New Boost Controller

[bugz]

Hi,

I recently purchased my second R33 GTS-t. The previous owner had done some nice work and it came with an Apexi boost control kit (with PFC). When i put it on the dyno we discovered that the vacuum lines had been cut and plugged, no doubt because the BC had shit itself and the alleged tuner took the easy way and just relied on the spring from the ext wastegate (progate 48mm). I have ordered a new BC (Blitz spec R).

My question is how much difference will it make to the car's performance eg. coming on boost etc when compared to the current setup?

[bored33]

should be no different if you buy a decent BC and tune it the same way the previous owner had it. most boost controllers only hold boost, alter the maximum boost you want, and the duty cycle (which is what you want to control when your boost comes on).

point is, if you buy a good boost controller then you should have the same performance when set up right.

[bugz]

Thanks for the feedback mate. So, basically when the BC is holding the boost at the desired level does it also get to that boost level more efficiently than if you had no bc at all?

[bored33]

ofcourse, because a boost controller will let you achieve your desired boost level when ever you want and will hold it at that level throughout your rev range. if you did not have a boost controller (i will use stock ecu and stock solenoid) then your boost graph (once you get a dyno) will be wavy say - it goes up to 10psi, then slowly dips off to say 8psi and goes back up n down. with a boost controller you should get a much flatter line so it will read 10psi and maybe up and down a little by say 0.3psi.

stock ecu builds up your boost slower to achieve a more fuel efficient drive i.e normal driving between 2k rpm and 4k rpm and will have a low boost setting say 7psi for that little bit of extra kick say when you accelerating out of a corner or up a hill. when you flat foot your car, the stock ecu knows you want more power at higher revs and boosts your car up to 10psi (i believe by grounding your solenoid to open up the actuator i could be wrong i do not quite remember).

hope that helps. at the end of the day - get a boost controller.