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williamsvts · 23rd August 2011, 17:07

here is the unedited version

Subject: RE: dump Valve
Date: Mon, 22 Aug 2011 08:30:31 -0700
From: GarrettGearhead@Honeywell.com
To: williamsperformance@live.com

Hello Marc,

I’m not sure what you mean by “dump valve,” so I’ll address my best hypothesis which is that it is a blow off valve.

If this is what it means, then I highly recommend using one in order to reduce the occurrence of surge in the turbo and significantly increase the life of the turbo.

Neither of these greatly effects the lag of the turbo. Proper turbo matching, tuning and a host of other things does, but control devices such as blow off valves and wastegates aren’t going change the transient response that much and should absolutely be used on gasoline engines.

I will tell the person with whom you seem to be having this discussion the same thing.

Regards,

Garrett Gearhead

for people that want to see what garret actually replied.

is there a reason you edited this out your email? he must of said that to you as your email after that was regarding that paragraph about transient response?

23rd August 2011, 17:07	#77
williamsvts Saxperience Post Whore Join Date: Feb 2006 Location: northumberland Posts: 7,693 Car(s): pulsar gtir, mk4 astra sxi iTrader Score: 3 (100%)	here is the unedited version Subject: RE: dump Valve Date: Mon, 22 Aug 2011 08:30:31 -0700 From: GarrettGearhead@Honeywell.com To: williamsperformance@live.com Hello Marc, I’m not sure what you mean by “dump valve,” so I’ll address my best hypothesis which is that it is a blow off valve. If this is what it means, then I highly recommend using one in order to reduce the occurrence of surge in the turbo and significantly increase the life of the turbo. Neither of these greatly effects the lag of the turbo. Proper turbo matching, tuning and a host of other things does, but control devices such as blow off valves and wastegates aren’t going change the transient response that much and should absolutely be used on gasoline engines. I will tell the person with whom you seem to be having this discussion the same thing. Regards, Garrett Gearhead for people that want to see what garret actually replied. is there a reason you edited this out your email? he must of said that to you as your email after that was regarding that paragraph about transient response? Last edited by williamsvts; 23rd August 2011 at 17:19.