Backend Flash

[sr2223]

Is anyone running backend flash and can share their experience with the differences before and after the flash?

I only have mild mods - downpipes, n55 mid pipe, JB4 which I usually leave on map 5.

Just wondering if it's worth doing the flash and whether to do it myself or get a workshop to do it. Are there any workshops in Perth anyone can recommend?

[BMWhoarder]

i have been running various different revisions since September last year.

If you intend on running mixes of E85, its pretty much essential (p.s. RUN E85, the difference is night and day!).

I recommend if you have an android phone, purchasing the MHD app. This will allow you to run the backend flashes for use with JB4.

[sr2223]

I'm only running 98RON would I see much improvement?

[BMWhoarder]

alot of people who do the backend flash, complain that the car seems less responsive at lower throttle. This is because the throttle mapping is changed to make power delivery more smooth instead of just hitting you in the face.

its up to you, doing the flash gives you more tuning parameters should you want to go down that path, generally having the flash controlling the fueling is also going to be more beneficial to you as well, rather than the JB4.

[DR-JEKL]

Originally Posted by sr2223

I'm only running 98RON would I see much improvement?

hell yes going from 98 to a e85 custom tuned map will yield at least 20-30 rwkw!

I made 310 rwkw with just a fmic, cp, bmw pe, dp's running e30 on a ots cobb map. With E50 and a custom tune I now could be 320-330?

[martymil]

its more like 320 to 325 on e60 at best on stock turbo's with stock intake tubes but then every dyno is different

[martymil]

ba114 how the hell did you get your hands on the Fuel-It Stage 1 TB Injection ?

I'm waiting for them to go into production.

[BMWhoarder]

got one of the 4 beta/test units had been waiting on them from the moment they were mentioned being produced.

[martymil]

Any chance of a review ?

Would love to get my hands on it for some serious testing.

[BMWhoarder]

unfortunately my clutch gave out almost at the same point as receiving it and i'm still waiting on parts to replace thew majorly slipping one.

i dont want to clutter someone elses thread so if you want more info, send me a pm

[Jim621]

So with a backend flash, does the flash get wiped if you get a software update from BMW? Can BMW recognise the car is flashed? will they care?

[martymil]

You have to backup your current flash and then write the new one and yes bmw will know and only care if your under factory warranty