Open dump or recirculated dump?

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Jul 8, 2008 | 10:02 PM

#41

chintastictc

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From: Valley Stream, NY

not ZPI unfortunately...im very dissapointed in the performance of my kit....lol i just lost to a stage 2 cobalt SS my 4th gear dies out cuz i was a good car or two ahead of him until about 85 sri to go way off topic but i gotta get rid of this kit and go DEZOD

Jul 8, 2008 | 10:28 PM

#42

Mr_Meaty

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From: VEGAS BABY!

hmmm...my TT kit came with a dumptube...but I think most open dump kits do NOT come with a dump tube.

Jul 8, 2008 | 11:27 PM

#43

Ace83

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I say tuning is the key man.. if you have a stage 1 just tune it right, if a zero then go for a stage 1. But just change the turbo if you want more power than spending for another full kit

Jul 9, 2008 | 12:01 AM

#44

rhythmnsmoke

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Quote:

Originally Posted by chintastictc

The kit is not at fault. The owner has to make it what it is. You don't take care of it, you can not expect it to perform. And dont tell me it opperates like its in top shape, cause no real Stage 1 would loose to a Stg 2 Cobalt.

Jul 9, 2008 | 12:41 AM

#45

rhythmnsmoke

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I didn't see anyone mention it thus far, but the sound of the WG changes also with the length of the dump tube. My dump tube isn't really a dump tube, as it's only about a 2inch pipe coming off the WG port.

Jul 9, 2008 | 03:09 AM

#46

Ace83

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^^ yeah i used to run a 3" dump tube and now it sound different with a longer one just next to the oil pan.. i dont hear it much with windows close but its hell loud with the windows open

Jul 9, 2008 | 10:44 PM

#47

chintastictc

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From: Valley Stream, NY

Quote:

Originally Posted by rhythmnsmoke

Quote:

Originally Posted by chintastictc

im not too mad about it im on 7.5 pounds with a base map nd when i give it full throttle it misfires so i did race him at 3/4 throttle with my a/f sitting at 10.0:1

Jul 10, 2008 | 12:06 AM

#48

rhythmnsmoke

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^^Tune it.

Jul 10, 2008 | 12:19 AM

#49

Guru

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Quote:

Originally Posted by paul_dezod

Quote:

Originally Posted by Mr_Meaty

Yeah, the WG only opens up when you are at full boost...when I was at 5psi, I'd be open all the time, and yeah, it's loud...now I"m at 9psi and I hardley ever hit full boost on regular driving.

Not true at all! The WG valve is always moving open and closed. As the boost progresses toward the spring pressure, the valve begins to open more and more. When the spring pressure is achieved, it's wide open. So in essence, it's open a tad at 0 VAC, and progresses to wide open by spring pressure.

This is not always true. Running an AVCR you can keep that thing completely shut until you reach target boost.