What piggyback does Modern Performance use?

[MPNick]

My piggyback and mass air system will not be the limit. We can control your spark retard and fuel. How much is a very big question. How much can your intercooler flow? How good is the temp drop? How big is your turbo? What injectors are you planning on running? How far will your rev your engine?

We feel that with a good air fuel ratio and good spark retard the limit becomes the rod bolts. To many high revs and the bolts may break.

Back to your question. It seems that 9 to 11 psi is safe if you do not lean out, detonate or over rev.


Thanks again


Later.........Nick

 

[twizyours]

Would you help with a na tune up too. My goal is to tune as much up na and then see if I still want turbo or not. Even NA I will start to see limitations once i make more changes. I have no intensions of hc pistons. Once I get my fpr cam gears and headers I wanted a ecu. First I was going to go with the microtech but after seeing how many changes needed to be made and seeing yours with a air flow meter It is sounding really good to me. I am really interested in getting it when I get to that point. So my question is when I get to that point would you help getting set up for NA people too.

Thanks

 

[WShade]

Will the car throw a CEL with your set up?

 

[PaulMP3]

If i have my mp3 ECU, will i need to switch to a P5 ecu. Since it controls timing could i just leave it in and make some more adjustments with timing.

 

[MPNick]

Yes we are looking to start a NA project, call us please.


No it will not throw a cel


No you do not need to replace your stock ecm. you can program the spark and fuel curves as you need with our piggyback.

 

[WShade]

If I wanted to go with the set of larger injectors so I do not have to run aux injectors, which do you recommend with your unit? How much, if you sell them? And, I assume with the piggyback and larger injectors you do not have to worry about the stock pump providing enough pressure or can I still run my in-line aux pump in conjunction. Is it possible to run an in-line aux pump with just the factory fuel pressure regulator and no FMU?

 

[Little Beavis]

Yeah WShade's question. . .

 

[MPNick]

MPI Mass Air Tuner[AKA the piggyback] will not run Peak and Hold injectors. You can run a extra set of stock injectors, Honda units or almost any other none Peak and Hold units.

If you are running an inline pump right now keep it. The MPI tuner can turn the inline pump on and off as needed. We can program our unit to turn on the pump 100% when we are at full boost. We can keep it on all of the time but at something like 50% until then.



Thanks again


Later........Nick

 

[PaulMP3]

this would solve the running rich problem at idle, for those with an inline pump.

 

[Little Beavis]

this would solve the running rich problem at idle, for those with an inline pump.

Yes, interesting. . .

Next question. . .will it stop the stalling from venting directly to atmosphere. ..I'm guessing not since the stock injectors are still in there. I hate the stalling. . .doesn't happen often, but every now and then. . . GOTCHA!

 

[MPNick]

Not sure why an extra fuel pump makes you run rich at idle. Do you have an extra pump along with an FMU?

If you are stalling because of a blow-off valve you can tune alot of it out.



Thanks again


Later............Nick

 

[WShade]

MPI Mass Air Tuner[AKA the piggyback] will not run Peak and Hold injectors. You can run a extra set of stock injectors, Honda units or almost any other none Peak and Hold units.

If you are running an inline pump right now keep it. The MPI tuner can turn the inline pump on and off as needed. We can program our unit to turn on the pump 100% when we are at full boost. We can keep it on all of the time but at something like 50% until then.



Thanks again


Later........Nick

No bigger injectors So if I want additional fuel enrichment I would have to run your aux injector setup. Right

 

[MPNick]

You can run larger injectors in the stock fuel rails if you want to. We just do not sell them. I was talking about running four extra injectors on the intake runners upsteam of the stock ones.

Yes you will be able to run replacement larger then stock Mazda fuel injectors in the stock location if you need to.


Thanks again


Later...........Nick

 

[WShade]

MPI Mass Air Tuner[AKA the piggyback] will not run Peak and Hold injectors. You can run a extra set of stock injectors, Honda units or almost any other none Peak and Hold units.

If you are running an inline pump right now keep it. The MPI tuner can turn the inline pump on and off as needed. We can program our unit to turn on the pump 100% when we are at full boost. We can keep it on all of the time but at something like 50% until then.



Thanks again


Later........Nick

So, the unit will control larger injectors in the stock fuel rail with no problem. Thats where I was confused. I would rather do that than use aux injectors. Peak and hold or saturated? What size do you recommend? 370 cc / min ?? Does the programming software have an "Auto Tune" feature like the Hondata stuff?

 

[1sty]

I may have missed it but can this piggy back control the facotry injectors spark or only extra injectors?

 

[MPNick]

Our MPI tuner and mass air meter kit will control the stock OEM factory fuel injectors along with spark retard. If you are not planning on running the extra injector setup you can then use our boost control pack[$58.00] and now you will also be able to program your boost level. This will also work with our dual mapping program.

On pump gas you can run a lower boost level and more spark retard. If you go to the track and fill it with 100 race fuel you flip to the "B" map and now you have more fuel, more boost and less timing retard. When you refill with pump gas you must then go back to the "A" map.

Please keep in mind that you must first tune the "B" map for use with 100 octane race fuel.

Thanks again


Later..Nick

 

[ddogg777]

Ooh! Tell us more about your boost control pack! How many boost levels can it program and how does it interact with the on-screen software? FYI, I have a touchscreen carputer going in soon.

 

[ddogg777]

I would rather do that than use aux injectors. Peak and hold or saturated? What size do you recommend? 370 cc / min ?? Does the programming software have an "Auto Tune" feature like the Hondata stuff?

Is everyone worried about improper air/fuel mixing with the aux injectors or is there something else?

 

[WShade]

I just think it is a more simplistic way of doing it. But, I could be wrong. I am not the tuner, Nick is

 

[PaulMP3]

I like the idea of additional injectors. It will keep the car feeling very stock when not boosting.

why is everyone opting for the bigger injectors?

Can you explain this boost control pack with a little more detail on how it works, what it looks like??