MSP ECU 4500rpm fuel/ign cut?

[igdrasil]

Does anyone have any idea what could be happening? I swapped ECUs on a Protege ES, now using a MSP ECU and everytime in 4th gear @ 4500-4700 it cuts. Not sure whats happening.

I dont have xperience with the MSP ECU so I thought I should ask. I have searched for a while, but still got no clue.

[miltont]

Tito seguimos con el problema. De hecho ahora con la cableria que me distes el carro empieza a escopetear por el muffler, como si no estuviera quemando gasolina bien.




Does anyone have any idea what could be happening? I swapped ECUs on a Protege ES, now using a MSP ECU and everytime in 4th gear @ 4500-4700 it cuts. Not sure whats happening.

I dont have xperience with the MSP ECU so I thought I should ask. I have searched for a while, but still got no clue.

[smo0f]

oh good thing you made it easy for everyone to understand why he is experiencing that problem. sorry my spanish is bad, what does 'el' mean

[miltont]

el= the
when i say el carro in spanish i mean in english the car.
Sorry i cant express good on english.
Igrdrasil will make tha spanish to english traduction.

oh good thing you made it easy for everyone to understand why he is experiencing that problem. sorry my spanish is bad, what does 'el' mean

[smo0f]

heh, i know el means the, that was a joke, you know, i picked the easiest word...nevermind. make the traduction igrdrasil!

[smo0f]

backfire through the exhaust as if it's not burning gas well?

[miltont]

Yes thats right.
We change spark plug wires yesterday, but this just didnt resolve issue of the 4500rpm engine stumbling, Like Fuel Cut Problem or Ignition.
We replaced other parts also and didnt resolve problem.




backfire through the exhaust as if it's not burning gas well?

[smo0f]

well fuel cut is a standard issue with msp's, and thus their ecu. don't think it's supposed to happen at 4500 rpm unless the boost is turned up high

[miltont]

we lowered the boost and it still does the problem




well fuel cut is a standard issue with msp's, and thus their ecu. don't think it's supposed to happen at 4500 rpm unless the boost is turned up high

[orng1]

No fuel cut, we just max out the MAF and after that it just dumps fuel. What size turbo are you guys running?

[smo0f]

yeah, you need to figure out what makes your car different than a stock msp. so far you share the ecu in common, but something else has gotta be fubar'd

[igdrasil]

Thanks for all the help people...Its a wrx IHI turbo setup...More pics, video, dyno and info about the car here:

http://www.msprotege.com/forum/showthread.php?t=96489

We switched and fixed some stuff; back to stock fpr, new plugs, coils, wires, selenoids.

Milton, I heard the car backfiring when you left me home, theres still something we need to check, remember that your FPR was jammed and pushing too much fuel thru the injectors...right? Maybe now the injectors are bad.

If this still doesnt solves the issue, we will need to check the MAF voltage and see what it tells. It could be a boost leak somewhere hidden, causing the MAF to see too much air...still need to monitor MAF voltage which we kept stock.

Milton...let me know.

[igdrasil]

RFO: Bad fuel pump (walbro)

[jeffmsp]

well does the WRX IHI flow the same as a T25R? If not your fuel/ignition mapping is wrong. why not sell the msp ecu and get a afc? I dont see why you would want an msp ECU with a different turbo than T25R?>..

[igdrasil]

well does the WRX IHI flow the same as a T25R? If not your fuel/ignition mapping is wrong. why not sell the msp ecu and get a afc? I dont see why you would want an msp ECU with a different turbo than T25R?>..

Well, this engine is going with forged rods, modified stock pistons, microtech LT10s with STI injectors.

So...the ECU is for sale. $200

[ZenProtege]

Does it seem like this?...sounds just like my problem

http://vids.myspace.com/index.cfm?fuseaction=vids.individual&videoID=733330463&n=2


I've checked everything and determined it had to be the maf sensor. My new one should be in any day now to affirm whether or not it's the prob.