Good Setup in Forge BPV

[lavoiespeed3]

What is the good setup in the BPV for the shims and color springs.

I have. TMIC, cat-back, hi-flow catalytic, Cobb Sri, Cobb Stage1 sri+91.
Thanks you.

ps: I know it's Try and error. But what is a good start?

I have 2 shims and 4 color springs with the kit, red, green, yellow and blue

 

[08cosmic3]

It will depend on how aggressive you want your car to be. A light spring will be more Daily driver friendly, were a heavier spring plus shims will hold boost between shifts and be more aggressive but you will experience times when the car will hold too much boost between shifts and you will get a lot of jurkyness. The car will be smoother with the yellow spring and a shim or two but will not perform as well. I used to run the blue with two before I got the AP but I went back to Blue with one recently. All the extra boost with the AP made it too jerky for daily driving. I have never tried the red spring but have read that people with the AP run it and some will swap in the red spring when they go to the drag strip. When I got the Forge there was no green spring so I can't comment on it.

Yellow = lightest
Blue = medium
Red = Stiffest
Green = ????

Start with the blue with two shims. If it's too jerky for you then remove one shim. If you want smooth go blue with no shims.

 

[lavoiespeed3]

Thanks you for the answer, what is too jerky? I don't understand this word

 

[08cosmic3]

The BPV will hold boost between shifts and if you are not careful when letting off the clutch and getting back on the throttle the car will buck and the gear change will not be smooth (jerky)

 

[ReNaToMS3]

What is the good setup in the BPV for the shims and color springs.

I have. TMIC, cat-back, hi-flow catalytic, Cobb Sri, Cobb Stage1 sri+91.
Thanks you.

ps: I know it's Try and error. But what is a good start?

I have 2 shims and 4 color springs with the kit, red, green, yellow and blue

I think with those mods you should go with Blue + 2 shims

 

[lavoiespeed3]

Ok I need smooth Daily drive I don't boost anytime, maybe 5-6 psi when i'm going to my job. I Will use Blue and no shim? I don't want the extra power for stiff spring but when i'm going to the race I will change the setup it's good like this?

 

[LovinMyMS3]

I'd run the strongest spring/shim combo you can without excessive popping or surge. I've got bolt on's and am running blue with a factory shim and a custom shim that is a little bigger than standard. Blue with two was to little, red was to much.

 

[JamesCH]

I'm using blue+2, I haven't really fiddled around with it much, but I like it, holds plenty off boost and isn't very jerky (but it's not super smooth either).

Edit: With my mods it holds about 16.4 PSI of boost, about 1PSI above stock I believe.

 

[Darth Vader]

I love red. My full in and out mods (less IC) + red makes the torquey as hell all around and works perfectly up high, too.

 

[coyfish]

I use blue +2 shims