L lynnriderm6 Member Feb 2, 2009 #1 im getting one tonight and i have no clue about the yellow spring and the blue spring>>????
C coyfish Member Feb 2, 2009 #2 Very big thread about that. Do a search for forge bpv and you can't miss it. most people including me use blue + 2 shims. Takes no time to swap em out so when you get it just test them all.
Very big thread about that. Do a search for forge bpv and you can't miss it. most people including me use blue + 2 shims. Takes no time to swap em out so when you get it just test them all.
U USAFVMI08 Member : 2006 Mazdaspeed6 Feb 11, 2009 #3 +1 to coyfish's statement. Last edited by a moderator: Feb 12, 2009
V Vicspeed6_AZ Member : Mazdaspeed 6 Feb 12, 2009 #4 I actually use the yellow spring with no shims, I am running stage 1 cobb ap with an MSCAI no issues.
I actually use the yellow spring with no shims, I am running stage 1 cobb ap with an MSCAI no issues.
M Mistersix Member : MAZDASPEED6 Feb 23, 2009 #5 blue with 2 shims? whoa. i tried adding one and it fluttered like crazy! yellow no shims for me. just for the record.
blue with 2 shims? whoa. i tried adding one and it fluttered like crazy! yellow no shims for me. just for the record.
T tunersteve Member Contributor : 2011 Mustang GT Feb 24, 2009 #7 Mistersix said: blue with 2 shims? whoa. i tried adding one and it fluttered like crazy! yellow no shims for me. just for the record. Click to expand... I started there, but when I went with the blue spring, the car woke up big time. Make sure that you're not putting the shims on the top side, because it will flutter if you do that. Qwik6 said: I prefer blue with 1 shim. Click to expand... I hear you get slightly more vacuum at idle with only one shim. I'm running blue+2 and have thought about going back slightly with one less shim.
Mistersix said: blue with 2 shims? whoa. i tried adding one and it fluttered like crazy! yellow no shims for me. just for the record. Click to expand... I started there, but when I went with the blue spring, the car woke up big time. Make sure that you're not putting the shims on the top side, because it will flutter if you do that. Qwik6 said: I prefer blue with 1 shim. Click to expand... I hear you get slightly more vacuum at idle with only one shim. I'm running blue+2 and have thought about going back slightly with one less shim.
K Killer Member : 2011 3 5 door Feb 24, 2009 #8 Lynnryder, please do not make 2 threads about the same subject. Closed.
