Thread: How important is boost source?

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2012-04-15 00:04:32

#21

Dudeman258 Online/offline status of Dudeman258 is unknown

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Originally Posted by zacward

Shorter vacuum line= less lag.

Originally Posted by BenFenner

That doesn't make any sense at all zac.

haha.

Apparently the speed of sound is not fast enough.

Walker

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2012-04-15 00:39:48

#22

blairellis Online/offline status of blairellis is unknown

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Originally Posted by Vadim

Ok did some testing today. First tested with the WG hooked up to the compressor housing, then tested with to WG hooked up before the throttle body.

Boost building was tested in 4th gear. WHP was tested in 2nd gear using Virtual Dyno.

WasteGate on Compressor Housing
Starts building boost: 1900 rpm
Full boost (7psi): 3600 rpm
WHP: 223

WasteGate Before ThrottleBody
Starts building boost: 1900 rpm
Full Boost (8psi): 3300 rpm
WHP: 228

Wastegate Before ThrottleBody, with MBC
Starts building boost: 1900 rpm
Full Boost (11 psi): 3600 rpm.
WHP: 257

And the proof is in the pudding!

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2012-04-15 03:44:21

#23

Vadim

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Updated this post with pictures and virtual dyno graph. Peak torque stayed longer thus made better mid range power too.

Originally Posted by Vadim

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2012-04-15 06:17:59

#24

gomba

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Originally Posted by Vadim

WG connected right before TB:

Good to see there's a source before the TB. I'm going to relocate my wastegate from the IM to this source. Is this on a lowport or highport Vadim?

-G

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2012-04-15 13:58:43

#25

BenFenner

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That's the same source I'm switching to on my lowport. It's there on the lowport for sure.

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2012-04-16 01:23:13

#26

Vadim

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Originally Posted by gomba

Good to see there's a source before the TB. I'm going to relocate my wastegate from the IM to this source. Is this on a lowport or highport Vadim?

-G

I believe all but VE have those, part of emissions system. I will check tonight when I get home.

On another note, my mbc is sucking, boost spikes to 11 psi and falls off at 7-8 psi. I plan to just adjust in the gtir wg rod and control boost like that.

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2012-04-16 03:17:29

#27

lynchfourtwenty Online/offline status of lynchfourtwenty is unknown

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Son of a B!!!!

so theres a boost leak gone lol.. i never saw that little guy.. went and capped it off just now.. i bet that will help!

thanks for the pics vadi boi!

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2012-04-16 03:20:34

#28

Vadim

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Just checked, HP and LP both have them, VE TB doesn't though.

Originally Posted by lynchfourtwenty

Son of a B!!!!

so theres a boost leak gone lol.. i never saw that little guy.. went and capped it off just now.. i bet that will help!

thanks for the pics vadi boi!

That's a pretty massive leak too!

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2012-04-16 03:22:54

#29

lynchfourtwenty Online/offline status of lynchfourtwenty is unknown

SR20VE-T Boost Junky!

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Yep mines a highport TB, slightly different position, but its there.

cant wait to see the difference!

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2012-04-16 03:44:59

#30

Vadim

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High port TB works fine? I have a bored TB that I can put to use now!!!

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