Australian P5 Non turbo converted to MSP Spec Turbo

[mazda_sp20]

Hi everyone,

I recently bought a 95% complete msp turbo kit from philly off these forums.

everything went accordingly except for the msp ecu, was not compatible with our loom and did not have a msp loom.

I went with a aftermarket ecu to get the car going.

With our first day of tuning, we're noticing that its running out of fuel really quick at around 4200-4700rpm with the injectors maxing out.

The boost is factory spiking of 12psi and holding a nice consistant 10psi.



Has anyone else had this problem, going from non turbo to turbo with the same motor and injectors/pump/reg?

 

[Wagonbacker9]

that boost is a little high for a stock setup... normal 6, or a little more.

 

[mazda_sp20]

the other question is...

1. has anyone here used a forge wastegate actuator with a 4 or 6psi spring rather than the usual preset 10psi?

if so as anyone got one forsale or point me in the right direction

2. has anyone here used the drop in injectors from corksport.com and do they work well

 

[lasslo]

Tried progressive fuelregulator to get the fuelpressure higher when the bost comes?

 

[big Lou]

What ems do you have? I never had any fuel issues with my splitsecond.

 

[mazda_sp20]

im using a ems stinger 4424

http://www.emsnorthamerica.com/

we tried running standalone, but there is so many other functions that the ecu controls apart from running the car,

so

the standard non turbo ecu is wired up and running. we disconnected the ignition and fuel output, so it still believes that its running the car, so the idle control and aircon and abs and warning lights on the dash all act normal.

we wired up the new ems with a new custom camshaft sync sensor running of the intake camshaft so its got its own trigger, and running the ignition and fuel from the standalone ecu, and controlling the radiator fans with its outputs.

 

[AusOrion]

im using a ems stinger 4424

http://www.emsnorthamerica.com/

we tried running standalone, but there is so many other functions that the ecu controls apart from running the car,

so

the standard non turbo ecu is wired up and running. we disconnected the ignition and fuel output, so it still believes that its running the car, so the idle control and aircon and abs and warning lights on the dash all act normal.

we wired up the new ems with a new custom camshaft sync sensor running of the intake camshaft so its got its own trigger, and running the ignition and fuel from the standalone ecu, and controlling the radiator fans with its outputs.

You could have used a stand alone to do what your EMS Stinger is doing and that is just to run fuel and ignition. But then you are probably paying a high price for these functions.

Dont know if you needed a second cam sensor. I have had success with just splicing the Cam Angle and Crank Angle sensors within the passenger compartment. This eliminates interference from other things in the engine bay.

As for your fuel issues, perhaps using an aftermarket fuel pressure regulator to up the pressure. An alternate method could be get WRX injectors which should be able to be sourced fairly easily here in Oz.

Oh, and pics please!

 

[Wagonbacker9]

while that may help, These cars run 10-12 lbs on noting more than an SSAFC on the stock ECU without fuel issues, I'm just afraid theres something else going on.

 

[mazda_sp20]

installed a set of gdb wrx top feed 440cc injectors and sorted that problem

 

[Maxx Mazda]

He can't run an AFC. Austrailian cars are OBD-I not II like North American cars.

 

[azmp5]

maybe there is an aftermarket wastegate on that turbo.