[_carrera_]

If you look deeper into the weaknesses of this engine: fuel injectors with a working pressure of 200 bar have no protection. That’s mean, if the pressure in the cylinder exceeds these numbers, they simply open( because the nozzle rod opens inwards,and the spring is like in a ballpoint pen) and easy to damage it,i try show on video

[_carrera_]

Engine stopped,rail pressure fall down from 120 bar to zero..inside to cylinder,after to oil,every stop..

[walile]

Originally Posted by _carrera_

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

What? Forget about 1000+hp. Running reliably above 800hp with the stock injector and fuel pump is news to me. Good news though.

If the JB4 can provide a 20% gain on an otherwise stock F90 M5, I will be so thrilled.

[_carrera_]

Originally Posted by walile

What? Forget about 1000+hp. Running reliably above 800hp with the stock injector and fuel pump is news to me. Good news though.

If the JB4 can provide a 20% gain on an otherwise stock F90 M5, I will be so thrilled.

1000+Hp engine( 900+whp) with stock injectors is real now,its done in 2017.
Jb4 and same boxes not correct,because dme calculate actual ignition angle with actual boost,jb4 distort it..

[walile]

So, ECU Flash tune can support a higher power level with stock fuel system compared to piggyback tunes?

[_carrera_]

Originally Posted by walile

So, ECU Flash tune can support a higher power level with stock fuel system compared to piggyback tunes?

Only flash more power and don’t need piggy back,1000+hp same

[walile]

Originally Posted by _carrera_

Only flash more power and don’t need piggy back,1000+hp same

Thanks for the clarification.

A 20% power gain is more than enough for me, which is probably close to 700 whp, considering that the factory 600HP rating is underrated. So, I will wait patiently to see if JB4 can deliver that.

At power level, we can probably expect a sub 11 second 1/4 mile with a trap speed of maybe 135mph (217km). That would be my goal.

[M4LAKA]

Originally Posted by walile

Thanks for the clarification.

A 20% power gain is more than enough for me, which is probably close to 700 whp, considering that the factory 600HP rating is underrated. So, I will wait patiently to see if JB4 can deliver that.

At power level, we can probably expect a sub 11 second 1/4 mile with a trap speed of maybe 135mph (217km). That would be my goal.

Probably mid 10s with jb4. It CAN do 10.9 stock apparently with the right conditions

[M5stallion]

Originally Posted by _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.

Yes, the rods are weak, a few have opened up their engines after running a tune/jb4 only to find bent rods...

[_carrera_]

Originally Posted by walile

Thanks for the clarification.

A 20% power gain is more than enough for me, which is probably close to 700 whp, considering that the factory 600HP rating is underrated. So, I will wait patiently to see if JB4 can deliver that.

At power level, we can probably expect a sub 11 second 1/4 mile with a trap speed of maybe 135mph (217km). That would be my goal.

I think 10.8@133 mp/h(213km/h) possible with jb4..its near 6.0-6.2 100-200km/h

[_carrera_]

Originally Posted by M5stallion

Yes, the rods are weak, a few have opened up their engines after running a tune/jb4 only to find bent rods...

You mean f10 m5?you don’t need open engine,if don’t listen some thud..because gap between piston and crankshaft near 3mm..if it damage,you will have thud

[josec70]

Originally Posted by M5stallion

Yes, the rods are weak, a few have opened up their engines after running a tune/jb4 only to find bent rods...

^^^this^^^^ just take a look at the F10 M5 forums. Lots of blown engines / bent rods. I have seen this firsthand with several members of our S Florida ///M group.

This platform is not anywhere close to bulletproof and the tune / JB4 combo is a ticking time bomb IMO, especially if you're not a gear head.

Let's see what happens when tunes become available.

[walile]

Originally Posted by josec70

^^^this^^^^ just take a look at the F10 M5 forums. Lots of blown engines / bent rods. I have seen this firsthand with several members of our S Florida ///M group.

This platform is not anywhere close to bulletproof and the tune / JB4 combo is a ticking time bomb IMO, especially if you're not a gear head.

Let's see what happens when tunes become available.

Is there a consensus as to what the stock rod can safely handle on the f10 M5?

[josec70]

Originally Posted by walile

Is there a consensus as to what the stock rod can safely handle on the f10 M5?

I don't think there's a real consensus; 650 WHP is thrown around quite a bit.

I've had 2 F10 M5's and have run piggys, exhaust, drop-ins and zero issues. Also ran dps on my 1st F10 M5 but got tired of the smell.

My point is not aimed at knocking tunes but pointing out that they are often perceived to be plug and play and forget about it, and that's simply not the case.

[onfireX5]

Originally Posted by josec70

I don't think there's a real consensus; 650 WHP is thrown around quite a bit.

I've had 2 F10 M5's and have run piggys, exhaust, drop-ins and zero issues. Also ran dps on my 1st F10 M5 but got tired of the smell.

My point is not aimed at knocking tunes but pointing out that they are often perceived to be plug and play and forget about it, and that's simply not the case.

Just noticed you have a Velos stage 1 on the F10. Is that their piggy? Did you ever dyno it. I’ve asked them many times about dyno data and only received the one “on a hot day” on their website. The design looks promising since it adds an rpm tap.

[josec70]

Originally Posted by onfireX5

Just noticed you have a Velos stage 1 on the F10. Is that their piggy? Did you ever dyno it. I’ve asked them many times about dyno data and only received the one “on a hot day” on their website. The design looks promising since it adds an rpm tap.

Stage 1 is their piggy; never dynoed it but zero issues and the car ran very hard. I was going to tune, sold my Velos Piggy, and then decided not to tune for some of the reasons discussed above.

Ending up going with an AA piggy and zero issues with this one as well.

[walile]

Originally Posted by josec70

I don't think there's a real consensus; 650 WHP is thrown around quite a bit.

I've had 2 F10 M5's and have run piggys, exhaust, drop-ins and zero issues. Also ran dps on my 1st F10 M5 but got tired of the smell.

My point is not aimed at knocking tunes but pointing out that they are often perceived to be plug and play and forget about it, and that's simply not the case.

So, the limit is basically at the gain of JB4 on pump gas? Wow, I didn't know that. Thank you guys for point it out.

By the way, besides horsepower, perhaps max torque is also a critical factor.

[onfireX5]

[QUOTE=josec70;23208031]Stage 1 is their piggy; never dynoed it but zero issues and the car ran very hard. I was going to tune, sold my Velos Piggy, and then decided not to tune for some of the reasons discussed above.

Ending up going with an AA piggy and zero issues with this one as well.[/QUOTE

Hopefully, we’ll have some options soon !