[Velocity26]

^Exactly. It is not the NLS crap, it is when a misfire, or other fault, causes the ECU to turn off the injector. None of the current controllers detect the shutdown and continue to supply fuel to that cylinder.

[whosdady]

Originally Posted by MM Performance

That's exactly what blew my engine on the dyno. Misfire cut DI fuel to bank 2, PI kept spraying, DI injector turned into glow plug, hyper lean, super knock, melted piston down to ringland and melted aluminum onto cylinder wall, massive blow out of rings and ring lands (written in order)...new engine time

BTW I am 6AT

Ouch, I stand corrected. I am well aware this issue exists. I just thought the 6MT guys were more affected. You are the first I have read about with a 6AT.

[MM Performance]

Originally Posted by Cloud9blue

Yep... This is why all the current controllers for PI, whether it is the JB4 or Haltech are grossly inadequate for the job... And yet, people on N54tech and the other forums fail to acknowledge that because a major vendor (who all know who that is) is standing behind it. Don't forget this was the same company who thought WW meth kit was a good idea just a few years ago.

Instead of just batch fire them and pray the DME will work out the rest like it is right now, these PI kits should really able to read all the important parameters directly from DME and adjust flows to individual injectors...

Supposedly syvecs can do it but $$$$$

[dreyo27]

Originally Posted by Cloud9blue

Yep... This is why all the current controllers for PI, whether it is the JB4 or Haltech are grossly inadequate for the job... And yet, people on N54tech and the other forums fail to acknowledge that because a major vendor (who all know who that is) is standing behind it. Don't forget this was the same company who thought WW meth kit was a good idea just a few years ago.

Instead of just batch fire them and pray the DME will work out the rest like it is right now, these PI kits should really able to read all the important parameters directly from DME and adjust flows to individual injectors...

Thats why i am excited about Chris@VargasTurboTech DI development with the HPFP. 650WHP on DI only on e85 is amazing. I am sure with a E60 mix there is even more potential.
And best of all looks like the ECU controls it.
I just hope that when it comes to market, if it comes to market, it has a decent price point.

[Chris@VargasTurboTech]

Originally Posted by dreyo27

Thats why i am excited about Chris@VargasTurboTech DI development with the HPFP. 650WHP on DI only on e85 is amazing. I am sure with a E60 mix there is even more potential.
And best of all looks like the ECU controls it.
I just hope that when it comes to market, if it comes to market, it has a decent price point.

There are a lot of advantages to going DI only -100% OEM ECU control is one of them. Unfortunately our DI only work is promising but no where near ready for production -but we're working on it!

Chris

[Chris@VargasTurboTech]

P.S. we're starting BB turbo testing.

[Whiteout335i]

Originally Posted by Chris@VargasTurboTech

P.S. we're starting BB turbo testing.

Pure, hexon, and now vtt! E90 platform just keeps getting better!

[turekaj]

On the cobalt SS turbo (also DI) we were able to modify the stock intake cam fuel lobe to provide more duration, providing an extra 20% fueling to the rail.

Has any vendor tried grinding the fuel lobe on the cam yet ?

[Chris@VargasTurboTech]

Originally Posted by turekaj

On the cobalt SS turbo (also DI) we were able to modify the stock intake cam fuel lobe to provide more duration, providing an extra 20% fueling to the rail.

Has any vendor tried grinding the fuel lobe on the cam yet ?

N54 pump isn't run off a cam lobe. Different type of pump.

Chris

[Milan]

I'm pretty sure Terry's new controller addresses all these concerns.

[turekaj]

Isn't Terry's controller for port injection though?

[Milan]

Originally Posted by turekaj

Isn't Terry's controller for port injection though?

I think I posted without reading the second page. I was addressing the concerns of not being able to shut off an individual injector. The new controller can do that...

[dreyo27]

Originally Posted by Chris@VargasTurboTech

There are a lot of advantages to going DI only -100% OEM ECU control is one of them. Unfortunately our DI only work is promising but no where near ready for production -but we're working on it!

Chris

is it months away or years?

[TrollToll]

Originally Posted by dreyo27

is it months away or years?

Posted in another thread:

Originally Posted by Chris@VargasTurboTech

I wouldn't say it's all talk -it's a prototype. That said, it's no where near ready for release, if ever, so if you want supplemental fueling def go with either single shotgun upgrade, TBI, port injection, or some combo. If/when we get close I'll def make tons of posts about it.

Chris