03.5 mazdaspeed protege problem

HBrown

Member
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03 mazdaspeed protege
I have a mazda protege and it runs good pulls hard when cold, but when it worms up it doesn't like to pull under boost. Holds 6psi all day but when worm if u move to positive pressure its like the boost is there just no go?
 
Lol does that wastgate open under vacuum? Because the wastgate holds no vacuum.
 
is the car stock? if so then what you may be experiencing is just the nature of a msp.
 
Yeah sounds like your experiencing the MSP stock tune.. Big prob is they run really rich so its almost like the engine is bogging out.
 
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