I was thinking the same thing. I bet it will just make a little less boost. I just think it is funny how i never noticed.

 

Pull yer head outta yer arsh

 

Yes it can. A good boost controller should be able to hold the gate closed,to a set psi, before opening the gate to regulate to your target boost. Lets say your target psi is 12. The gate can be set to hold closed untill 10psi, then start to open.

I know the AEM Tru Boost has this function. They call this function spring pressure IIRC. So, lets say your target psi is 12 again. You can modify your spring pressure setting to start opening the gate at 6,8,10, or whatever psi you want. Basically, you want to keep the gate closed as long as possible to help with spool up. But, if you hold it too long you will have a boost spike.

A manual boost controller can do this. Although, they are known for spiking.

 

Eboost controllers call this "gate pressure".

 

Anyone ever compared the spool time with controller.
How much does it help in decreasing spool time.

 

Depends how you have the gate hoses setup...bottom reference only, top only, or both and this also depends on your spring compared to your target boost.

Top only is obviously going to be overboost since the gate will basically never open.
Bottom only is going to the slowest since you have everything pushing to open it.

The closer the spring is to your target boost the faster spool will come in no matter what.

 

I have no experience yet, but from what i read all over the place the key is keeping the gate closed 100% until the target pressure is reached. From reading it said that gates start to open around 4-5psi. The AMS units just apply pressure to the top port to try and keep it closed. I have read that some guys use 2.5 pound CO2 bottles instead of boost pressure to keep the top port 100% closed until target boost is reached. that is just what i have read, not sure how accurate it is, but i might try out that CO2 stuff since a bottle is cheap and refills are cheap, and supposedly a 2.5 bottle lasts about 6months of DDing....







Anyways the truck drove no different this morning with that plug removed, i did not get into much boost since it was 32* out...

 

damn, more parts to buy for the truck

 

What you are really trying to control is the acceleration of the turbo, not just final speed. Keeping the gate closed longer will accelerate it faster so it reaches the required speed sooner, however if you keep it closed to long you will overshoot and get a boost spike. Thats what makes electronic controllers kind of tricky; its a dynamic system.

 

My buddy with a 8 sec TT stang uses a CO2 bottle to help hold the gates until desired pressure is reached. He loves how accurate and useful it is. only prob is having to open the bottle and mount it and keep it filled. For our daily turbo trucks im not sure if the ~1 second spool time lost is worth it. For a race application, 100% worth it.