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Join Date: Feb 2004
Location: louisiana
Posts: 1,481
without a check valve here you're leaking boost, but that isn't the big problem at the moment.
I would assume fuel pressures are messed up.


Old 02-07-2009, 06:58 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #61 (permalink)
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 8,844
Quote:
Originally Posted by Dynamohum View Post
Hi, 427 HP @ 1 bar! nice very nice, please tell us more about your set up.


What size and comp ratio are your turbo pistons?
What fuel pressure reg are you using and what's your pressure settings?
Are you still running stock injectors?
I/C size?

Any pictures?

Thanks
930 pistons, Protomotive FPR, pegged out fuel pressure gauge (over 5 bar), 380cc Bosch injectors, full deck IC (not sure of brand). Pics are on my other computer at the moment.
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Cory - turbo'd '87 C3.2 Guards/Blk, 3.4, 7.5:1 CR P & C's, soon to be 993SS cams and GSXR 750 ITB's fed by 964 intake, Borg-Warner S366 turbo @ 1.4 bar, Treadstone full bay IC, TiAL F46 WG, HKS 1 1/2" BOV, twin 044 pumps, MegaSquirt 2 (v3.57 board) w/EDIS, Tramont wheels (285's rr, 225's frt), Big Reds frt, 993 rr., tower brace, MOMO wheel
Old 02-07-2009, 08:31 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #62 (permalink)
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Join Date: Jan 2003
Location: Chicago, IL
Posts: 179
Two things:
1. You need to check your fuel pressure. How do you know you're not at 6.5 bar? (which would cause your injectors to work improperly).

2. You need a wideband O2 sensor.

If you didn't already do both of those, count yourself lucky you didn't blow up your engine, seriously.

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1995 993 C2, speed yellow. Protomotive Stage 1 twin turbo. JRZs, RS parts, DL1 logger, etc.
Old 02-09-2009, 12:02 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #63 (permalink)
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