FREE MPI help!

[MPNick]

broke 1st motor on bare mpi and turbo module (bad turbo module, never made it to work right)
.

What about this engine. This was before I sold you the MPI.

http://www.msprotege.com/vbb225/showthread.php?s=&threadid=21883

I know that you had problems with the older software and your laptop. You did get things working right.

http://www.msprotege.com/forum/showthread.php?t=79181&highlight=igdrasil

Here you broke your second engine. A rod broke but the pistons were find. You even pointed out that there are "no signs of detonation or pinging"

http://www.msprotege.com/forum/showthread.php?t=70821&page=2&pp=15&highlight=igdrasil

Here you have your third engine in the car. You now when the right way with extra injectors.

http://www.msprotege.com/forum/showthread.php?t=70821&page=3&pp=15&highlight=igdrasil


Here you had just dynoed your car and made 224whp. You were very happy that you had got your car to run right after almost a year of blowing engines and screwing around.
http://www.msprotege.com/forum/showthread.php?t=85273&highlight=igdrasil

So like I said already, not sure where you are going with this. All I know is that I do not see where you had such great luck with the RRFPR. You blew engines before, during and after the MPI.

 

[wicked]

and nick slids in for the win!!!!!!!!!!!!!!!!!!!!!(spin)


BTW,I still can't get the damn cut out

What about this engine. This was before I sold you the MPI.

http://www.msprotege.com/vbb225/showthread.php?s=&threadid=21883

I know that you had problems with the older software and your laptop. You did get things working right.

http://www.msprotege.com/forum/showthread.php?t=79181&highlight=igdrasil

Here you broke your second engine. A rod broke but the pistons were find. You even pointed out that there are "no signs of detonation or pinging"

http://www.msprotege.com/forum/showthread.php?t=70821&page=2&pp=15&highlight=igdrasil

Here you have your third engine in the car. You now when the right way with extra injectors.

http://www.msprotege.com/forum/showthread.php?t=70821&page=3&pp=15&highlight=igdrasil


Here you had just dynoed your car and made 224whp. You were very happy that you had got your car to run right after almost a year of blowing engines and screwing around.
http://www.msprotege.com/forum/showthread.php?t=85273&highlight=igdrasil

So like I said already, not sure where you are going with this. All I know is that I do not see where you had such great luck with the RRFPR. You blew engines before, during and after the MPI.

 

[MPNick]

and nick slids in for the win!!!!!!!!!!!!!!!!!!!!!(spin)


BTW,I still can't get the damn cut out

Send me the datalog. Run it until you hit the cutout and try to hold it there for as long as you can while you data log.

mp23cc@aol.com

 

[wicked]

ok nick,I sent it,but I am going to post it here as well.

BTW,this is not a RAW file,so it's not going to play as a datalog,it's for you to open and view as PID data only.

I marked where the fuel cut is,and take a look at the RPM range,it's dips as well,and recovers.


this is the best I have gotten the car,and I am adding like 40's with the secondaries,but the cut is DEFINATLY still there.

 

[Bigg Tim]

ok nick,I sent it,but I am going to post it here as well.

BTW,this is not a RAW file,so it's not going to play as a datalog,it's for you to open and view as PID data only.

I marked where the fuel cut is,and take a look at the RPM range,it's dips as well,and recovers.


this is the best I have gotten the car,and I am adding like 40's with the secondaries,but the cut is DEFINATLY still there.

Looking at this, if it was a MAF generated fuel cut, then you would have had the cut from 4780 RPM (13:12:49 time) all the way to the end. This is showing the input voltage over 5v, which doesn't mean anything in regards to the MPI because you can see it limiting the output voltage to 4.82. What doesn't make sense is that you have 2 area's that hit the "fuel cut" that are not exceeding 5v input and have an even lower output. Don't know what is making those area's hit it if the rest isn't.(dunno)

40's with xtra injectors is not a lot, have you went to 100's or more and tried that? You should hit a too rich wall with those numbers and there should be no lean spots on the log. Can we get the .raw file also when you do it this way? That way we can see your map and see where abouts it's happening. It may start to happen in between the RPM ranges on the map, so the actual logg will show the RPM's as they climb and we could see when it really happens, not that that would do much more then what this shows.

Do you see the O2 getting clamped when the switch comes on? When it comes on, do you seee any difference in AFR??? It should go rich, which I think I see in the beginning of the log. Also, why is the upper RPM's so lean? That makes me think even more that this is a not enough fuel issue, you need to make those 40's a lot larger to get rid of the 14.5 AFR up top when you are not experiencing the fuel cut.

 

[mazdaspeed75]

v

Dm i have only like 18 s up top rpm and get a 12.2 a/f Of course he has a bigger turbo too.

 

[MPNick]

Dm i have only like 18 s up top rpm and get a 12.2 a/f Of course he has a bigger turbo too.

Yes but you are adding fuel with your stock injectors. He is not adding fuel with the stock injectors.

 

[mazdaspeed75]

oh

oh ok Yea i see . Nick i tried calling you . I wanted to talk to you about a motor build. What kind of lead time to you have and what time would be good after the first . I may call you tomorrow . Tired of playing with 11 1/2 psi .

 

[03.5MSP]

quick question about MPI. If i get it tuned @ 9psi, and a/f ratio at 11.8. Will that same a/f ratio be @ 8psi, or do you have to retune for different psi. Sorry to thread jack.

 

[Bigg Tim]

quick question about MPI. If i get it tuned @ 9psi, and a/f ratio at 11.8. Will that same a/f ratio be @ 8psi, or do you have to retune for different psi. Sorry to thread jack.

YUP, You will have too much fuel then. You always have to tune when you change the boost. Less boost requires less fuel and can have a little more timing then at 9-10. But there can be 2 maps on the MPI so you can flip a switch to the 8psi map if you lower it. Or you can have a race map and a street map.

 

[mazdaspeed75]

n

Big Timm You still on the stock motor. I was wondering what is the highest pis you have ran and how much timmimg did you pull.

 

[JOMO]

Ok, so I should get the extra injectors. Are those the current prices in the christmas thread. I'll have to see maybe if that could be my christmas gift.

 

[wicked]

Looking at this, if it was a MAF generated fuel cut, then you would have had the cut from 4780 RPM (13:12:49 time) all the way to the end. This is showing the input voltage over 5v, which doesn't mean anything in regards to the MPI because you can see it limiting the output voltage to 4.82. What doesn't make sense is that you have 2 area's that hit the "fuel cut" that are not exceeding 5v input and have an even lower output. Don't know what is making those area's hit it if the rest isn't.(dunno)

40's with xtra injectors is not a lot, have you went to 100's or more and tried that? You should hit a too rich wall with those numbers and there should be no lean spots on the log. Can we get the .raw file also when you do it this way? That way we can see your map and see where abouts it's happening. It may start to happen in between the RPM ranges on the map, so the actual logg will show the RPM's as they climb and we could see when it really happens, not that that would do much more then what this shows.

Do you see the O2 getting clamped when the switch comes on? When it comes on, do you seee any difference in AFR??? It should go rich, which I think I see in the beginning of the log. Also, why is the upper RPM's so lean? That makes me think even more that this is a not enough fuel issue, you need to make those 40's a lot larger to get rid of the 14.5 AFR up top when you are not experiencing the fuel cut.

yeah,I see what your getting at,I am going to leep on this,and see if I can findit.

BTW,running a 14.0-14.7 AF/R should never fuel cut,it should be very well off at 10 PSI,infact newer cars running stockwide bands will tune fully in closed loop,and will keep stoichiometeric AF/Rs all the way through the power band,boosted or not.



thanks for the help tim,I am going to keep on this.

 

[MPNick]

oh ok Yea i see . Nick i tried calling you . I wanted to talk to you about a motor build. What kind of lead time to you have and what time would be good after the first . I may call you tomorrow . Tired of playing with 11 1/2 psi .

C-P is very good to me. I can turn an engine around in about 4 weeks. Call anytime after 9am.

 

[MPNick]

quick question about MPI. If i get it tuned @ 9psi, and a/f ratio at 11.8. Will that same a/f ratio be @ 8psi, or do you have to retune for different psi. Sorry to thread jack.

Running a mass air like we do when we are stock helps keep the AFR in check for small boost changes. You will be fine.

 

[MPNick]

Ok, so I should get the extra injectors. Are those the current prices in the christmas thread. I'll have to see maybe if that could be my christmas gift.

Yes you should.
yes they are.
only if you have been good.

 

[MPNick]

yeah,I see what your getting at,I am going to leep on this,and see if I can findit.

BTW,running a 14.0-14.7 AF/R should never fuel cut,it should be very well off at 10 PSI,infact newer cars running stockwide bands will tune fully in closed loop,and will keep stoichiometeric AF/Rs all the way through the power band,boosted or not.
thanks for the help tim,I am going to keep on this.

.

Yes you can be 14s and get fuel cut, it depend on air flow and temps.
Yes some new cars like the A4 run 14s at full boost.

I would love to see a data log.

 

[mazdaspeed75]

;

Nick what about a bigger maf the 80 mm Is that necessary .

 

[brealmp3]

ok i have a few quick ?, i'm looking at buying the mpi that is in the f/s section right now and the seller doesn't know if he has the old or newer turbo module. is there any way to tell? and what are the major differences?

thanks

 

[Bigg Tim]

ok i have a few quick ?, i'm looking at buying the mpi that is in the f/s section right now and the seller doesn't know if he has the old or newer turbo module. is there any way to tell? and what are the major differences?

thanks

It doesn't matter, they will all work. The only real differnenc eis the lack of the coolant clamp which the MSP's don't need. You will be fine with either. Ask him if there are yellow and/or purple wires. If yes to either, then you will be set!!!