre e boxes to make this work. i havent seen ant tech worth reading on the e box so thats why i posted this