03mazspeedproto
Member
well, no i havent tried starting it againg because the motor is dry.
Blown engine!!! MSP down
- Thread starter 03mazspeedproto
- Start date
03mazspeedproto
Member
the oil came on as i was slowing down... i put it in gear to see what would happen, it wasnt good so i took it out. i turn off the car the rest of the way as i stopped.
03mazspeedproto
Member
i must agree i dont think i would have blown it without it. yet i never researched it... i kinda just went by a few peoples word and got tired of hitting the awful fuel cut. not much i can do now, so im not going to point fingers.
03mazspeedproto
Member
03mazspeedproto
Member
i think this is going to be a pain in the ass. anyone been through this yet.... if so what was the damage cost?
- :
- 2003.5 Titanium Gray MSP #1699
At a minimum, it's going to be several hundred $$s for a new motor (that's for used) & then a LOT of work to pull yours & put the new one in. Then you can either turn down the boost & be smart about it or build up your motor if you plan on making more power.
- :
- 2001 Mazda MP3
MINIMUM COST:
new motor: CHEAPEST: $400
swap by a shop with new motor $900
Misc: $300
$1600- and thats the absolute cheapest.
new motor: CHEAPEST: $400
swap by a shop with new motor $900
Misc: $300
$1600- and thats the absolute cheapest.
FCDs suck if you do not add fuel when they comes on. Think about what goes on. The pcm is shutting down the engine so you do not blow it up. The FCD is blocking or reducing the MAF voltage from the PCM. It will send a lower signal to the PCM, so it thinks that there is less air flow. Now it is giving less fuel so you lean out. On Deans car we have an electric cut out. When we open it up we run the 'B' map on the MPI. It is a richer fuel curve that is needed for the open exhaust.03mazspeedproto said:
Some may be able to run more boost if things work out with their setup, air temps, what gear they are in. But because you are playing with fire, sooner or later things go very wrong. You more then likely sent a rod out the side of your block. If the bent and the bottom of piston hit the counterweight you need to check a few things. If the pin boss on the piston is gone the piston may have ran up and hit the valves on that cylinder also.
- :
- 2001 Mazda MP3
yeap. teh suck 
oh and tekkie, we're gonna have to meet up sometime after we both have our stuff installed
oh and tekkie, we're gonna have to meet up sometime after we both have our stuff installed
I have not even started yet, I am going to start looking for a block tomorrow 
- :
- 2001 Mazda MP3
tekkie, I'll have my old block, maybe not soon enough for you though?
(ITS DANGEROUS PLAYING WITH FCD's )
The FCD is any device that prevents the stock ECU from cutting fuel to the rear rotor when the boost exceeds a preset boost level. This maximum safe boost level and behavior is coded into the firm ware in the engine management unit and can not be changed without reprogramming the ECU. The maximum allowed boost pressure is about 7psi in the Protege. The way an FCD defeats the fuel cut is by lying to the ECU about what the boost pressure is. The FCD is placed between the boost sensor and the ECU where it modifies the boost pressure signal by some amount so that as the boost pressure rises above the preset "safe limit", the ECU continues to see a signal that is below the limit. There are a couple of immediate consequences to this fooling around. As the boost rises, the ECU must increase the amount of fuel being delivered to the engine in order to maintain safe and efficient operation. As the FCD starts lying to the ECU, the ECU will begin to under-compensate for the rise in pressure leading to a gradual leaning of the air-fuel mixture. The amount of error increases as the boost rises. For relatively small errors, the only penalty is efficiency. As the error gets larger, however, detonation becomes likely, exacerbated by the high boost pressures and accompanying high intake charge temperatures. Detonation under these conditions will quickly kill an engine. So, before we go any further, be forewarned that using an FCD and increasing boost pressure without also compensating for the ECU error with fuel enrichment (and preferably more efficient intercooling) can cause serious damage to your engine!
The FCD is any device that prevents the stock ECU from cutting fuel to the rear rotor when the boost exceeds a preset boost level. This maximum safe boost level and behavior is coded into the firm ware in the engine management unit and can not be changed without reprogramming the ECU. The maximum allowed boost pressure is about 7psi in the Protege. The way an FCD defeats the fuel cut is by lying to the ECU about what the boost pressure is. The FCD is placed between the boost sensor and the ECU where it modifies the boost pressure signal by some amount so that as the boost pressure rises above the preset "safe limit", the ECU continues to see a signal that is below the limit. There are a couple of immediate consequences to this fooling around. As the boost rises, the ECU must increase the amount of fuel being delivered to the engine in order to maintain safe and efficient operation. As the FCD starts lying to the ECU, the ECU will begin to under-compensate for the rise in pressure leading to a gradual leaning of the air-fuel mixture. The amount of error increases as the boost rises. For relatively small errors, the only penalty is efficiency. As the error gets larger, however, detonation becomes likely, exacerbated by the high boost pressures and accompanying high intake charge temperatures. Detonation under these conditions will quickly kill an engine. So, before we go any further, be forewarned that using an FCD and increasing boost pressure without also compensating for the ECU error with fuel enrichment (and preferably more efficient intercooling) can cause serious damage to your engine!
