Just wanted to spread the word around. CP-E is in the process of developing a SB specifically for the n/a 3. I'm going to try and summarize all the information on whats been going on. Since my vehicle is one of the cars they are testing this standback on and some of the results are from my car i'm going to post what has been done so far in this thread.
Per Dimaorlov from CPE,
The CP-E standback2 piggyback computer has been available for the turbo Mazdaspeed models for some time.
I am now trying to get it to run on the regular 3.
This piggyback will serve as a fuel controller and a tool for timing control.. There is of course real time tuning, graphs, data logging and etc.
This would be of great benefit to the 3 owners with both NA engines and aftermarket turbos
I've just started working on it and need lots of testing, refinement and adaptation to work with the non turbo Mazda3 - a few weeks for sure before anythings shows- but I will do my best to keep things updated.
This is just a heads up on the project.. and I would like to see if there is any interest in this type of setup and for what applications.
For turbo applications
AFR, Timing, standalone boost control, option for bigger MAP sensor, ProFuel controller(meth, injectors), BlackBox option..
The boost controller: What would be needed is a AEM 3.5BAR MAP sensor (for which the SB has provisions for), and a wastegate solenoid thats closed by default (again for which the SB was designed for - solenoids are made by a good amount of manufacturers) Note: 3.5BAR might be abit overkill for after market turbo application of like 8-10psi (3.5BAR - about 30psi). Perhaps a 2.5BAR might be better in which case we would need to change the firmware on the SB to interpret it correctly.
With those two things - the Sb would be able to very effectively control boost. Our boost control method relies on a very sophisticated PID (Proportional-Integral-Derivative) feedback control loop, which will adjust the wastegate automatically until the desired boost pressure is achieved. In other words, you can type your desired boost pressure into the software, and the controller will hold that boost pressure from your boost threshold to redline. Furthermore the SB has the capability to to VTA. You can tune your maps so that the injectors shut off between shifts, which nearly eliminates all the popping and backfiring associated with venting your blow off valve to the atmosphere.
Both the air/fuel and timing tables are based on huge 30x30 tables for enhanced tuning resolution. Fueling changes can be accomplished by scaling the MAF sensor output voltage (for the NA).
The engine controller allows on-the-fly adjustments of boost pressure, ignition timing, and fuel delivery all in real time. The SB can also datalog just about every engine sensor for up to 40 minutes (depending on the selected sample rate of either 5, 10, or 20Hz).
I went to CPE to get the SB installed as well as get my car dyno tuned on their mustang dyno. The results...
3.29.2009
Per Dimaorlov from CP-E
The dashed line is what AK came in with on his car minus the standback.
The solid line is with a good tune down low to midrange, and conservative up top - we were getting tired and didnt want to push the car as we have been working with it half of the day and putting lots of stress on it and the dyno. I will tune it further as AK drives around on it for a while to see about stability.
We gained alot of Torque down low and gained a good amount of Horsepower through the powerband.
I havent driven the car afterwards, so Ill let AK do the talking about how it feels.
The tune I recieved added and pulled fuel until 5700 as well as added timing. As a result, we gained alot of Torque down low and gained a good amount of Horsepower throughout the powerband.
Since then my car has been running smooth with the tune and everything else looks good. I'll keep ya'll posted on any new developments and when the SB will be released.
Also any questions ya'll might have, I'll try to answer and if I can't answer I will get an answer for you.
Per Dimaorlov from CPE,
The CP-E standback2 piggyback computer has been available for the turbo Mazdaspeed models for some time.
I am now trying to get it to run on the regular 3.
This piggyback will serve as a fuel controller and a tool for timing control.. There is of course real time tuning, graphs, data logging and etc.
This would be of great benefit to the 3 owners with both NA engines and aftermarket turbos
I've just started working on it and need lots of testing, refinement and adaptation to work with the non turbo Mazda3 - a few weeks for sure before anythings shows- but I will do my best to keep things updated.
This is just a heads up on the project.. and I would like to see if there is any interest in this type of setup and for what applications.
For turbo applications
AFR, Timing, standalone boost control, option for bigger MAP sensor, ProFuel controller(meth, injectors), BlackBox option..
The boost controller: What would be needed is a AEM 3.5BAR MAP sensor (for which the SB has provisions for), and a wastegate solenoid thats closed by default (again for which the SB was designed for - solenoids are made by a good amount of manufacturers) Note: 3.5BAR might be abit overkill for after market turbo application of like 8-10psi (3.5BAR - about 30psi). Perhaps a 2.5BAR might be better in which case we would need to change the firmware on the SB to interpret it correctly.
With those two things - the Sb would be able to very effectively control boost. Our boost control method relies on a very sophisticated PID (Proportional-Integral-Derivative) feedback control loop, which will adjust the wastegate automatically until the desired boost pressure is achieved. In other words, you can type your desired boost pressure into the software, and the controller will hold that boost pressure from your boost threshold to redline. Furthermore the SB has the capability to to VTA. You can tune your maps so that the injectors shut off between shifts, which nearly eliminates all the popping and backfiring associated with venting your blow off valve to the atmosphere.
Both the air/fuel and timing tables are based on huge 30x30 tables for enhanced tuning resolution. Fueling changes can be accomplished by scaling the MAF sensor output voltage (for the NA).
The engine controller allows on-the-fly adjustments of boost pressure, ignition timing, and fuel delivery all in real time. The SB can also datalog just about every engine sensor for up to 40 minutes (depending on the selected sample rate of either 5, 10, or 20Hz).
I went to CPE to get the SB installed as well as get my car dyno tuned on their mustang dyno. The results...
3.29.2009
Per Dimaorlov from CP-E
The dashed line is what AK came in with on his car minus the standback.
The solid line is with a good tune down low to midrange, and conservative up top - we were getting tired and didnt want to push the car as we have been working with it half of the day and putting lots of stress on it and the dyno. I will tune it further as AK drives around on it for a while to see about stability.
We gained alot of Torque down low and gained a good amount of Horsepower through the powerband.
I havent driven the car afterwards, so Ill let AK do the talking about how it feels.
The tune I recieved added and pulled fuel until 5700 as well as added timing. As a result, we gained alot of Torque down low and gained a good amount of Horsepower throughout the powerband.
Since then my car has been running smooth with the tune and everything else looks good. I'll keep ya'll posted on any new developments and when the SB will be released.
Also any questions ya'll might have, I'll try to answer and if I can't answer I will get an answer for you.
Last edited:
