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BMW 3-Series (E90 E92) Forum
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Upgrade your Tial BOV vacuum line!
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08-13-2015, 04:30 PM | #23 |
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From my experience, if the 11psi spring is too strong, you probably have a vacuum leak somewhere in the system. I agree that the 10psi spring is a band aid and definitely agree that you should upgrade the hose barb on the intake manifold.
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08-13-2015, 09:03 PM | #24 |
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I run the 10lb spring in mine because the 11lb spring was causing too much flutter. BUT, that was with the smaller hose. Even though I now have a much improved line to the BOV, I still don't plan to go back to the 11lb spring because the 10lb one seems to be working very well.
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08-14-2015, 01:55 AM | #25 |
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I have been running one for long time, if I had Tial I would use -4AN line.
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JB4 G5, Stage 3 LPFP, Stage 2 MOTIV PI, VM 6466 ST, Custom OCC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2, DEFIV kit, KW clubsport, Delrin solid SF bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, M3 fenders, M3 OEM sideskirts, Mtech rear bumper, CSL trunk, MORR VS8.2 rims 245/295
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08-14-2015, 01:56 AM | #26 |
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me and you think alike, I did the exact same thing.
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JB4 G5, Stage 3 LPFP, Stage 2 MOTIV PI, VM 6466 ST, Custom OCC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2, DEFIV kit, KW clubsport, Delrin solid SF bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, M3 fenders, M3 OEM sideskirts, Mtech rear bumper, CSL trunk, MORR VS8.2 rims 245/295
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08-14-2015, 02:38 AM | #27 |
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a -10 spring would make the bov work a lot better and be much more responsive. the 11 psi spring is just too stiff for this car. The bov is supose to be slightly open at idle and the 10 psi spring is perfect.
I have a tial q on my turbo s2000 and the car pulls -22 of vacuum. I ran the 11psi spring and after i swap it out for the 10 psi spring the bov is finally open slightely at idle like it suppose to and the response of the box is much much faster and better. I even email tial about this and they said you can run any spring and the bov will still work and the lighter the spring the faster and better the response and yes coming from tial them self the bov is suppose to be open at idle. I have been turboing and moding cars for over 10 years and i have found it bese to run 1 size spring pressure lower than the tial chart for the car. I just bought my vrsf charge pipe with the tial bov and im sure then sent it with the 11psi spring. I cant wait to swap it out for the 10 psi spring. Last edited by Riceball777; 08-14-2015 at 02:43 AM.. |
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08-14-2015, 11:37 AM | #28 | ||
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Quote:
Quote:
My 10lb spring is not open at idle.
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09-04-2015, 07:51 AM | #29 |
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After reading this post and contacting Tial I decided to do something similar. I however also had my BOV line tapped for my boost gauge as well which Tial strongly recommended not to do. So in essence of needing an extra port on the manifold this was my solution.
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09-04-2015, 08:49 AM | #30 | |
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09-04-2015, 09:02 AM | #31 |
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The barb/fitting is an air hose adapter thats labeled 1/4" ID hose to 1/4" NPT. Drilled a 1/2" hole into the intake there and the threads tapped right into the intake manifold. That with some 2 part epoxy seemed to do the trick.
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09-06-2015, 10:10 AM | #32 |
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Then where do you put the vac line for your boost gauge?
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09-06-2015, 10:57 AM | #33 |
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I recently changed mine also. The flat spot just to the right of the stock nipple, I used a Q drill with a 1/4 NPT tap to put a 1/4 x 1/4 brass barbed nipple. Then just capped the stock nipple for later use (dyno boost line or boost gauge).
I was experiencing issues with spool flutter and surging at high boost (30psi). After upgrade, no issues. |
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09-06-2015, 12:57 PM | #35 | |
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Move it forward out of the way. |
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09-06-2015, 03:11 PM | #36 |
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How? With what? Did you use a bracket? Etc. All information that could help everyone you're suggesting this to...
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09-06-2015, 03:36 PM | #37 | |
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http://www.injenonline.com/mm5/merch...t_Code=X-20088 |
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09-06-2015, 04:19 PM | #38 | |
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09-06-2015, 04:51 PM | #39 |
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09-07-2015, 07:57 PM | #40 | |
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Boost gauge line goes in the stock location. Its the blue silicone line you can see in the pic. |
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09-07-2015, 08:09 PM | #41 | |
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I'm Not Sure I See How....
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What coolant reservoir are you using? The centerline of the relocated power steering reservoir is 5.5" forward of the front-most mounting hole for the 335d tank - a virtual mile in this engine bay. https://www.dropbox.com/s/jpzcbwx9p3...11443.jpg?dl=0 Last edited by terryd5150; 09-07-2015 at 08:22 PM.. |
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09-07-2015, 08:26 PM | #42 | |
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09-07-2015, 08:29 PM | #43 | |
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Could you post up a pic? |
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