[walile]

Any updates on the JB4 development or other piggyback tuning?

[onfireX5]

Terry is waiting on his M5 to arrive in May.

Nothing yet from RaceChip.

[Sheharyar_rr]

Since we're waiting and don't have much to do... what does the F90 run stock boost psi?

[esquire]

Originally Posted by onfireX5

Terry is waiting on his M5 to arrive in May.

Nothing yet from RaceChip.

Is race chip still a respected company in the BMW segment? I don't mean that as a slight to them, but I haven't heard much about them in a long time. I actually thought they went out of business.

[onfireX5]

Originally Posted by esquire

Is race chip still a respected company in the BMW segment? I don't mean that as a slight to them, but I haven't heard much about them in a long time. I actually thought they went out of business.

Very respected. Only ISO certed Chip Company that I know. Makes a huge difference on my X5m. Looking forward to their M5 Box.

[walile]

Originally Posted by Sheharyar_rr

Since we're waiting and don't have much to do... what does the F90 run stock boost psi?

According to MotoManTV's Tech Review, 24.46 psi.

[_carrera_]

New M5 now already available for flash!its broken!same as all G series

[onfireX5]

Originally Posted by Sheharyar_rr

Since we're waiting and don't have much to do... what does the F90 run stock boost psi?

Mine peaked at 20.5psi.

[Sheharyar_rr]

Originally Posted by _carrera_

New M5 now already available for flash!its broken!same as all G series

Source?

[_carrera_]

Originally Posted by Sheharyar_rr

Source?

https://instagram.com/p/BirsSUfjOmI/

This already tunedm550d
https://instagram.com/p/BipCgznDQqF/

[Sheharyar_rr]

Originally Posted by _carrera_

https://instagram.com/p/BirsSUfjOmI/

This already tunedm550d
https://instagram.com/p/BipCgznDQqF/

They posted about M550i too when it came out, i made a thread about it as well

http://g30.bimmerpost.com/forums/sho....php?t=1404654

But something is fishy about them, I have yet to see any one with their tune or even an actual user review. If they are legit then it's quite an achievement. Can't wait to hear the results

[_carrera_]

Originally Posted by Sheharyar_rr

They posted about M550i too when it came out, i made a thread about it as well

http://g30.bimmerpost.com/forums/sho....php?t=1404654

But something is fishy about them, I have yet to see any one with their tune or even an actual user review. If they are legit then it's quite an achievement. Can't wait to hear the results

Many reviews,but in Russian, they are in Moscow located

[Sheharyar_rr]

Originally Posted by _carrera_

Many reviews,but in Russian, they are in Moscow located

I have yet to even find any review or video or dyno anywhere of a DME8 car in Russian or whatever language. Please post if you can find anything not from k8 Strasse themselves. B48, b58, n63tu2, s63tu4... anything

[M.S.B]

I saw this last week but no info

[_carrera_]

Originally Posted by Sheharyar_rr

I have yet to even find any review or video or dyno anywhere of a DME8 car in Russian or whatever language. Please post if you can find anything not from k8 Strasse themselves. B48, b58, n63tu2, s63tu4... anything

Nobody else broken this CU
This week must be any new cars with B58,B57(x3) and 530 B48

[_carrera_]

Originally Posted by M.S.B

I saw this last week but no info

Its piggy back
I know this guy,Gorilla owner russian

[esquire]

Originally Posted by M.S.B

I saw this last week but no info

The exhaust sound on that red one..... wow.

[walile]

Originally Posted by onfireX5

Mine peaked at 20.5psi.

What kinda gas are you using? 91 Octane or 93/94?

20.5 psi (~=1.41 Bar) actually makes a lot of sense. The E63 and E63S has max boost of 1.3 Bar and 1.5 Bar respectively.

So, at 24.46psi (~= 1.69 Bar) of boost, the F90 M5 really should be making more power than the E63S. Considering the 10% larger engine displacement and 12% more max boost pressure.

I wonder under what condition will the boost reach 24.46 psi. If it's normally only peaking at 20.5 psi, perhaps there is more potential to be unlocked by the tuner.

[onfireX5]

Originally Posted by walile

What kinda gas are you using? 91 Octane or 93/94?

20.5 psi (~=1.41 Bar) actually makes a lot of sense. The E63 and E63S has max boost of 1.3 Bar and 1.5 Bar respectively.

So, at 24.46psi (~= 1.69 Bar) of boost, the F90 M5 really should be making more power than the E63S. Considering the 10% larger engine displacement and 12% more max boost pressure.

I wonder under what condition will the boost reach 24.46 psi. If it's normally only peaking at 20.5 psi, perhaps there is more potential to be unlocked by the tuner.

93 octane. I’ve found the Max publisher number to be a DME tuning max number on my X5M. Does not command that high boost number but is tuned for it if reached. M5 might be the same.

[walile]

Originally Posted by onfireX5

93 octane. I’ve found the Max publisher number to be a DME tuning max number on my X5M. Does not command that high boost number but is tuned for it if reached. M5 might be the same.

Thanks. If this implies that the stock turbocharger has some headroom left, I wonder if the fueling system will be the ultimate limitation.

[_carrera_]

Originally Posted by walile

Thanks. If this implies that the stock turbocharger has some headroom left, I wonder if the fueling system will be the ultimate limitation.

The problem with fuel was solved last year.several X5M and M5/6 have 1000+Hp without methanol injection and additional systems,fully standard fuel system.at f90, the operating pressure is 350 bar.are other pumps and injectors,but if not enough,same solution

[_carrera_]

The most problem in S63tu/tu2 is connecting rods..too sick.its same like 750 f01 2008,i hope in f90 something stronger,but didn’t see it yet.