Tial bov spring
#1
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Tial bov spring
My friend was having a weird issue with his tial q it came with a 10 psi spring in it and when he was on the stock maf the check engine light came on..
I told him to put in a 11 psi spring in it and the light went away then he put back the 10 psi spring and the light came back..
The question is if he puts a lighter spring back on s.d will the light come back on again and will it affect the tune???????
I told him to put in a 11 psi spring in it and the light went away then he put back the 10 psi spring and the light came back..
The question is if he puts a lighter spring back on s.d will the light come back on again and will it affect the tune???????
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Its not leaking it's rare for a tial to leak the springs stiffness has nothing to dues with the bov holding boost it just makes it react faster..So what should he do can tial please chime in!!!!!
#6
stock MAF you need to use a spring that keeps the bov closed at idle, or use the QR, on SD it won't matter as the air will be metered after the BOV.
if it goes away with the -11psi spring, use that - the -10 is probably hanging open at idle and decel and throwing a code
if it goes away with the -11psi spring, use that - the -10 is probably hanging open at idle and decel and throwing a code
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ok i have a question for you guys at tial i have the tial 50mm bov that is vented and when i get on it i hear a lot of fluttering and i think i have the black spring in mine not sure though. anyways what spring do you recommend?
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#9
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OP....Have you guys tried scanning the code? I will bet $$ its P0121, TPS code...If you search, myself and a lot of other people have had this problem with the Tial Q and stock maf...11 psi will make the check engine light not come back on but there is a good chance the bov may not even be opening...What is your buddy's vacuum at idle? Did he use the chart on Tial website to pick the spring or did he just order the 10 psi spring? I suggest making sure the bov is actually opening with the 11 psi spring...If not, make up some shims for the 10 psi spring...
I am definitely not an expert on the Tial bovs but over the last couple months I have been going through a lot of trial and error with them...I've swapped 3 different springs, changed vacuum line sizes, eliminated any Ts in the bov vacuum line, added shims to the 8 psi black spring....check out the last couple pages on the build thread...
https://www.evolutionm.net/forums/ev...ktech-etc.html
I am definitely not an expert on the Tial bovs but over the last couple months I have been going through a lot of trial and error with them...I've swapped 3 different springs, changed vacuum line sizes, eliminated any Ts in the bov vacuum line, added shims to the 8 psi black spring....check out the last couple pages on the build thread...
https://www.evolutionm.net/forums/ev...ktech-etc.html
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i know its not the turbo because when we turned up the boost from 19-20 to 23-24 it started doing it. also when the fluttering starts we can still feel the boost increasing but the bov flutters
#11
it's not the bov unless there is a leak in the line or you are running a line that is too restrictive (if this is the case, it would only happen for a split second)
#12
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OP....Have you guys tried scanning the code? I will bet $$ its P0121, TPS code...If you search, myself and a lot of other people have had this problem with the Tial Q and stock maf...11 psi will make the check engine light not come back on but there is a good chance the bov may not even be opening...What is your buddy's vacuum at idle? Did he use the chart on Tial website to pick the spring or did he just order the 10 psi spring? I suggest making sure the bov is actually opening with the 11 psi spring...If not, make up some shims for the 10 psi spring...
I am definitely not an expert on the Tial bovs but over the last couple months I have been going through a lot of trial and error with them...I've swapped 3 different springs, changed vacuum line sizes, eliminated any Ts in the bov vacuum line, added shims to the 8 psi black spring....check out the last couple pages on the build thread...
https://www.evolutionm.net/forums/ev...ktech-etc.html
I am definitely not an expert on the Tial bovs but over the last couple months I have been going through a lot of trial and error with them...I've swapped 3 different springs, changed vacuum line sizes, eliminated any Ts in the bov vacuum line, added shims to the 8 psi black spring....check out the last couple pages on the build thread...
https://www.evolutionm.net/forums/ev...ktech-etc.html
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