Hi,

My car is undergoing some serious upgrading and I want to get an electronic boost controller to make the dyno sessions easier. I currently am using 2 MBCs.
I really like the look, spec and adjustability of the AVC-R but don't have anywhere to mount it. Instead I have considered the PFCs add on boost controller kit.

Does anyone know the differences setting wise between the 2, and if I can dial out spike effectively with the PFC add on?


I will be running sequentials with highish boost.

Thanks

 

The boost controller kit is the exact same solenoid used with the AVC-R....

Any boost controller can eliminate spiking....including manual ones.

 

Yup, the MBCs I was using were doing a great job.

Solenoids are the same, but are the options which are set through the commander the same too? Some feedback from people using the PFC/PFC boost controller setup would be appreciated.

 

i thought the PFC controlled boost on our cars using the stock system? is the add-on boost control kit necessary?

 

No, it is not necessary, the PFC can use the stock solenoids to control the boost. However, using a nice quality NEW solenoid rather than 10+ year old OEM solenoids often has better results.

 

or you can just update the stock solenoids and have the best of both worlds.. for someone that is looking to keep it more OEM of course

 

Here are 3 datalogs graphed from the same car before and after going single.
The first one is the sequential twins running 15 psi on the secondary; the PFC is controlling boost.
The second graph is a single turbo using the PFC with the Apexi Boost Control Kit solenoid.
The last graph is a single turbo using a Profec B Spec II to control boost.

 

Power FC boost control with the stock solenoids seems to work pretty well. I think its just a little conservative...creeping up on the boost a little more than an agressive EBC in order to avoid spikes. That being said I don't think its a real problem and I don't plan on using anything else to control boost.

The only thing that I have to caution about is that the commander can only get wastegate "closed time" down to 20%. If you have a catless free flowing exhaust this may net you too much boost. For me on a cold night I've creeped to 11.1 psi at 20% when I was shooting for mid-high 10's. The FC Datalogit is able to drop the "closed time" all the way down to 0% to get you true wastegate/minimum boost but it costs extra. I'm running 16% with the datalogit which is getting me 10.4 psi in cool (77F) weather when both turbos are on line.

 

VERY interesting......the Profec spools 150-200 rpm slower than the Apexi (as setup, anyway), but is MUCH more stable. Gee, I guess the cheapy Profec doesn't do such a bad job, huh?

 

I'm controlling boost with the PFC via *NEW* stock solenoids with no problem

 

Thanks for your input guys. Looks like it's a waste of money then! I will have a little more money for other things.

The PFC on its own does a very good job at 15psi with sequentials. Just what I was looking for.