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Hi guys..long time listener..first time poster to this thread, please excuse my newby questions..
I just got my car back from the shop with a brand new ECS 1500 installed (Car is all stock LS6, except for ECS kit and Kooks 1 7/8 headers, X pipe, and BB PRTs). Car sounds and runs awesome!
But I cant believe how LOUD the TIAL Q BOV valve is! (I know its the loud one). It sounds like Im dragging a refrigerator box under the car. (kinda ruins my whole sleeper effect I was going for). And it seems to be open for anything above idle.
Is the general consensus to change it to the QR BOV and a lower spring rate?
I also saw a post suggesting a second BOV?
BTW they didn't finish the tune due to an issue with the restrictor plate needing an adjustment, but said it was making about 500 rwhp and 444 rwtq, does that sound ballpark? After the tune is completed next week Ill post the final numbers and some pics.
I hated the Tial BOV tshing everytime I shifted my 6 speed on my A&A kit so I made a T from some white plumbing fittings and recirculated it into the back of the air filter.
Now all I get is a small chirp on hard throttle from the blowoff hitting the impeller.
This is the setup if you want it as quiet as possible.
Last edited by StrangelovesM6Vert; 01-23-2015 at 06:30 AM.
I hated the Tial BOV tshing everytime I shifted my 6 speed on my A&A kit so I made a T from some white plumbing fittings and recirculated it into the back of the air filter.
Now all I get is a small chirp on hard throttle from the blowoff hitting the impeller.
This the setup if you want it as quiet as possible.
Great suggestion! Yes I would even be OK if it just made the noise when I lifted the throttle, but mine makes the tshing noise constantly unless under hard throttle, or low revs/high gear (i.e in 4th going 30), others have described the noise like a street sweeper. I know some like it..but it is loud. The ECS setup is a little different than the A&A, the BOV is at the very bottom of the intercooler, completely opposite side from the air filter...so it would take some additional plumbing to duplicate your idea..dooable though..I think.
A&A kit has the BOV in the fender well before the intercooler.
you can do it like this also
The grey fittings I got at a pool supply, the white ones Home Depot.
Though not rated for auto use, I've had no issues in 10,000 miles with the white fittings re heat etc. The main T is thick and won't go soft.
I pinned the hoses to the T I made since the flanges on both sides have no lips and were only a nominal 1/2" due to hood clearance
Last edited by StrangelovesM6Vert; 01-23-2015 at 04:10 AM.
I have the tial bov but it's not loud to me. Maybe it's because of my exhaust setup that I can't hear it, lol. I was trying to find a way to make it louder.
I have the tial bov but it's not loud to me. Maybe it's because of my exhaust setup that I can't hear it, lol. I was trying to find a way to make it louder.
I wanted to eliminate BOV noise completely like a factory SC setup would be which is why I redid it several times.
Finally settled on this to extend the run by adding this box and causing the speed to vary with 3 re stricter bushings along the way.
There's still a bit of tiny short chirping but unless I want to run hoses around the insides of the front end
this is as good as I can get it.
I made it easy to adjust the BOV as well to tune it.
As to louder
Make a cone and add it like a trumpet and have it exiting outside the bodywork underneath somewhere where it won't get wet or dirty if you want it louder
Last edited by StrangelovesM6Vert; 01-23-2015 at 10:47 AM.
Thanks guys! Awesome info and ideas! I think Im going to try the QR valve first, then add a second/ maybe reroute as needed. I think the Noise is so loud because its up in the hollow nose cone, but has the screened radiator intake, so the air is hitting and bouncing around inside, but because its open to the front you can hear it all. Its basically acting like an amplifier.
Before ECS starting offering the Tial bov they supplied a Bosch bov with their kits. It had a filter and was quite. I don't think it moves the same amount of air, but you could always install two of them and that would be stealth.
Before ECS starting offering the Tial bov they supplied a Bosch bov with their kits. It had a filter and was quite. I don't think it moves the same amount of air, but you could always install two of them and that would be stealth.
Bosch discontinued them. Some aftermarket companies make a copy of it, but I never used one myself.
I love my street sweeper scares the **** out of people when I pass them by with their windows down.
I hear you brother (please forgive the pun)! Just a little too loud for me..I prefer the sound of the motor, SC whine and Exhaust.
Im looking for more of a sleeper-then-boom! approach so I want to quiet it down while Im just running around. I cant believe how this thing screams when you apply right foot..now I have an even bigger traction issue.
The TIAL and the ECS are top notch quality products..ECS is swapping me out for the QR valve (quieter).. Doug and those guys are fantastic.
I just ordered my 2200sl kit from ECS last week and I'm woundering if i should switch to the QR. Do you have any before and after videos for comparison?
01-21-2015, 11:23 PM
ECS BOV Noise Reduction Suggestions?
(please) 
