Is it true that when adding a boost controller to your car, that unless it's tuned, it will just mess up the car with the upped boost..?

What about regular mods of exhaust, intake, and headers, does these needs to be tuned too to not mess up the car? I know when you tune the car with these mods you get a better running system and added power.

 

i am no expert, but i have a mbc and no tune. have mine set to 22 psi. no problems so far. running for 5k now. A tune is in order if you wish to maximize all the power you can get with the added mods. Some mods you will need to get a tune i.e. bigger injectors, bigger turbo?? (correct me if i am wrong), etc. but an intake, exhaust, and headers won't mess up your car. only your warranty.

 

I'm mostly concerned about adding in either MBC or EBC to the car. I really don't want to just jump in and not get all the angles covered, especially with the Evo.

 

without any other mods the MBC or EBC will allow you to limit the amount of boost taper. Also you can set a peak boost rather than the computer. currently most people are seeing less boost taper which in turn will give you more power on the upper end. The second benifit may be if you add a mod that help with air flow it could drop your boost and then you can turn it back up for additional gains. just FYI you must have a boost gauge .

 

What do you mean by "boost taper?"

"The second benefit may be if you add a mod that help with air flow it could drop your boost and then you can turn it back up for additional gains." - So the boost controller will let you set the boost. to a different setting to adapt for the new air flow..? I don't if I understand that right but can you explain more? I'm planning to the AEM True Boost controller and gauge or Defi gauges with some other boost controller

 

Boost taper is when the boost drops from its peak through the RPM range. So, if you hit 24psi at 3k, but at 7k you only had 15psi boost, then you had a taper of 9psi.

To answer your second question; If you free up exhaust flow, you also remove back pressure, which means the turbo has to work harder to pressurize the system. Adding a larger intercooler, freeing up your exhaust flow, etc are all things that change this. You will find that after making these types of mods, you will need to increase the spring load on the boost controller to maintain the same boost levels previously.

Make sense?

 

Somewhat, can you explain more about the "spring load on the boost controller."

 

+1

00drifting00 you dont have to acutally mess with any springs. just turn the boost controller up. (spring inside) and it effects the wastegate so you make more boost.
very nice.

 

Usually adding a MBC will not result in any problems unless you are hitting fuel cut - it is best to keep your boost near factory levels until and unless you can tune or data log the car to verify the fueling and knock is within tolerance.

I would suggest waiting till the reflashes come out as they will be able to control the boost very well without a mbc

 

I was want to get a EBC to open up the car's boost when I first get the car. I was going to wait for the reflash as I initially planned but I was concerned about voiding the warranty and confuse as to which would be better. But with a reflash, I don't really need to tune the car because it's reevaluating the ECU with what ever I mod the car with, am I right..? Would a reflash be better off than a EMC or having both?