Forge BPV Group Buy #2!!!

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Mar 14, 2011 | 10:52 PM

#476

ssblackstealth

corn gas ftw....

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From: tyler, TX

its green spring for me with my 23psi tune, have been seeing 25psi spikes now as well....

Mar 14, 2011 | 10:58 PM

#477

SilverSS_TNR

Senior Member

Joined: 11-28-08

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From: Chicago

Quote:

Originally Posted by BPacak

not that it matters. but was pretty much all the paint scratched off the springs or was it just me?

yes they were, just enough paint to distinguish between green and yellow

Mar 15, 2011 | 12:00 AM

#478

08inBama

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Joined: 08-02-08

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From: Alabama

yeah I went green and picked up boost as well, holds boost just fine... see no reason for the yellow

Mar 15, 2011 | 02:55 PM

#479

sponge14

Senior Member

Joined: 03-14-09

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From: Anna, TX

Quote:

Originally Posted by Dart_SI

does anybody prefer the yellow spring or is everyone just saying green spring ftw?

Green Spring with Trifecta 21psi flash seems to hold boost just fine so it's green for me...

Mar 15, 2011 | 08:57 PM

#480

ttypecamaro

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Joined: 02-21-10

Posts: 33

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From: Baltimore, MD

Quote:

Originally Posted by ttypecamaro

Installed it today. I HP tuned my car to 22psi, so I installed the yellow spring. However, I suspect it is leaking boost because I can hear a very loud and shrill whistle when in boost above 18 psi that didn't exist before. I need to try adding a washer to see if it makes a difference. I have a modified airbox snorkel, K&N drop-in filter, and all else is stock. It does seem a little louder when releasing part-throttle, mid-rpm, medium boost... Otherwise it sounds stock, which is fine by me.

switched to the green spring... the loud whistle went away and the 24psi boost spike came back. Success.

Last edited by ttypecamaro; Mar 16, 2011 at 08:18 PM. Reason: spi = psi

Mar 16, 2011 | 12:17 AM

#481

gdubs

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From: Rochester, NY

Canadain guys. Your valves went out today

Mar 16, 2011 | 01:42 AM

#482

kplaya186

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From: Central shit hole, Cali

Installed mine today! Thanks for getting this done gdubs! Everybody remember to put your o-ring gasket on the BPV! I forgot mine today and re-installed everything and had to take EVERYTHING back out!

Mar 16, 2011 | 12:29 PM

#483

sponge14

Senior Member

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From: Anna, TX

Quote:

Originally Posted by kplaya186

Installed mine today! Thanks for getting this done gdubs! Everybody remember to put your o-ring gasket on the BPV! I forgot mine today and re-installed everything and had to take EVERYTHING back out!

I don't remember having a separate O ring... Did I mess something up???

Mar 16, 2011 | 12:32 PM

#484

Grishbok

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Joined: 09-23-10

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From: VA

Quote:

Originally Posted by sponge14

I don't remember having a separate O ring... Did I mess something up???

no, the o-rings are preinstalled. I was wondering if his got knocked loose during shipping or something.

Mar 16, 2011 | 12:35 PM

#485

ssblackstealth

corn gas ftw....

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From: tyler, TX

yea mine was already on.....lol

Mar 16, 2011 | 12:48 PM

#486

kplaya186

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From: Central shit hole, Cali

Yea mine was in the box. Must have come loose!

Mar 16, 2011 | 02:42 PM

#487

northvibe

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From: Minnesota

Quote:

Originally Posted by ttypecamaro

switched to the green spring... the loud whistle went away and the 24spi boost spike came back. Success.

Ya seems the green is pretty much what everyone should run.

Mar 16, 2011 | 03:02 PM

#488

G Speed

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Joined: 07-18-08

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From: Maple Syrup Land

Quote:

Originally Posted by gdubs

Canadain guys. Your valves went out today

dow e have tracking numbers?

Mar 16, 2011 | 11:16 PM

#489

DillySS

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Joined: 03-20-09

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From: Naperville

I put it in today. AWESOME!!! The sound is great and cant believe that we had that peice of junk in there before.

Mar 17, 2011 | 02:53 PM

#490

ronn

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From: Los Angeles

Quote:

Originally Posted by ssblackstealth

its green spring for me with my 23psi tune, have been seeing 25psi spikes now as well....

...and you think this is a good thing?

Mar 17, 2011 | 03:13 PM

#491

northvibe

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From: Minnesota

Quote:

Originally Posted by ssblackstealth

its green spring for me with my 23psi tune, have been seeing 25psi spikes now as well....

with your tune going that high on boost have you tried the yellow spring or adding in a washer or 2 to the green spring and seeing if the spikes go away?

Mar 17, 2011 | 03:35 PM

#492

drewbroo

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From: TUCSON AZ

Quote:

Originally Posted by ronn

...and you think this is a good thing?

All tunes are going to spike higher than where they settle. Some even spike to 24 and settle on 18 at the end of the powerband.... its the turbo running out of breath. People are spiking higher and settling higher with this BPV because their wastegate tables were maxed on a leaky BPV. Now since they have a working BPV, its bolting the demanded air loads. A retune will be sufficient, but yes spiking and settling is normal through the midrange. And yea spiking at 25 and settling at 22 is a good thing.

Mar 17, 2011 | 06:08 PM

#493

ronn

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From: Los Angeles

Quote:

Originally Posted by drewbroo

And yea spiking at 25 and settling at 22 is a good thing.

....uhhhh...yah know boost = BACK Pressure=HIGHER TEMPS... high boost not always a *good thing*. FLOW is a good thing. Spike to 25 is NOT a good thing.

Mar 17, 2011 | 06:25 PM

#494

drewbroo

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From: TUCSON AZ

Quote:

Originally Posted by ronn

....uhhhh...yah know boost = BACK Pressure=HIGHER TEMPS... high boost not always a *good thing*. FLOW is a good thing. Spike to 25 is NOT a good thing.

if it was holding 25 PSI, that is 1 PSI about its efficiency range. (that would be a bad thing) Heat does not come from back pressure.... Heat comes from the turbo doing work. If you have no cats back pressure isn't much of an issue. My coupe spikes to 26PSI and holds over 20. I also have IAT's 2 degrees above ambient at a 120MPH. So a lil PSI spike doesn't seem to bother my motor.

Mar 18, 2011 | 03:17 AM

#495

kasper_17

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From: Calgary

dam... missed out.. hopefully another one comes up! and Ill be in!

Mar 18, 2011 | 04:38 AM

#496

BPacak

Vtec Rep

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From: Parma, OH

if you wanna get one they are only 135 on modernperfomance

Mar 18, 2011 | 06:52 AM

#497

snoftall

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From: Newfoundland

For some reason the picture that Modern Performance has posted doesn't look the same as what I've seen others post?

Picture from Modern Performance's Website: