On the Forge MBC, how does the boost calculate?
One click = ?
One full 360 degree turn = 1 psi?

I have the high spring, not the soft one.

Any info would help, thank you

 

forge websight

 

Don't think of it in those terms. Just test it yourself so that you know. It's not 100% the same always. With the stiff spring, turn it all the way down and test it. If it's at 15psi, then turn it up 4 clicks (half turn) and test it. If it went up to 20, then do smaller adjustment to get to 21 or wherever you want to go. You can figure out the rest.

 

I installed my Forge MBC not long ago, and started adjusting it using some tips from another thread. With the stiff spring at the lowest possible setting I was hitting 15PSI, then I gave it 6 clicks and my turbo was holding ~23PSI so I decided to give it 1 click on the other way (now a total of 5 clicks from the lowest possible setting). With this new setting my car holds close to 22PSI all the way to redline. Try now yours and use this info as reference only, every car reacts different to mods.

 

I have the soft spring only (bought used), and I'm peaking 18psi in 1st and 2nd gear. In third or fourth...i hit 20psi. So, i'm confused on how to adjust it....I can't find the thread related to this..., but i dont want to buy another mbc.

 

I recently installed my Forge MBC with the hard spring and have come up with the same results as JuancaROD has:

“then I gave it 6 clicks and my turbo was holding ~23PSI so I decided to give it 1 click on the other way (now a total of 5 clicks from the lowest possible setting). With this new setting my car holds close to 22PSI all the way to redline.”

My only input here is to make sure the newly inserted spring is properly set around the nipple, inside the MBC and the newly installed spring does not get smash on top of spring mount. Just make sure you pay attention how the soft spring comes out of the MBC and put the MBC together the same way it came apart. You will see what I’m talking about. If you happened to smash the hard spring, when reassembling the MBC, you would see boost levels above 30 PSI.

BTW this is the best MBC controller on the market.

 

[QUOTE=
BTW this is the best MBC controller on the market.[/QUOTE]

Thats why i dont want to get another one. I read though the soft spring only allows 7psi over the stock wastegate actuator. Am i screwed with the soft spring only, or should i turn it up? Again, I hit 20psi in 3rd or 4th, but definately only 18psi in 1st or 2nd. Does anyone actually use the soft spring with the Forge mbc? Can it even go higher than 18psi? I need to know for sure.

 

i just got my forge mbc...which spring is already installed in the mbc?

 

https://www.evolutionm.net/forums/sh...ight=forge+mbc Ok...i found the link i was looking for. I still dont understand why it is so consistant hitting 18psi in 1st and 2nd, and 20psi in all higher gears. Why does this happen??

 

try the stronger spring

 

Actually, i dont know which spring i have. I just know i have only one. I had it installed. Either way, is it normal at all for boost to be so precisely different in lower gears??

 

can someone please tell me!!! thanks

 

Soft spring.

 

thank you

 

I've read that with the soft spring, the Forge MBC set at its maximum level (all the way to the + side) will hold boost at 21 PSI. Steevo, go click by click until you find the best setting for all gears, I don't know why you're getting different numbers for different gears.