The problem is in 1st gear the car will accelerate and boost just fine when started up. Once you shift to 2nd gear and accelerate the car will spit and sputter at approx 3500rpm. After that the car will stop boosting no matter what gear you are in. Any ideas? The car is stock besides an Injen intake.
Mazdaspeed Protege Boosting Problems
- Thread starter rx7fc3s87
- Start date
myersmsp1992
Member
i just put an injen in myself nd my boost is doing the same thing i have no clue what it is
- :
- 2003.5 Mazdaspeed Protege
maybe too much air not enough fuel
fatti03msp
Contributor
- :
- 03 MSP & 91 RX-7 & 00 1500
my guess is a possible vac leak
littlemimus
fear the mighty sandvich!
- :
- Mazdaspeed protege 2003
ha other way around buddy. to much fuel for to little air.
check the couplers. my friends coupler on the intercooler wasnt tight and it was leaking so he would boost only to 3 and it would stumble all over the place .
Maxx Mazda
Contributor
- :
- Stock P5
If it's pinging then your ECU si pulling timing. What other ideas do you need? How much boost and what octane are you running?
I don't know how much the turbo is boosting. It should be stock though. I have a feeling it is overboosting because the knock sensor keeps tripping under acceleration which causes it to sputter. I don't here it pinging at all and it is 91 octane.
- :
- 2003.5 Mazdaspeed Protege
ya buy an atp wastegate
Sounds like your car is hitting the infamous fuel cut. Like everyone else said buy a wastegAte actuator and that should fix it. If not then you prolly need to replace your intercooler pipes with harpipes cause I had this same problem and my hoses were cracked and busted.
