Best bov for over 30psi?
Sick of people saying "Don't run VTA" when probably 99% have never had a VTA BOV on the car. They simply take what others say and pass it on as fact and have no experience on it whatsoever.
I went against what everybody said and got the Tial BOV and my idle has been completely spot on, just as good as the stock DV idle. I did not change anything in the tune. My friend had the HKS BOV on his 8, it idled perfectly. It makes me wonder if there was only one person that had idling issues and everybody took his word for it and spread it as gospel.
My advice: get the Tial. You have a 9 which has less idling issues than an 8 when it comes to BOVs (at least from what I've seen). The Tial is a tried and true product, it holds boost well under load and it vents it extremely well.
There's a reason so many race cars run this BOV.
I went against what everybody said and got the Tial BOV and my idle has been completely spot on, just as good as the stock DV idle. I did not change anything in the tune. My friend had the HKS BOV on his 8, it idled perfectly. It makes me wonder if there was only one person that had idling issues and everybody took his word for it and spread it as gospel.
My advice: get the Tial. You have a 9 which has less idling issues than an 8 when it comes to BOVs (at least from what I've seen). The Tial is a tried and true product, it holds boost well under load and it vents it extremely well.
There's a reason so many race cars run this BOV.
CEL comes on regardless because the MAF isn't picking up recirculated air. At least mine came on because of that.
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Switch to speed density = problem solved on the cel.
Babs - you may not be noticing any issues, but it's definitely running rich between shifts if your still on the maf. Race cars run the Tial because it's tried and true, holds boost great, won't break etc etc. In my experience it ONLY ran good at WOT though. Any time I was getting on the freeway, any high-boost, low-rpm situations the BOV sucked donkey tip and completely changed the drivability of the car. I went back to the crushed stocker and later the Synapse which has gave me the drivability back while still holding 30+ psi.
Babs - you may not be noticing any issues, but it's definitely running rich between shifts if your still on the maf. Race cars run the Tial because it's tried and true, holds boost great, won't break etc etc. In my experience it ONLY ran good at WOT though. Any time I was getting on the freeway, any high-boost, low-rpm situations the BOV sucked donkey tip and completely changed the drivability of the car. I went back to the crushed stocker and later the Synapse which has gave me the drivability back while still holding 30+ psi.
Ted B, you might not have to put a different spring in it, but what do you think about all of the different hose configuration options with the Synapse? I have also heard some people have issues with the Synapse and it being so quick to respond to changes in pressure that when running ECU boost it has BOV flutter issues. Have you heard of similar issues, or no?
A word of wisdom - The BOV manifold signal needs to be a dedicated line with nothing else tapped into it for best results. Tap a BOV into a boost controller signal line, and one will wonder why the BOV doesn't work properly - assuming of course he even realizes it.
Switch to speed density = problem solved on the cel.
Babs - you may not be noticing any issues, but it's definitely running rich between shifts if your still on the maf. Race cars run the Tial because it's tried and true, holds boost great, won't break etc etc. In my experience it ONLY ran good at WOT though. Any time I was getting on the freeway, any high-boost, low-rpm situations the BOV sucked donkey tip and completely changed the drivability of the car. I went back to the crushed stocker and later the Synapse which has gave me the drivability back while still holding 30+ psi.
Babs - you may not be noticing any issues, but it's definitely running rich between shifts if your still on the maf. Race cars run the Tial because it's tried and true, holds boost great, won't break etc etc. In my experience it ONLY ran good at WOT though. Any time I was getting on the freeway, any high-boost, low-rpm situations the BOV sucked donkey tip and completely changed the drivability of the car. I went back to the crushed stocker and later the Synapse which has gave me the drivability back while still holding 30+ psi.
And as far as drivability, yes it may flutter some on part throttle but I do not think it affected drivability at all. I use it especially as a source of humor whenever I have passengers in the car
Granted, the only reason I went VTA was because I had the Tial sitting around from my previous car and I probably would still be recirculated if I didn't but now that I have the Tial, there's no way that I'll go back.
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Switch to speed density = problem solved on the cel.
Problem finally solved I swapped out the 10 psi spring for the 11 psi and found and eliminated the metal vac steam on the valve cover and aso found out the vac line the wrong size and swapped it out to 1/4 id and now barley flutters just reacts fast..p.s thanks for the help I think I don't get the flutter like you were having cause i have the anitsurge drilled cover..
Babs - you may not be noticing any issues, but it's definitely running rich between shifts if your still on the maf. Race cars run the Tial because it's tried and true, holds boost great, won't break etc etc. In my experience it ONLY ran good at WOT though. Any time I was getting on the freeway, any high-boost, low-rpm situations the BOV sucked donkey tip and completely changed the drivability of the car. I went back to the crushed stocker and later the Synapse which has gave me the drivability back while still holding 30+ psi.
Problem finally solved I swapped out the 10 psi spring for the 11 psi and found and eliminated the metal vac steam on the valve cover and aso found out the vac line the wrong size and swapped it out to 1/4 id and now barley flutters just reacts fast..p.s thanks for the help I think I don't get the flutter like you were having cause i have the anitsurge drilled cover..
Babs - you may not be noticing any issues, but it's definitely running rich between shifts if your still on the maf. Race cars run the Tial because it's tried and true, holds boost great, won't break etc etc. In my experience it ONLY ran good at WOT though. Any time I was getting on the freeway, any high-boost, low-rpm situations the BOV sucked donkey tip and completely changed the drivability of the car. I went back to the crushed stocker and later the Synapse which has gave me the drivability back while still holding 30+ psi.
Last edited by 4doorstreetbike; Aug 17, 2010 at 09:22 PM.
I thank all of you for your opinions on my question but I think I have found the best option is crushing the stock bov for now. I crushed mine tonight and it has completely solved my problem.no flutter yet and I've tried really hard to make it happen and it won't.
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That`s what happened to me today. Check Engine LOL.On the stiffest setting. My BOV is crap and leaks big time while accelerating. I`ll try TIAL Any suggestions ?
