TRF Performance X5 35D Stage 1 flash tune

[bawareca]

My OBC mileage is always very close to the real life mileage. With the 20"s (style 214) I was never able to get readings over 24-25 for a longer trip. But I usually stay in the 75-80 mph range.

[blue dragon]

Originally Posted by josiahg52

As I mentioned, there was only one problem. Due to rain, I had to close the rear hatch after disconnecting the negative battery terminal connector. As there is no mechanical release, this is a problem. Connecting a battery to the jumping terminals under the hood did not work. I had propped the trunk floor open before closing the hatch and with the rear seats folded down, I was able to use a piece of wood with a clothes hanger taped to it to touch the connector to the negative terminal and get the hatch open.

There is a mechanical release for the rear hatch, if you look on the inside trim, you will see there is a cutout under which is a mechanical release

I so want to do this, but we have emissions which consist of plugging into the OBDII port and ensuring that the monitors are set to ready and there are no CELs or MILs

[josiahg52]

Originally Posted by blue dragon

There is a mechanical release for the rear hatch, if you look on the inside trim, you will see there is a cutout under which is a mechanical release

I so want to do this, but we have emissions which consist of plugging into the OBDII port and ensuring that the monitors are set to ready and there are no CELs or MILs

I read of a release but couldn't find it and it seemed crazy one wouldn't be provided. Got a picture to help locate it?

[bawareca]

Originally Posted by blue dragon

I so want to do this, but we have emissions which consist of plugging into the OBDII port and ensuring that the monitors are set to ready and there are no CELs or MILs

He went with Stage1 only, but this also quite a bit of improvement over the stock tune.

[Ozer]

My OBC reading and my manual calculation was always dead on, maybe .5 variation with stock 18s.
After i got my style 214s, i cant get past 25 mpg on the OBC reading but doing it manually showed me 27.5 mpg for that same tank. I wonder if there is calibration that can be done?

Either way it doesnt bother me all that much, i always do manual calculations.

[josiahg52]

I've only calculated a few tanks but it's within 1 mpg and I've kept track of the miles and gallons of every tank, I just haven't calculated them all. Seems to depend on what type of driving I'm doing. Or maybe this is the M5? I get the experiences mixed up some time. Point is I have years of data that I'll be able to compare once I get some miles on this tune.

[josiahg52]

Originally Posted by bawareca

He went with Stage1 only, but this also quite a bit of improvement over the stock tune.

With as much a difference Stage 1 made, the other stages must be crazy.