hesitation

Just got the car back from having the top end fully re build and a brand new turbo. The thing is when I got it back and after I drove it a couple hundred miles I went to do a pull and it’s making a lot of air like if the turbo is just blowing it out and the car isn’t making the full boost like...

Year/Make/Model: 2008 Mazdaspeed3 Mileage: ~165K chassis / ~5K motor Location: Arizona Concern: Acceleration feel under light throttle DTC's: None Modifications: Stock block, BNR S3V4, 3” intake, catless DP, 3” exhaust, etc. ECU/Tuning Software: Cobb Accessport V3 Tuner: DramaTuned Is the...

Hey there, I’m having a problem with my 2008 Speed 3. When I’m travelling along the highway with cruise control on and I go on a slight incline, the engine begins to burble/misfire after that slight load is introduced. It doesn’t seem to do it under full boost conditions. Only just at low rpms...

EDIT: Problem solved, both my HPFP housings were bad. New HPFP housing solved the problem. More detailed explanation in a response posted below. Hey everyone, been pulling my hair on this one. Here's the scenario. Car is running fine (2011 speed3), for 1.5 years. I buy brand new Corksport HPFP...