Need help

[devindusza12]

I have 2007 mazdaspeed 6. I have had it for about 2 months and have noticed an ongoing issue with my boost pressure readings on my accessport. 4th gear and up will regularly hit 22-23 psi and stay around there but 2nd and 3rd gear tend to only be hitting 17-18 psi. At first I thought it was just tuned per gear but i have seen boost jump up to 20-21 psi occasionally and the car feels a lot stronger. Please let me know if you know the issue.

[Vansquish]

What modifications are on the car. Please post the entire list, as that will help us diagnose your car.

[devindusza12]

Bnr s3 turbo
3 bar map
3.5" intake
High pressure fuel internals
3" catted down pipe
3" custom exhaust with 14" magnaflow glass pack
3.5" turbo inlet pipe
Cobb electronic boost controller
Cobb accessport (freektuned by Justin)
Go fast bits bov
Cpe tmi
Oil catch can
Engine has between 70k-80k miles

[Vansquish]

Thanks. Now it would be useful to have some WOT datalogs that replicate the problems you're trying to diagnose. To take a WOT datalog properly, find a flat and empty stretch of road. In second, third, or fourth gear (preferably third or fourth), get up to around 2500RPM, start datalogging, and then go WOT from around 3000RPM up to about 6000RPM, then end datalogging.

Post the logs on the forum, and we'll see what we can see.

Please make sure that you are datalogging at least the following:
Accelerator Pedal Position
Actual AFR
Boost Pressure
Boost Air Temp
Calculated Load
Coolant Temp
HPFP Actual Pressure
Injector Duty Cycles
Intake Temp
Intake Valve Adv.
Knock REtard
Long Term Fuel Trims
MAF Voltage
MAF Airflow (g/s)
RPM
Short Term Fuel Trims
Spark Advance
Throttle Position
Wastegate Duty Cycles