New DIY with pictures for working MPG on 6cyl swap

[KSKarl]

Thanks, I used Dredder's tip about inserting a wire right into the connector for both the MPG gage and fog light indicator when I added fog lights. Works fine

[Alex Lipowich]

If you've got a modified transplant in your car, cams, headers, injectors, euro hfm, or, if you've transplanted an S54 or Euro S50B30 or B32.. then the mpg signal from the factory dme is no longer going to supply the cluster with an accurate signal, nor would it give the OBC an accurate signal.

Solution?

Steve at Seattle Circuit has a $100 pcb you can insert, tune, and then regain the accuracy of your obc/cluster for mpg.

Very, very cool stuff.....

(will be incorporating it as an option on the S54 P&P kits)

Have fun!

Alex.

[Marv17]

awesome. I too just completed this little DIY ... its pretty neat to have it working like a normal 6 cyl E36.
Thanks guys for the tutorial.

[1996 318ti NY]

just got the mindset to do this today while changing my steering wheel was a breeze, and i kinda like that its active now getting 25+ at 55-60 ish on the highway with 3.73's bone stock though so it should be accurate. Time to relocate the battery now oh joy!

[eurohb]

Anyone know if this will work for the 4 cylinder?

[PlusOne]

I had to run the wire up from engine bay plug through the fuse box and fire wall to my cluster as per the OP. I did not have the enhanced OBC display that I could tap into. My MPG works great now. Thanks all