Hwilli
07-31-2003, 09:07 PM
I just finished up the wiring of my Turbo Timer today.
Have a few issues. One is a general issue, the other is car specific.
1. The RPM display on the TT is wrong. It reads anywhere from 600-1000 RPMs to high. IO have two other units that read RPMs, and of course the TAC. All three are tapped at the ECU on the same wire. I originall had the TT tapped off one of my other units, but thought the extra wire may have caused additional resistance, so I moved it to less than an inch from the ECU itself. Still the same issue.
My question is, has anyone else had this issue, and is there a way to calobrate it. I am not so much worried about it being wrong, but because it is, it makes me worry about the accuracy of the speed, and other functions.
#2. The factory alarm no longer arms since installing the turbo timer. I found a tech article that relates to MKIII Supras. It says to cut a certain wire on the TT harness, and you'll be fine. Not sure about on MKIVs though. I doubt anyone will know this one, but it can't hurt to ask. :)
TIA,
Howard
Have a few issues. One is a general issue, the other is car specific.
1. The RPM display on the TT is wrong. It reads anywhere from 600-1000 RPMs to high. IO have two other units that read RPMs, and of course the TAC. All three are tapped at the ECU on the same wire. I originall had the TT tapped off one of my other units, but thought the extra wire may have caused additional resistance, so I moved it to less than an inch from the ECU itself. Still the same issue.
My question is, has anyone else had this issue, and is there a way to calobrate it. I am not so much worried about it being wrong, but because it is, it makes me worry about the accuracy of the speed, and other functions.
#2. The factory alarm no longer arms since installing the turbo timer. I found a tech article that relates to MKIII Supras. It says to cut a certain wire on the TT harness, and you'll be fine. Not sure about on MKIVs though. I doubt anyone will know this one, but it can't hurt to ask. :)
TIA,
Howard