Recently, the question came up of "re-chipping" the 2.0 L engine. Although I've already posted this information, it's buried in another thread and therefore won't be easily accessible to those searching for this information, in particular. Consequently, I'm reposting it in a separate thread to enhance its visibility.
In 2001 (for that year only), Mazda came out with a special version of the Protege called the MP3. Engine mods were minimal and consisted of a reprogrammed PCM that permitted a more advanced ignition timing curve. Unlike the stock PCM, it could "read" the octane rating of the fuel in use and adjust the ignition advance accordingly. Thus, one could run 87 octane with reduced timing for economy or use plus or premium with correspondingly more advanced timing and greater HP output. The part # is FS9N-18-881C.
Additionally, a tuned Racing beat, low restriction muffler was fitted along with, I believe, a larger crossover pipe.
Finally, the intake manifold was less restrictive due to the absence of VTCS (variable tumble control system). VTCS consists of a set of butterflies inside the manifold that helps provide lower emissions during cold startup. After warmup is complete, the butterflies are fully open but still provide some restriction due to the presence of the plates and shaft. In the standard protege, this assembly permits the car to have a ULEV emissions classification instead of the LEV rating of the MP3. Incidently, VTCS can be removed from the stock Protege intake manifold.
There were no other engine mods and the intake system (other than VTCS) was completely stock, identical to the standard Protege.
Results
FS-DE (stock)
130 BHP (97 kW) @ 6,000 rpm
135 lbs/ft (183 N-m) torque @ 4,000 rpm
FS-DE (MP3 version)
140 BHP (104 kW) @ 6,000 rpm
142 lbs/ft (193 N-m) torque @ 4,500 rpm
Three relatively simple mods provided an increase of 8% BHP and 5% torque. Not a lot perhaps but it shows what a few simple mods can do.
Happy Motoring!
In 2001 (for that year only), Mazda came out with a special version of the Protege called the MP3. Engine mods were minimal and consisted of a reprogrammed PCM that permitted a more advanced ignition timing curve. Unlike the stock PCM, it could "read" the octane rating of the fuel in use and adjust the ignition advance accordingly. Thus, one could run 87 octane with reduced timing for economy or use plus or premium with correspondingly more advanced timing and greater HP output. The part # is FS9N-18-881C.
Additionally, a tuned Racing beat, low restriction muffler was fitted along with, I believe, a larger crossover pipe.
Finally, the intake manifold was less restrictive due to the absence of VTCS (variable tumble control system). VTCS consists of a set of butterflies inside the manifold that helps provide lower emissions during cold startup. After warmup is complete, the butterflies are fully open but still provide some restriction due to the presence of the plates and shaft. In the standard protege, this assembly permits the car to have a ULEV emissions classification instead of the LEV rating of the MP3. Incidently, VTCS can be removed from the stock Protege intake manifold.
There were no other engine mods and the intake system (other than VTCS) was completely stock, identical to the standard Protege.
Results
FS-DE (stock)
130 BHP (97 kW) @ 6,000 rpm
135 lbs/ft (183 N-m) torque @ 4,000 rpm
FS-DE (MP3 version)
140 BHP (104 kW) @ 6,000 rpm
142 lbs/ft (193 N-m) torque @ 4,500 rpm
Three relatively simple mods provided an increase of 8% BHP and 5% torque. Not a lot perhaps but it shows what a few simple mods can do.
Happy Motoring!
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