If you just bought it, take it to the dealer and have them check it out.
If you don't want to go back to the dealer I think you should get and install a boost gauge. This will tell you if you have a vacume leak. It will also tell you how much boost you're running and possibly if your turbo is bad.
The bogging you are reffering to could be a hesitation. If you are in an un-flashed 03 msp, you will feel some pretty bad hesitation under 4Krpms at full throttle. If you just use partial throttle and seem to get cleaner pulls, this is probably it. You can help this by a couple ways:
- You could reset your ECU by unpluging your battery for 10 minutes and draining the power out of your system by steping on the brake pedal. This should eliminate most of your hesitation for a short period, but once the ECU relearns your driving habits the hesitation will come back.
- You could take it to a Mazda dealer and have them give you the ECU flash. There is a TSB out on this and a search of this forum will give you all the info you need. This ECU flash advances the timing on your car to compensate for excessive fuel delivery. The problem with this is the advanced timing levels become dangerous at higher boost levels (10+ psi). If you plan on raising the boost it is better to not have the flash done. You car may allready have it done, but since it's a 03 it's possible it does not.
- Get an FMIC. Since your stock sidemount intercooler is so small and ineffective, you are going to experience heat soak in the summer. The CAI helps cause the temp sensor reads colder air, but a good FMIC will help keeps the temps down enough that hesitation is vertually non-existent over 3000rpms. If your car feels like it pulls really hard the first 10 minutes of the day, but is a little bit of a dog afterward and in the afternoons, this is from Heatsoak and an FMIC will really help this. Heatsoak induced hesitation isn't as bad in the winter, but depending on your location could be very noticable in the summer months. What's the temp like where you're at?
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Also, if your HKS BOV is venting to atmosphere that will lead to increased hesitation as well. Your car is allready running very rich, if you vent that air it runs even richer causing a bogging sensation. If you recirculate that air back into your intake it may help decrease the bogging after shifting.
MSP #167 said:
that has nothing to do with his problem.
Yeah it does. We don't know that his hesitation and blue smoke are coming from the same issue. They could be completly unrelated. The ecu flash is a possible solution for eliminating that specific problem. Aside from the blue smoke, all of his symptoms point to a normally running, un modified, unflashed 03 msp. I drive an unflashed one with a perfect turbo and my car was just like his prior to my mods (minus the blue smoke).
Welcome to the forums btw 
