35I brake upgrade

sumotan · Post by **sumotan** » Thu Mar 25, 2021 1:47 pm

Thanks again Pete will do a couple more test. Is your tuner able to export files ? Perhaps in future I can do a flash & fine tune with JB4.
What Im going after is good low to mid range torque. The thing about our car though is the N20 engine, it's programmed & wired differently from other models even the JB4 had to have a specific set up & program for E89.

Many thanks again

Pbondar · Post by **Pbondar** » Thu Mar 25, 2021 3:49 pm

sumotan wrote: ↑Thu Mar 25, 2021 1:47 pm Thanks again Pete will do a couple more test. Is your tuner able to export files ? Perhaps in future I can do a flash & fine tune with JB4.
What Im going after is good low to mid range torque. The thing about our car though is the N20 engine, it's programmed & wired differently from other models even the JB4 had to have a specific set up & program for E89.

Many thanks again

Hi the tuner keeps his stuff all secret so no access to what they've done save the before and after dyno runs plus me peering at them as they work their magic..

I think you saw where the first tuner gave a good headline figure but with a massive mid range hole, filling that hole changed again the whole feeling of the car..is yours an auto?

sumotan · Post by **sumotan** » Thu Mar 25, 2021 4:00 pm

Hi Pete,
Apologies what I meant was to purchase the files from them. Yes mine is an auto.

Many thanks

Pbondar · Post by **Pbondar** » Thu Mar 25, 2021 4:14 pm

sumotan wrote: ↑Thu Mar 25, 2021 4:00 pm Hi Pete,
Apologies what I meant was to purchase the files from them. Yes mine is an auto.

Many thanks

There work is hand crafted against a base tune I guess they use..so the do several runs and see how the car responds to changes to requests for boost etc so you end up with a personal version.

When I asked them they said that they do loads of BMWs (a lot of 335 diesels, M2s/M3s/M4s, later 3 litre turbos etc) and that no two cars are the same, they have had N20s that quite happily ran into the 290s on a stage 1 tune..mine would only do the 260s..sniff..-:)

sumotan · Post by **sumotan** » Thu Mar 25, 2021 5:18 pm

That's the set back that Im facing that's why I had to go with JB4. Looks like I've got to learn to be satisfied with what I've got now. Lol

Many thanks again Pete

Boltz · Post by **Boltz** » Fri Mar 26, 2021 11:37 am

Pbondar wrote: ↑Tue Mar 23, 2021 2:16 pm I’ve ordered a 200 cell cat down pipe as it failed the MOT and I get quite a whiff of fuel with the top down when stationary..not sure when I will fit it, before the next MOT for sure

Peter, if you don’t mind me asking what 200 Cell cat have you gone for?

Pbondar · Post by **Pbondar** » Fri Mar 26, 2021 12:47 pm

Boltz wrote: ↑Fri Mar 26, 2021 11:37 am
Pbondar wrote: ↑Tue Mar 23, 2021 2:16 pm I’ve ordered a 200 cell cat down pipe as it failed the MOT and I get quite a whiff of fuel with the top down when stationary..not sure when I will fit it, before the next MOT for sure
Peter, if you don’t mind me asking what 200 Cell cat have you gone for?

http://www.evolutionracewerks.com/node/272

Sports Series 4" High Flow Catted Downpipe for N20 Engine

That should get me through emissions and still release a bit of noise and go..my tuning chaps say the company makes good products having fitted a couple and tested them..

Z4-forum.com

Z4-forum.com