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#1
05-14-2006, 07:02 AM
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FPR upgrage??
So i have read lots now on the impreza FPR upgrade!
Question 1: Would there be any benifit for me with an Australian Delivered svx (stock ecu) using an impreza FPR, or is it only of use with LAN's ecu upgrades?????? Mychailo can answer this one easy, were you running a stock ecu when you did the fpr and maf bypass moad to yours?? Question 2: would a 1992 RS liberty turbo (australian delivered intercooled 2.0T ) FPR do the trick?? Or a 1998 gen 2 liberty FPR (any coments) Cheers, Jake
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1992 Pearl / Black SVX removed intake silencer, k&N pannel filter, trans cooler, 94 JDM 4eat, Noltec front swaybar mounts, Motorsport D&S disks with EBC Greenstuff pads Last edited by -JJ-; 05-16-2006 at 05:27 PM. 
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#2
05-17-2006, 07:03 AM
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Hey Jake, The Impreza RS FPR alone will richen the afr to around 10:1 or 11:1 at WOT high rpm which is beyond the optimum value for an NA motor. LAN's Stage 1 ecu programs a richer afr than stock, so using LAN's stage 1 with the Impreza RS FPR would result in an afr that is far too rich, probably around 9:1.
The maf bypass + the Impreza RS fpr are meant to be a low cost substitute for LAN's stage 1. Using the maf bypass + Impreza RS fpr + LAN's stage 1 together would provide no benefit. It would be a similar result to using just the Impreza RS fpr and LAN's stage 1, but not quite as rich of an afr, probably around 10:1 or 11:1. I don't know if the Liberty fpr would work. The part number for the 2000 Impreza RS fpr is: 22670AA240. Try calling your local Subaru parts person to see if they stock that part number. If not, Auburn Subaru in the USA will sell you one and ship it for a very reasonable price. You'll want to speak to Jason Douglas in the Parts Dept. His email is jdouglas@auburnsubaru.com.
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Mychailo :: 2006 Silver Mitsubishi Evolution 9, E85, 34 psi peak, 425wtq/505whp DJ :: 1995 Laguna Blue SVX L AWD 5MT (sold) Visit my locker SVX Mods: ND iridium spark plugs, Impreza RS fpr, afr tuned to 13.2:1 using a custom MAF bypass, custom exhaust, WRX 5MT w/ STi RA 1st-4th gear & stock WRX 5th gear, Exedy 13 lb flywheel & Sport Clutch, STi Group N tranny & engine mounts, urethane spacers in rear subframe, rear diff mounts, and pitch stopper, SVX Sport Strut Springs (185f/150r), custom 19 mm rear swaybar, urethane swaybar mounts, Rota Torque 17x8", 225/45-17 Proxes 4 tires, Axxis Deluxe Plus organic brake pads.
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#3
05-17-2006, 07:27 AM
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Quote:
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Dave - 03 Baja - 92 SVX - 86 Brat - 08 OB 3.0
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#4
05-17-2006, 08:50 AM
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Thanks for the replies!!
The reason for my asking is because i can get the 98 liberty (legacy) 2.5 FPR for next to nothing, alternatively i can get an sti one with is 43.5 psi once again it will cost me very little Cheers, Jake
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1992 Pearl / Black SVX removed intake silencer, k&N pannel filter, trans cooler, 94 JDM 4eat, Noltec front swaybar mounts, Motorsport D&S disks with EBC Greenstuff pads Last edited by -JJ-; 05-18-2006 at 06:52 AM.
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