Our Community is 705,000 Strong. Join Us.


Intake Flutter


maverick_990
03-08-2009, 10:27 PM
I have looked all over and I could not find an answer, so if someone finds one forgive me, but I put on an intake on my 99 GST and when I shift gears I here a flutter coming out of the filter, I am to understand this is Compressor Surge, but how do I correct it??

My BOV isnt recirculated, could that be the problem??

Or if I take my intake back off and put the stock box, will that help?????

Or is it STRICTLY just the blow off valve?????

steviek
03-08-2009, 10:41 PM
do you have the proper mods for having a VTA blow off valve. what bov are you using did you set the spring stiffness yourself? It could be compressor surge. I would def recirc that thing.

maverick_990
03-08-2009, 10:44 PM
I bought the car about 2 weeks ago and I believe it is just a knockoff type rs and I dont know how it is set

david-b
03-08-2009, 11:55 PM
I bought the car about 2 weeks ago and I believe it is just a knockoff type rs and I dont know how it is set

There's a little nut on top of the BOV. It may say Hard/Soft. That's what you want to adjust. I believe you would want to go soft because the BOV is set too hard and not venting quick enough (correct me if wrong).

You probably had compressor surge the whole time, but the hard pipes for the intake just make it more obvious.

steviek
03-09-2009, 12:05 AM
yea you're gonna need softer (if the bov is even functioning properly)

maverick_990
03-09-2009, 11:51 AM
I went softer and it still does it, I think I am going to have to get a new BOV....
What would be a good one that doesnt cost too much?? I would put the stock one on for now but I dont have it

david-b
03-09-2009, 01:00 PM
I went softer and it still does it, I think I am going to have to get a new BOV....
What would be a good one that doesnt cost too much?? I would put the stock one on for now but I dont have it

Get a 1G BOV. Can find them on eBay for like $30. Can get some high end ones, like Tials and Greddys, but expect on paying over $200 for them.

maverick_990
03-09-2009, 02:04 PM
ok thanks, why a 1g instead of 2g?

steviek
03-09-2009, 02:32 PM
1g's were metal and the 2g's were cheap plastic the 2g's leak at a much lower boost presure then the 1g's ever would.

maverick_990
03-09-2009, 02:33 PM
oh ok

LandoAWD
03-09-2009, 02:39 PM
Is there anything tee'd into the BOV reference line?

maverick_990
03-09-2009, 02:50 PM
No the hose going from the BOV is not tee'ed..
This is an older pic, I have an intake on it now...
and the guy I bought it from put a FAKE greddy type rs

http://i88.photobucket.com/albums/k183/maverick_990/DSCN0949_084.jpg

steviek
03-09-2009, 10:27 PM
If you want I can have a look in my garage for the stock 2g bov I have lying around Ill send it to you if you want to pay for shipping.

maverick_990
03-10-2009, 03:57 AM
will the 2g be better than this knockoff?

ned032002
03-10-2009, 06:43 AM
I have a crushed 1G bov that I will sell for $20 shipped if you want it?

david-b
03-10-2009, 08:42 AM
I have a crushed 1G bov that I will sell for $20 shipped if you want it?

Buy it. Great price.

(Not trying to turn Stevie down, but the 1G will be better)

maverick_990
03-10-2009, 12:46 PM
Is it being "crushed" better?? I would like to buy it

LandoAWD
03-10-2009, 12:51 PM
Is it being "crushed" better?? I would like to buy it
You have much research to do, sir!

I suggest (like the READ ME FIRST post) registering on www.dsmtuners.com and getting comfy with the SEARCH feature.

maverick_990
03-10-2009, 12:54 PM
I do search before I start a "new" thread but since this was posted I thought I would ask and then state that I would buy it...

LandoAWD
03-10-2009, 12:55 PM
I do search before I start a "new" thread but since this was posted I thought I would ask and then state that I would buy it...You're missing the point. How do you know if you actually want to buy it if you don't know if it is better or not (it is, but possibly overkill)? Follow?

:)

maverick_990
03-10-2009, 12:58 PM
I did look it up but It was after I posted the question and I didnt edit the post sorry..

david-b
03-10-2009, 01:38 PM
Search first, post later, edit lastly

http://www.automotiveforums.com/vbulletin/showthread.php?t=763497&highlight=crushed+bov

steviek
03-10-2009, 01:46 PM
yea def buy neds shipping alone for mine will be like 20 cause its canada neds deal is unbeatable

maverick_990
03-10-2009, 02:06 PM
ok I am going to thanks for the help.. this should fix my flutter problem too right?? when I get it should I go softer since everything is stock?

LandoAWD
03-10-2009, 02:49 PM
ok I am going to thanks for the help.. this should fix my flutter problem too right?? when I get it should I go softer since everything is stock?
You still haven't searched about crushing. A crushed valve is more prone to fluttering at transient and low-boost levels than a non-crushed valve would be. You cannot "go softer" on a non-adjusting valve.

david-b
03-10-2009, 02:50 PM
ok I am going to thanks for the help.. this should fix my flutter problem too right?? when I get it should I go softer since everything is stock?

When you buy it and get it, install it with a NEW gasket and recirculate it back to the intake. Stock BOVs are non-adjustable, so just hook the hose up and you're ready to go.

I have a 1G BOV on my 420a-t motor and I get some "flutter", but only when I go WOT at like 1500-2500rpm and let go go of it quickly. It's not doing any harm, since it is technically venting a little so I wouldn't even call it compressor surge. You'll be good with it though.

ned032002
03-10-2009, 08:27 PM
I can ship it out the day after I receive payment so just let me know for sure.

ned032002
03-12-2009, 09:10 PM
Do you want that BOV?

maverick_990
03-17-2009, 02:07 AM
Ned I hope you got my PM...
I found a steal on a Greddy Type RS.....$60 the guy bought it for his car and wrecked it the same day he installed it... I checked with the greddy site and it is real not a fake, so I installed it and the flutter isnt as bad but I still have to adjust it a little more.. Now all I need is to get the piece ordered to recirc and that will be done with..

maverick_990
03-17-2009, 02:29 PM
Here is my new BOV....Now I just have to recirc... and I need a 2gb bumper!!
http://i88.photobucket.com/albums/k183/maverick_990/DSCN1013_002.jpg

steviek
03-17-2009, 03:00 PM
yea they sell them pretty cheap like 14bucks iirc extreme has em. I hope you still have youre dump tube

steviek
03-17-2009, 03:05 PM
ps nice bov

maverick_990
03-18-2009, 04:01 AM
thanks, no the tube was missing when I got the car so I will have to go to schucks and get a hose fitted...

Add your comment to this topic!