The vacuum hose reduction: walkthrough and pics - Page 3 - 3000GT/Stealth International Message Center

3Sfever · 02-20-2007, 05:00 AM

I copied Struggly's instructions into the Wiki how-to section. It can be updated as things like "after pictures" are made available. Putting this in the Wiki makes it easier to find later.

Monochrome · 02-20-2007, 10:13 AM

Excellent write-up Clint!

If I get a chance to do another vac reduction soon, I'll add instructions for keeping the EGR valve as well as eliminating the clutch vac tank & combining the brake and clutch vac assists.

TiberiusTribun · 06-20-2007, 04:55 AM

What purpose does the FPR selenoid serve anyways? Do you need to keep it or can it go along with the other selenoids?

zba857 · 07-13-2007, 10:21 AM

Quote:

Originally Posted by TiberiusTribun

What purpose does the FPR selenoid serve anyways? Do you need to keep it or can it go along with the other selenoids?

From what i have read it is only for hot starts.

Why does brett brinkman(sp?) say this mod loses hp? I think he said it runs richer?

twospoons · 07-13-2007, 10:39 AM

Quote:

Originally Posted by Highboosted

You can use the purge valve to plug the front turbo intake pipe. I used a vacuum cap.

On 94-95 cars you will get a CEL by removing the EGR system, but using the EGR-T for boost logging and keeping the sensor may prevent this, but it didn't work for me so EGR stays. EGR will NOT cause you to fail emissions unless the inspector is doing a visual inspection and owns one of these cars...

fyi... i never got a CEL on my Cali-spec '94 ecu from the vac reduction or the egr removal. the egr was completely unplugged for about 6 months before i started doing any boost logging.

slow91stealth · 07-13-2007, 10:49 AM

ive had this done for a long time and never got a CEL and the only noticable thing was the cleaner look i get form my engine bay... no downsides yet and have passed emissions twice with out the egr or evap canister(maybe a fluke?)

TiberiusTribun · 07-13-2007, 10:53 AM

I just removed all of the selenoids on my '92 lets see how that turns out. If the FPR is just richening the a/f mixture for starts I don't need it. And I guess a/f controllers like the AFC-R do have a similar function.

silky · 07-17-2007, 08:39 AM

can you do a vacuum reduction but keep the evac system? I just want to reduce the amount of visual vacuum lines?

and I see that when you do the vacuum reduction you remove the solenoid pack. But what happens if you are not running a manual or electric boost controller (ie stock bcs). Can I keep the solonoid pack but only hook up the bcs solonoid? I do have an avc-r but I have not hooked it up yet.

TwinTurboKid · 07-17-2007, 12:01 PM

Quote:

Originally Posted by slow91stealth

ive had this done for a long time and never got a CEL and the only noticable thing was the cleaner look i get form my engine bay... no downsides yet and have passed emissions twice with out the egr or evap canister(maybe a fluke?)

1st Gen TT's dont throw a code. They are suppose to run a visual on it, but never do.

silky · 07-18-2007, 08:17 PM

ok, I ripped everything out...hard lines, and soft.

Now I am wondering what I do about my EGR. I do not have EGR block off's so do I have to do anything special? What abou tthe vacuum lines that come out of the EGR do I have to cap them or are they no important?

wastegates: I want to run the BCS but only temporarily until I install my AVC-r. If I don't run any vacuum lines to the wastegates will the turbos only reach like 7 pounds or will they boost unlimited? Also, do I need clamps on the wastegate lines? the stock ones have clamps on them but they seem like a bitch to get on.

02-20-2007, 05:00 AM	#21 (permalink)
3Sfever Forum Member Join Date: May 2004 Location: Virginia Drives: '91 Stealth TT Trader Rating: (3)	Re: The vacuum hose reduction: walkthrough and pics I copied Struggly's instructions into the Wiki how-to section. It can be updated as things like "after pictures" are made available. Putting this in the Wiki makes it easier to find later. __________________ -Ron '91 Stealth TT purchased Aug 2004

02-20-2007, 10:13 AM	#22 (permalink)
Monochrome BAWC: In the Mix Join Date: Aug 2002 Location: SE, PA Trader Rating: (28)	Re: The vacuum hose reduction: walkthrough and pics Excellent write-up Clint! If I get a chance to do another vac reduction soon, I'll add instructions for keeping the EGR valve as well as eliminating the clutch vac tank & combining the brake and clutch vac assists. __________________ 05 MSM MX5 with 5K miles FOR SALE! 92 Green Stealth RT NA - 3.5L 4G64 94 Blue SL - coming soon 98 Black VR4: 100% stock - totalled by an Illegal 2-12-08 95 White Stealth TT: 11.852 @ 118.25 - sold 95 Green Stealth TT - Sold 95 SSG Stealth TT: 11.981 @ 115.81mph - sold Nonstop Mixes by Monochrome "I don't actually work on cars, I just talk about them on the internet."

06-20-2007, 04:55 AM	#23 (permalink)
TiberiusTribun crash & rebuild Join Date: Sep 2005 Location: Mainz, Germany Drives: 1992 eurospec 3000GT Trader Rating: (1)	Re: The vacuum hose reduction: walkthrough and pics What purpose does the FPR selenoid serve anyways? Do you need to keep it or can it go along with the other selenoids?

07-13-2007, 10:49 AM	#26 (permalink)
slow91stealth SlowTT Join Date: Sep 2005 Location: Cranston, RI Drives: not right now Trader Rating: (28)	Re: The vacuum hose reduction: walkthrough and pics ive had this done for a long time and never got a CEL and the only noticable thing was the cleaner look i get form my engine bay... no downsides yet and have passed emissions twice with out the egr or evap canister(maybe a fluke?)

07-13-2007, 10:53 AM	#27 (permalink)
TiberiusTribun crash & rebuild Join Date: Sep 2005 Location: Mainz, Germany Drives: 1992 eurospec 3000GT Trader Rating: (1)	Re: The vacuum hose reduction: walkthrough and pics I just removed all of the selenoids on my '92 lets see how that turns out. If the FPR is just richening the a/f mixture for starts I don't need it. And I guess a/f controllers like the AFC-R do have a similar function.

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07-17-2007, 08:39 AM	#28 (permalink)
silky mc.noob Join Date: Sep 2006 Location: Toronto Drives: consistently slow Trader Rating: (8)	Re: The vacuum hose reduction: walkthrough and pics can you do a vacuum reduction but keep the evac system? I just want to reduce the amount of visual vacuum lines? and I see that when you do the vacuum reduction you remove the solenoid pack. But what happens if you are not running a manual or electric boost controller (ie stock bcs). Can I keep the solonoid pack but only hook up the bcs solonoid? I do have an avc-r but I have not hooked it up yet. Last edited by silky : 07-17-2007 at 09:29 AM.

07-18-2007, 08:17 PM	#30 (permalink)
silky mc.noob Join Date: Sep 2006 Location: Toronto Drives: consistently slow Trader Rating: (8)	Re: The vacuum hose reduction: walkthrough and pics ok, I ripped everything out...hard lines, and soft. Now I am wondering what I do about my EGR. I do not have EGR block off's so do I have to do anything special? What abou tthe vacuum lines that come out of the EGR do I have to cap them or are they no important? wastegates: I want to run the BCS but only temporarily until I install my AVC-r. If I don't run any vacuum lines to the wastegates will the turbos only reach like 7 pounds or will they boost unlimited? Also, do I need clamps on the wastegate lines? the stock ones have clamps on them but they seem like a bitch to get on.

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