Faster Speedometer?
Thread Starter
7th Gear
Joined: May 2018
Posts: 7
Likes: 1
From: New Hampshire
Faster Speedometer?
Hello guys, this is my first post on the forums.
I know this is kind of a pipe dream, but I was wondering if there is some way to upgrade the computer or something in the 1991 Corvette in order to have the speedometer update faster.
As it stands now, when I come to a stop, it takes a second or two for the speedometer to come down to zero, and there is the same issue when coming up to speed. It seems like the speedometer is slow to update, I'm not sure if this was a limitation of the computer when the cars were made, or if it is because of old age, but any kind of response would be fantastic.
Definitely not expecting there to be any way to speed up the old computer, but if anybody has heard anything relating to this, it would be much appreciated!
I know this is kind of a pipe dream, but I was wondering if there is some way to upgrade the computer or something in the 1991 Corvette in order to have the speedometer update faster.
As it stands now, when I come to a stop, it takes a second or two for the speedometer to come down to zero, and there is the same issue when coming up to speed. It seems like the speedometer is slow to update, I'm not sure if this was a limitation of the computer when the cars were made, or if it is because of old age, but any kind of response would be fantastic.
Definitely not expecting there to be any way to speed up the old computer, but if anybody has heard anything relating to this, it would be much appreciated!
Racer
Joined: Apr 2018
Posts: 349
Likes: 55
Hello guys, this is my first post on the forums.
I know this is kind of a pipe dream, but I was wondering if there is some way to upgrade the computer or something in the 1991 Corvette in order to have the speedometer update faster.
As it stands now, when I come to a stop, it takes a second or two for the speedometer to come down to zero, and there is the same issue when coming up to speed. It seems like the speedometer is slow to update, I'm not sure if this was a limitation of the computer when the cars were made, or if it is because of old age, but any kind of response would be fantastic.
Definitely not expecting there to be any way to speed up the old computer, but if anybody has heard anything relating to this, it would be much appreciated!
I know this is kind of a pipe dream, but I was wondering if there is some way to upgrade the computer or something in the 1991 Corvette in order to have the speedometer update faster.
As it stands now, when I come to a stop, it takes a second or two for the speedometer to come down to zero, and there is the same issue when coming up to speed. It seems like the speedometer is slow to update, I'm not sure if this was a limitation of the computer when the cars were made, or if it is because of old age, but any kind of response would be fantastic.
Definitely not expecting there to be any way to speed up the old computer, but if anybody has heard anything relating to this, it would be much appreciated!
Thread Starter
7th Gear
Joined: May 2018
Posts: 7
Likes: 1
From: New Hampshire
As I feared. Do you know if its the ECM that is responsible for updating the speedometer? And if so, is it possible to purchase a newer/modded ECM that runs faster?
If its just some chip elsewhere in the car, I might do some research and see if a newer version of the chip is available, but I am not too well versed in electronics and I would be hesitant to change anything that could end up messing with the guages or anything else.
Thanks for the reply!
If its just some chip elsewhere in the car, I might do some research and see if a newer version of the chip is available, but I am not too well versed in electronics and I would be hesitant to change anything that could end up messing with the guages or anything else.
Thanks for the reply!
Racer
Joined: Apr 2018
Posts: 349
Likes: 55
As I feared. Do you know if its the ECM that is responsible for updating the speedometer? And if so, is it possible to purchase a newer/modded ECM that runs faster?
If its just some chip elsewhere in the car, I might do some research and see if a newer version of the chip is available, but I am not too well versed in electronics and I would be hesitant to change anything that could end up messing with the guages or anything else.
Thanks for the reply!
If its just some chip elsewhere in the car, I might do some research and see if a newer version of the chip is available, but I am not too well versed in electronics and I would be hesitant to change anything that could end up messing with the guages or anything else.
Thanks for the reply!
Thread Starter
7th Gear
Joined: May 2018
Posts: 7
Likes: 1
From: New Hampshire
Haha, thanks for the info! Hopefully its just the dash, as I think that would be easier to work on than the ECM.
Do you know if there are any schematics or documentation for the dash’s PCB available anywhere? That would certainly help for figuring out what chips are responsible for what.
I was actually planning to take out the dash anyways, as my tach is reading high, which ive read is a common problem and a relatively easy fix, so this would be a good thing to take a look at while ive got it out.
Thanks for all the help so far! My pipe dream doesnt seem as far fetched now.
Do you know if there are any schematics or documentation for the dash’s PCB available anywhere? That would certainly help for figuring out what chips are responsible for what.
I was actually planning to take out the dash anyways, as my tach is reading high, which ive read is a common problem and a relatively easy fix, so this would be a good thing to take a look at while ive got it out.
Thanks for all the help so far! My pipe dream doesnt seem as far fetched now.
Racer
Joined: Apr 2018
Posts: 349
Likes: 55
Haha, thanks for the info! Hopefully its just the dash, as I think that would be easier to work on than the ECM.
Do you know if there are any schematics or documentation for the dash’s PCB available anywhere? That would certainly help for figuring out what chips are responsible for what.
I was actually planning to take out the dash anyways, as my tach is reading high, which ive read is a common problem and a relatively easy fix, so this would be a good thing to take a look at while ive got it out.
Thanks for all the help so far! My pipe dream doesnt seem as far fetched now.
Do you know if there are any schematics or documentation for the dash’s PCB available anywhere? That would certainly help for figuring out what chips are responsible for what.
I was actually planning to take out the dash anyways, as my tach is reading high, which ive read is a common problem and a relatively easy fix, so this would be a good thing to take a look at while ive got it out.
Thanks for all the help so far! My pipe dream doesnt seem as far fetched now.
Thread Starter
7th Gear
Joined: May 2018
Posts: 7
Likes: 1
From: New Hampshire
I don't know of any schematics, and I imagine GM wouldnt share them in order to protect their tech from someone trying to sell reverse engineered ones. It would be a bit of project to emulate, but if you built a test bench, logged all the inputs to their corresponding outputs, then set a microcontroller to do that, it should work. I think that would be many, many hours of work, however.
