mpi tuner?

[Micah]

how come everyone keeps skipping over the question?!!? HOW COME THE MPI ON A MSP WILL NOT PASS INSPECTION????

That isn't the question. The question is why will it have a hard time passing with larger injectors. Here is the facts of it as I (and many others) see it.

Mazda paid a team of technicians to tune the ECU. They spent lots of money and time as extremely well educated people working on a budget that most of us will never be afforded. The ECU is tuned to work directly with the injectors sized as they are in the car. If you chose to go with larger injectors - you are basically throwing all that work out the window. Yes, arguably the tuner gods may shine upon you - and the great spirit of Terry the turbo god might be channelled - maybe you will accomplish a perfectly tuned car. But the odds aren't quite that good.

The fact about failing inspection is that you would have to tune the car to run well at idle, and at load - something that you will be fighting the stock fuel maps of the ECU on constantly.

Jred - you asked about the injectors. MPNick gave you an answer. Now you ask the same question using technical terms. He already answered the question - better spray pattern. Regardless of how it is acheived, the newer injectors are going to have a better spray pattern. It's a pretty easy idea to conceptualize, as time passes - technology increases, and products improve. Why you chose to go with the same question, only instead questioning the parts involved in the injectors - well, it looks like a strange tactic to me.

MPNick knows his stuff. There have been multiple attempts in the past to say otherwise, and in each case, those people were, for lack of a better phrase "taken to school". If you seriously have questions about the product, I would recommend you call the shop. 732-222-3679. Anyone who has spoken with MPNick for even a short while could tell you that the man knows his stuff, and does not guess about things. Nick has alot of experience, and a very large customer base. I've spent quite alot of time in his shop and I've seen him do some amazing things. I've also watched him handle some real lowlifes with a dignity few could muster. Am I biased? Of course I am - he's a good friend of mine. He saw me through the turbocharging and tuning of my car, the blowing of my engine when I overrevved (I should have listened when he kept asking me to turn the boost down), and the installation of my new engine. Most of the long time members will back me up in what I've said above.

So, any other questions?

 

[1sty]

So, any other questions?

Why did you paint the duck blue?

(evil)

 

[Bigg Tim]

Why did you paint the duck blue?

(evil)

(lol2)

I think the reason it won't pass is because it will idle poorly and rich with the bigger ones.

 

[1sty]

(lol2)

I think the reason it won't pass is because it will idle poorly and rich with the bigger ones.

It depends ont he state does't it?

Some states will fail any car that has ANYTHING in the emission system that is not stock. The sniffer test in various states will certianly pick up a problem with the larger injectors if they are not tunable at idle with the MPI. However, in a state like New Hampshire, there is no sniffer test so it will definitly pass.

I think the real question is will the MPI system be able to control larger injectors at idle so that the system will pass a sniffer test and if not, why can't it control the larger injectors to simply not throw out as much fuel at idle?

Tuning aside ofcoarse. For this, it seems to be a question of the MPI capability not the tuners.

 

[yashart_mp3]

That isn't the question. The question is why will it have a hard time passing with larger injectors. Here is the facts of it as I (and many others) see it.

Mazda paid a team of technicians to tune the ECU. They spent lots of money and time as extremely well educated people working on a budget that most of us will never be afforded. The ECU is tuned to work directly with the injectors sized as they are in the car. If you chose to go with larger injectors - you are basically throwing all that work out the window. Yes, arguably the tuner gods may shine upon you - and the great spirit of Terry the turbo god might be channelled - maybe you will accomplish a perfectly tuned car. But the odds aren't quite that good.

The fact about failing inspection is that you would have to tune the car to run well at idle, and at load - something that you will be fighting the stock fuel maps of the ECU on constantly.

Jred - you asked about the injectors. MPNick gave you an answer. Now you ask the same question using technical terms. He already answered the question - better spray pattern. Regardless of how it is acheived, the newer injectors are going to have a better spray pattern. It's a pretty easy idea to conceptualize, as time passes - technology increases, and products improve. Why you chose to go with the same question, only instead questioning the parts involved in the injectors - well, it looks like a strange tactic to me.

MPNick knows his stuff. There have been multiple attempts in the past to say otherwise, and in each case, those people were, for lack of a better phrase "taken to school". If you seriously have questions about the product, I would recommend you call the shop. 732-222-3679. Anyone who has spoken with MPNick for even a short while could tell you that the man knows his stuff, and does not guess about things. Nick has alot of experience, and a very large customer base. I've spent quite alot of time in his shop and I've seen him do some amazing things. I've also watched him handle some real lowlifes with a dignity few could muster. Am I biased? Of course I am - he's a good friend of mine. He saw me through the turbocharging and tuning of my car, the blowing of my engine when I overrevved (I should have listened when he kept asking me to turn the boost down), and the installation of my new engine. Most of the long time members will back me up in what I've said above.

So, any other questions?

idiot... im talking about using stock injectors.... will my car pass inspection if i install this without touching the injectors? Thanks!

 

[RyanJayG]

does your state only do a sniffer inspection, or do they go visual and dig for problems as well?

if only sniffer then it would be fine.. as long as you tune well

 

[1sty]

idiot... im talking about using stock injectors.... will my car pass inspection if i install this without touching the injectors? Thanks!

It depends on your state laws.
Liek I have already mentioned, if your state is one in whihc any alteration to the vehicals emmision system is against the law then no it of coarse will not pass if they see it.

As for an emmisions test, you should be able to tune it to pass.

 

[Bigg Tim]

idiot... im talking about using stock injectors.... will my car pass inspection if i install this without touching the injectors? Thanks!

I live in MD and I passed with NO extra tuning and a 3" exhaust with 1 high flow cat. They plug up to the tail pipe and the OBDII and test it that way here. it took less than 30 seconds. Make sure you have not disconnected the battery or ECU if they do OBDII testing. They need a complete drive cycle to do the test, or they will make you come back later.

 

[Micah]

idiot... im talking about using stock injectors.... will my car pass inspection if i install this without touching the injectors? Thanks!

The unit does support two maps - why not just use a stock map (ie - no changes) to pass inspection. I highly doubt they are going to run your car into much boost while they are inspecting it, you might not even need to worry about it. If you stay with the stock injectors - there is no reason to mess with the mapping too much until you are into boost. Again, and as usual (yep, I'm still redundant like a mofo) this is just my opinion. But I have discussed this unit with MPNick quite a bit, and I'm decently well versed in cars and tuning in general.

oh yeah, thanks for the "idiot" comment. Have fun on the forum!

 

[jred321]

Jred - you asked about the injectors. MPNick gave you an answer. Now you ask the same question using technical terms. He already answered the question - better spray pattern. Regardless of how it is acheived, the newer injectors are going to have a better spray pattern. It's a pretty easy idea to conceptualize, as time passes - technology increases, and products improve. Why you chose to go with the same question, only instead questioning the parts involved in the injectors - well, it looks like a strange tactic to me.

he gave me an answer, but not to the question i tried to ask, so i asked it again in different terms. when you go to order new injectors, you don't go researching saying "i want new style injectors". you run across terms like peak and hold, ball and disk, saturated, pintle, terms like that, so i was wondering what his opinion of the "best" was. new style doesn't mean anything, as there are current companies making "new" injectors that have bad spray patterns, but they are "new", and could be interpretted as new style. there are also advantages and disadvantages to all types of injectors, so i was seeing what he was seeing as the best all around type of injector to get.

 

[kevbo21]

I live in MD and I passed with NO extra tuning and a 3" exhaust with 1 high flow cat. They plug up to the tail pipe and the OBDII and test it that way here. it took less than 30 seconds. Make sure you have not disconnected the battery or ECU if they do OBDII testing. They need a complete drive cycle to do the test, or they will make you come back later.

Hey where did you get the 80mm mass air sessor! Thanks

 

[Micah]

Hey where did you get the 80mm mass air sessor! Thanks

I'm pretty sure he got it from MPI - you can PM MPNick for pricing.

 

[Bigg Tim]

^^^What he said. Nick has them and it will help to support more flow for more power. Right now it's not in, I had Nick get it re-calibrated because it was one of the first 2 and it seemed to be a little off.