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Re: Has anyone E-tested their car after removing the pre-cats?
Harry Newman "newsvx" removed the two pre cats in his 92 pearlie.After fabricating 2" headpipes, he replaced them with Aeroturbine AR20 resonators into a Magnaflow 94007 High-flow cat and had no emission problems or codes that I know of.
I did exactly the same thing on my 96 Polo. New 2" headpipes, AR20 resonators into a Magnaflow 94037 High-flow cat (with third 02 sensor bung)
I kept getting a check engine light for a OBDII code 420, which showed "Catalyst System Efficiency Below Threshold". I assumed the main cat alone was not strong enough to handle the stricter system requirements of OBDII once the pre-cats were removed.
I took off the front AR20s and replaced them with Magnaflow cats and have not had a problem since. Passed emmissions with flying colors and never another CE light.
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Subaru Ambassador
1996 Polo Green LSi #216 ..138,100 miles. ..SOLD
JFICX8659TH100216.....Date of Manufacture: November 16, 1995.....
Fuji Heavy Industries..Ōta North Plant....Ōta City,. Gunma Prefecture, Japan
In-Service Date: January 2, 1997
"The Pristine Green Polo Machine”
First Polo Green on the Network
First Clear front turn signals, JDM Alcyone hood emblem, rear panel, and BOXER engine cover on the Network (US) (2000)
First 5000K HID factory fog lights (2007)
First SVX JDM BBS wheels on a USDM SVX (2013)
HID lighting (5000K) for headlight and H3 fog lights, PIAA SuperExtreme 120W high beams, rebuilt EG33 longblock, Cometic head gaskets, Phase II flexplate, AMR aluminum radiator with custom silicone hoses, 160A high-output alternator in aluminum-ceramic coated case, new design alternator wiring upgrade v.4, rare factory headlight protectors, refinished JDM BBS mesh aluminum wheels and custom, polished billet aluminum new hex center caps, LED grille mod, R1 Concepts high-carbon cryo slotted rotors, Akebono ceramic pads, Goodridge S/S braided brake lines, Smallcar Stage 1 shift kit, ThermalTech aluminum/ceramic-coated valve covers, Energy Suspension urethane front & rear swaybar bushings, Bontrager22 rear swaybar with QS Components Chromoly Teflon/Kevlar endlinks, "$15.00/5 minute" suspension mod. Hella Supertone horns, Custom stainless steel exhaust system with 2" headpipes, Magnaflow cats, AeroTurbine AR25 resonator /AWD "Bullet" muffler.
R.I.P. 2010 Subaru Outback Limited 2.5 CVT...338,000 miles. Totaled by a 1,300 lb. COW March 4, 2016 
2014 Hyundai Avante Limited ...178,000 miles. Actually quieter and smoother than the Outback 
2007 Mazda Miata MX-5 PRHT...102,000 miles.
Plenty of parts, service and windshields. 
4th Registered Network member —2/21/2001
My NEW locker..I...My Email..I..Wikipedia/SVX .
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