has anyone done this mod? results??

Subject: has anyone done this mod? results?? Fri Aug 10, 2007 1:22 pm

http://rivfaq.bravehost.com/

Subject: Re: has anyone done this mod? results?? Fri Aug 10, 2007 1:23 pm

sorry...that didn't work.

Boost Bypass Mod

What's the boost bypass device:
The boost bypass valve is a valve that controls when air is allowed to be pressurized in the intake manifold by the supercharger. During normal operation, the bypass valve remains open to allow pressure to bleed through the open valve and back into the intake system before the supercharger rotors. This increases gas mileage at low to mid throttle application but hampers performance by not allowing boost pressure to develop until heavy throttle application.

Last edited by on Fri Aug 10, 2007 1:42 pm; edited 2 times in total

https://rivperformance.editboard.com/Supercharged-3800-Tech-c2/Series-I-Engine-Transmission-f13/Boost-Bypass-Valve-Mod-t177.htm

https://rivperformance.editboard.com/Supercharged-3800-Tech-c2/Series-II-Engine-Transmission-f4/i-ve-been-playing-t887.htm

https://rivperformance.editboard.com/Supercharged-3800-Tech-c2/Series-II-Engine-Transmission-f4/aftermarket-wastegate-t1098.htm

http://www.google.com/custom?hl=en&safe=off&cof=&domains=rivperformance.editboard.com&q=boost+bypass&btnG=Search&sitesearch=rivperformance.editboard.com

How not having boost early is "hampering performance" I'm not sure. I can spin tires at 1900 RPM. With 3.8 Liters, do I need more torque down low? Maybe it would be good. BMW's new 3 series makes 300 lb-ft at 1400 RPM. We need some dyno charts both ways to know for sure.

_________________
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'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes

'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30
3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails
KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers
EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch
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'70 Ninety-Eight Holiday Coupe 455cid • 116k miles
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Subject: Re: has anyone done this mod? results?? Fri Aug 10, 2007 1:38 pm

All you do is loosten it up, and move the bypass valve diaphram upwards and then tighten it back down. It will prevent a little bit of boost from leaking at low rpm's in reality, it wont really do to much either way. Its not like a blow off valve.

Subject: Re: has anyone done this mod? results?? Fri Aug 10, 2007 9:20 pm

I think this is the link that you wanted http://www3.sympatico.ca/aepa/bypassvalve.html.

To get the correct link, just right click on the link and click copy shortcut and it should copy the address.

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1998 Supercharged Riviera - Custom CAI, Alpine spx-13ref, Infinity 6x9's, Alpine 4 Channel Amp, Kicker KX3, Silverstars, STB, Hawk Brake Pads, Monroe Air Shocks, KYB GR2

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