MPI Tuner Anyone?

[MPNick]

i just checked... mine has 5 wires(nana)

The five wire sensor is a better way to go. It is still not the same as the dyno but it is better then the most AFR kits out there.


Thanks again


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

 

[LinuxRacr]

How cold does it get in the winter snow belt that you live in? I am sure that people who live in cold parts of the contry have starting problems.


Thanks again


Later.........Nick

I know deckedoutmp5 had some issues with cold starting..

 

[freekwonder]

pat - i think travs (dekckoutmp5) problems were mainly the start up maps he had were wrong. he got better maps from turboage and had little to no problems starting. plus i dont think it helped that one of his coil packs were screwed up and one of his injectors was stuck open.

also pat on a side note. my wife and i need to come to DFW and hang out with you.

 

[igdrasil]

pat - i think travs (dekckoutmp5) problems were mainly the start up maps he had were wrong. he got better maps from turboage and had little to no problems starting. plus i dont think it helped that one of his coil packs were screwed up and one of his injectors was stuck open.

also pat on a side note. my wife and i need to come to DFW and hang out with you.

those are issues...or not?

I remember when he got the new maps, Before them, He had to crank the car 10 times. With the new map, he had to crank it 3 times.

 

[70]

those are issues...or not?

I remember when he got the new maps, Before them, He had to crank the car 10 times. With the new map, he had to crank it 3 times.

Yep, those are issues. But as I have said, propoer tuning fixed them.

And some of the problems were not caused because the injectors were larger!

 

[LinuxRacr]

pat - i think travs (dekckoutmp5) problems were mainly the start up maps he had were wrong. he got better maps from turboage and had little to no problems starting. plus i dont think it helped that one of his coil packs were screwed up and one of his injectors was stuck open.

also pat on a side note. my wife and i need to come to DFW and hang out with you.

Ahhhhhaaa! Come on down!

 

[MPNick]

Yep, those are issues. But as I have said, propoer tuning fixed them.

And some of the problems were not caused because the injectors were larger!

Are all of the problems fixed? It would be nice if people that are running the bigger injectors would post about how they work on the Protege. So far the only one who has made any post about them was Terry. It seems to me that from is post you can see that the bigger injectors had problems.

All of these other post's that defend the bigger injectors are just opinions. What does now he only cranks the engine three times to start it mean? That does not sound like it is great to me.


Thanks again


Later........Nick

 

[MPNick]

pat - he got better maps from turboage and had little to no problems starting.

Little to no starting problems. How much starting problem to you get with stock injectors?


Thanks again


Later.......Nick

 

[Kooldino]

I figured I'd chime in here and mention that I get occasional cold start problems since i put the MPI tuner in my car. If it's REALLY cold and I let the car sit for a day or two, I'll sometimes go to turn it over, and just as it's about to start, it'll die. After that, it starts up fine.

 

[MPNick]

I figured I'd chime in here and mention that I get occasional cold start problems since i put the MPI tuner in my car. If it's REALLY cold and I let the car sit for a day or two, I'll sometimes go to turn it over, and just as it's about to start, it'll die. After that, it starts up fine.

Dana, are you tuning the MAF yet? How did you car start last winter with the turbo kit and exhaust system, with the high flow cat? When you and I went out for a drive I told you that I felt you needed to add fuel at idle and light throttle. Did you ever try to add fuel at idle with the MAF? This is all part of tuning your car. You made more the the MPI Tuner change.


Thanks again


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

 

[igdrasil]

mine do that too and im stock...everyday i start the car it will missfire if i try to accelerate...why does that happens?

 

[MPNick]

mine do that too and im stock...everyday i start the car it will missfire if i try to accelerate...why does that happens?

If you have a free flow exhaust, or maybe a breathter on your valve cover, you will be a little on the lean side. This will cause I cold start problem. You need to add a small amount of fuel at idle and light throttle. May also hear some very small popping sounds from you exhaust system every now and then if you are lean.


Thanks again


later.............Nick

 

[acidbug]

Could be the plugs you are using..if they are 2 steps colder than stock..you will get that type of issue..when it's cold outside..the ecu dumps lots of fuel to get the car to warm up..and as soon as it does..it begins to pull fuel!

When i had the colder plugs in i had similar problems to what dana is having..but since i changed my plugs...everything has been good!

No problems with cold starts now..Even if i let the car sit for 1 or 2 days!

Chas

 

[Kooldino]

Dana, are you tuning the MAF yet?

Nah, I have zero reason to do MAF tune right now.

How did you car start last winter with the turbo kit and exhaust system, with the high flow cat?

I turned the key, it'd kick right up.

When you and I went out for a drive I told you that I felt you needed to add fuel at idle and light throttle. Did you ever try to add fuel at idle with the MAF? This is all part of tuning your car. You made more the the MPI Tuner change.

No, I didn't add any fuel off of boost. There's absolutely no reason that I should. In fact, the car didn't run well at first in that one area where you ran extra fuel on my car while off of boost. I don't understand why you'd want me to run more fuel off of boost...

My GUESS is that the reason for the occasional start issue is because the MPI tuner is in between the ECU and the coils, and maybe it doesn't have the juice to fire the coils correctly at first.

 

[Kooldino]

mine do that too and im stock...everyday i start the car it will missfire if i try to accelerate...why does that happens?

That's not the same problem I have at all. Check your plug gap and make sure they're not too cold.

 

[Kooldino]

Could be the plugs you are using..if they are 2 steps colder than stock..you will get that type of issue..when it's cold outside..the ecu dumps lots of fuel to get the car to warm up..and as soon as it does..it begins to pull fuel!

My plugs are one stage colder than stock.

When I ran the 7 series (2 stage colder) plugs, the car didn't have any start issues. The 6 series plugs and the MPI tuner went in at the same time.

And my problem is getting the car to turn over, not "once it starts"

 

[Bigg Tim]

I haven't had any cold start issues with mine, and I have the 1 step colder plugs in. Kinda wierd, is your battery maybe starting to take a crap?

 

[MPNick]

Nah, I have zero reason to do MAF tune right now.


I turned the key, it'd kick right up.


No, I didn't add any fuel off of boost. There's absolutely no reason that I should. I don't understand why you'd want me to run more fuel off of boost...

I know when we drove your car it had a few lean pops out of the exhaust. When we added some timing you can hear it more. You have a turbo kit, free flow exhaust system and the stock air filter housing is not there any longer. You need to adjust for that change. Maybe a extra crank when it is real cold is not a problem for some. Why not tune for the problem and get it to start like stock?


Thanks again


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

 

[freekwonder]

Little to no starting problems. How much starting problem to you get with stock injectors?


Thanks again


Later.......Nick

Nick, i honestly i cant remember. i dont know about extreme cold. but after the new maps when ever i would see him start the car it would start right up. but that was only after sitting for a few hours. sitting all night in the cold im not sure if he had any problems after the new maps. with stock injectors i believe his car start up right away i think it was mainly with the 440cc he had problems.

 

[PaulMP3]

I figured I'd chime in here and mention that I get occasional cold start problems since i put the MPI tuner in my car. If it's REALLY cold and I let the car sit for a day or two, I'll sometimes go to turn it over, and just as it's about to start, it'll die. After that, it starts up fine.

werd... i have the same issue... it always starts first try, but sometimes it takes the xtra second or so to crank over.. I thought it was because my battery sucks... which it does.