Just ordered Osirus for my built motor/SC.. Will give a review soon..

 

Cool man, definitely let us know. I think eventually I will drop the VPro and move over to Osiris 100% of the time.

Hopefully you have been in talks with Jared/Matt regarding the modified Nissan MAF's to support the kind of power you'll be making.

 

No, but that would be a nice upgrade (MAF).. I wanna drop my utec and just do Osirus 100%

 

I have osirus for my 03sc with 10psi and it works great. The only thing is that I'm trying to figure out how to scale the 550's down so it starts easier when its hot out.

 

Who is tuning your Osiris? I am stupid, the Osiris is a whole ECU?

 

Osiris is the program that allows you to real time tune your ECU and flash it to save the settings.

Any competent tuner can do the tuning.

 

So the stock ECU can do anything you tell it to....this is a full, BETTER replacement for a $3000 FCON standalone?

 

I think that is to be debated. I do know this:

I can control everything my stock ECU sees.
I can not control everything with my FCon Vpro.

There is a valid argument/need for stand alones and what they can do. All UpRev has to prove is that the stock ECU is up to the job on a few cars and I think they will have all the credit they need.

 

very interesting and enlightening thread... I look forward to progress reviews...

 

Installing Osirus flash as we speak...... Cipher as well...

 

Let us know if you're having issue with hot start. I know Jared had that problem with Josh's car when we were tinkering with it for the last year but he got it all worked out.

Who is doing your tuning?

 

We've already done two twin systems in house, plus a supercharged truck. The software is up to the task and the stock ECU is a monster. The ability to get the Modified Nissan MAF's makes the task so much easier now.

The benefit of something like the AEM or Fcon only comes into play in either full race cars, or cars making over 600hp. The stock ECU isn't limited to 600hp, the modified MAF sensors are. At this point it is safer though not as driveable or as efficient to switch to speed density under the 600hp mark, but over 600hp there is no choice.

The full stand alones are nice because you can tune per cylinder and that's just not something we really plan on supporting. The 1/50th of 1% of Nissan owners that are going to need to go above 600hp should go with the big boy stand alone ECU's and we'll be there to handle the other 99.98%.

 

Could you expand on the modified MAFs you're talking about... what they are... how big they are... what sizes they come in... where you get them... Do you sell them... how much do they help an NA VQ... what you have to do to make them work... things like that...

Maybe start a new thread if you want to...

Thanks...

 

PMAS (performance mass air systems) makes them. They make the modified MAF's for the mustangs which are nearly identical but don't have the AIT sensor in them. We requested to get the Nissan ones made and they hopped right on it. We're trying to update our site currently and when we have the new site going they will be listed. The stock MAF is fine to about 5-6psi boost so the NA would not gain anything going to the modified MAF. They are simply for the 400-600hp range forced induction cars.

 

So how do i get this maf? Id like to remove my damn UTEC... Nmd.. Im setting up an appt with Henson performance...

 

Henson Performance <3

James is a good guy and he'll appreciate the business.

 

He is contacting you now..... Ill bring my car up there for tune/removal of the UTEC...

 

So you basically make the MAF bigger so you can blow/force more air in.

I'm thinking that my new NA engine will rev high enough that it would help to suck through a bigger straw.

Do you all have a way to calculate any of this? Or, do you just install different MAF tubes and see how they affect the engine on the dyno. One of my future plans involves installing a larger MAF tube. Actually I'm currently running an Osiris/Haltech combo in MAP mode. I'm just thinking about some new stuff for after my motor is broken in.

 

Nope not bigger, calibrated to properly calibrate more air is all. The MAF sensors work by calculating how much voltage needs to be applied to keep the sensor at a certain temperature. The more air moving across it the cooler it gets. To attain correct readings for airflow over a certain CFM (don't ask me what is it, I have no damn clue, the people at Performance Mass Air Systems are the wizards when it comes to that) you have to be able to add more voltage/amperage to the sensor to keep up with the cooling properties of the air flowing across it.

That said, you could use a larger diameter MAF tube and sensor and have the adjustments made in the ECU to support that, but when your tube gets larger it flows exponentially more air, and it will begin to affect low RPM readings when the air volume flowing across the sensor is moving slowly.

Technically speaking you drive a car powered by a giant air pump, if the size of the air pump changes (ie way more huger displacement or totally more higher revs) then you change the size of the MAF tube and recalibrate. If you change the size of the tube without changing the volume of the air pump, then you face the challenge of stalled air in the MAF tube at low RPM and the inability of the ECU to adjust itself. I'm certain gains can be made, but we're not going to touch it. We'll leave that kinda stuff to the Pro Tuners to play with and see if they can get it working. We're going to focus on making our product better

 

To JayZ, how about an update? Any information would be appreciated because I thinking about using Osiris on my built engine.