NASSER400+

Hey all

My setuation is that when I hit the highway and I'm on 5th gear and I'm trying to go fast slowly I get vibration tell I take my feet off !! I'm wondering is that because of the blow of volve I got the HKS ssq blow of volve ??

AFD

iTrader: (1)

Does the issue go away after a few minutes of driving, or is this all the time?

I consistently get vibration in 4th & 5th (when doing 50MPH or higher) if it's cold outside.. but it goes away within the first 2 or 3 minutes of driving.

From what I understand, this is due to tire pressure fluctuations from temperature changes and/or flat spots on the tires from sitting.

If your issue happens all the time, then I have no idea what the cause is.. good luck, though

NASSER400+

the vibration from the boost build when i try to build boost and the boost gauge just bouncing up ... its nothing about the tires at all

AFD

iTrader: (1)

Ah, I see. Did you buy and install the separate recirculating kit for the BOV? Heard you could run into problems if you don't.. can't remember exactly what kind of issues, but 99% of the people here strongly recommend against vent-to-air on the X.

Also, maybe check for leaks?

ETA: ..or you could just go back to the stock recirc valve, if you suspect the HKS BOV might be the problem - and then see if your issue goes away.

ugakirk

iTrader: (14)

You aren't lowered are you?

rrkpitt15

iTrader: (1)

Sounds to me like its BOV flutter. If your boost gauge is bouncing around it has to either be BOV flutter or compressor surge. The HKS SSQV BOV is probably the worst BOV for our car.

01CBR929

iTrader: (8)

I would have to agree with him.

NASSER400+

yup thats what everybody around me have the same problem they went back to stock nov and the problem is gone !! but if i go back to the stock one ! there is nothing gonna happen ? like nothing with the turbo or the power or its just sounds different > ?

thanks guys

NASSER400+

ya by any chance could you guys tell me what is the best BOV for our cars ?

AFD

iTrader: (1)

Stock recirc valve.

..at least that's what the general consensus seems (unless you're actually to the point where it's not holding enough boost, and you legitimately have a need for an aftermarket BOV - in which case, I've seen Tial recommended many times).

Imo, since you've already bought the HKS BOV, you might as well just order the matching HKS recirculating kit and install it - otherwise, just go back to stock and crush if needed.

Just my 2¢, of course.. good luck

NASSER400+

I'll just go back to stock but btw even with the reserculate it's not doin a lot different !!!

AFD

iTrader: (1)

Ah, that sucks.. didn't know you already tried the recirculating kit.

Maybe the problem is something else entirely? Still might be a good idea to try going back to stock, just to rule that out I guess.

Did you try checking your pipes and hoses for any leaks at the connection points?

NASSER400+

http://www.youtube.com/watch?v=Eb-pE2QXac8

i went back to stock and installed the Gremmispeed Hybrid boost controller .. and look whats going on ?

thats on 5th gear on the highway !!!!!

UT_EvoX

Combination of compressor surge and VTA BOV flutter... just avoid those throttle spots or dial back your MIVEC to alleviate the issues. It should be less noticeable once it gets warmer, also.

edit: Ah, I saw your other post - I guess that's back to stock. That's purely compressor surge in the video.

AFD

iTrader: (1)

Mine did that stock (it was extremely quiet and really hard to hear) if I was in 4th or 5th at a really low RPM (under 3k) and tried to apply more throttle instead of just down shifting.