Turbo vs Non-Turbo Trip computer. Is there a difference?

logscool · Post by **logscool** » 07 Apr 2019, 17:14

I want to add a trip computer to my 1996 Volvo 850 GLT. It has a VDO cluster. If I install a trip computer from a turbo car will it give me accurate mileage readings in my NA?

Also I recently corrected the mileage on the odometer after a repair. It has made me notice that the mechanical odometer is accumulating miles a bit slower than the clusters internal mileage it is only about 0.75% slower than the clusters internal mileage. Connecting a scangauge shows that it also accumulates miles faster than the mechanical odo. Is this normal? I'm sure it's within the margin of error of both of these gauges I'm just not sure why they are different.

logscool · Post by **logscool** » 09 Apr 2019, 14:22

Well I guess I'll just find out for myself and report back in a couple weeks after it's installed and had a chance to compare at least a tank to my new scangauge II.

Post by **misha** » 09 Apr 2019, 14:30

They are the same....but the problem is that it needs to be added to ecu or cluster by a dealer...if the car wasn't originally equipped with it.

logscool · Post by **logscool** » 09 Apr 2019, 14:41

Oh, I was not aware of that. I was thinking of doing an ECU tune at some point so perhaps this could be added but if something in the clusters computer needs to be changed too I'm not sure how to accomplish that.

Post by **misha** » 09 Apr 2019, 15:47

It's a dealer thing...only.
Btw...ecu tune in n/a car can give you max.20hp....and that...IF done properly.

Post by **erikv11** » 09 Apr 2019, 19:13

logscool wrote: 07 Apr 2019, 17:14 I want to add a trip computer to my 1996 Volvo 850 GLT. It has a VDO cluster. If I install a trip computer from a turbo car will it give me accurate mileage readings in my NA? ...

Yes.

And unlike for the S/V/C70 the 850 trip computer is plug and play for any VDO cluster, no dealer visit required. Just also get and connect the info switch from the donor car and everything will work. Plug them both in and go.

Post by **Ozark Lee** » 13 Apr 2019, 08:10

There are some compatibility issues on the older N/A cars that used the LH 3.2 Jetronic ECU setup instead of the Motronic.

...Lee

logscool · Post by **logscool** » 13 Apr 2019, 08:16

This car is Motronic M4.4 so I think that should be ok. Thanks for the heads up.