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#1
10-09-2007, 01:16 PM
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Gutting the pre cats
well i just wanted to make sure but if i gut my pre cats.. more that likely i will get a (CEL) ????if i do get a CEL will the o2 simulators be able to solve this problem
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#2
10-09-2007, 01:32 PM
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Re: Gutting the pre cats
They should..
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#4
10-09-2007, 10:01 PM
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Re: Gutting the pre cats
have fun gutting
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Daily Driver: 2004 Jeep Grand Cherokee Special Edition 1994 Mitsubishi 3000GT SL-TT Automatic - Black 3.05 L Arias Forged Pistons, Pauter Forged Rods, DR Stage 3 heads, 3SX TD05 kit w/ E16G's, CX Racing FMIC, 550cc injectors, Walbro 255lph pump, + supporting mods 1994 Mitsubishi 3000GT VR-4 - Black Intake & Boost Controller so far 2006 Sea-Doo RXP Supercharged, Updraded SC, IC + supporting mods
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#5
10-10-2007, 08:44 AM
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Re: Gutting the pre cats
lol yea i heard it sucks but o well... well thanx i will go ahead and order the o2 simulators..... also another question do you think it will have at least a considerable hp gain or pull harder to redline?? basically i am asking is are the results from gutting the precats worth the trouble??
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#7
10-12-2007, 10:44 AM
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Re: Gutting the pre cats
SORRY, noob still learning the basics
What is a CEL? What are o2 Simulators/what do they do? I have a 97 SL and this sounds like a fairly simple (though time consuming) project...Will it mess with emissions and make my car illegal? Im not really lookin to do that.
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'97 3000GT SL -Short Ram Intake -Test Pipe -Custom Exhaust -17" Infinity Rims -Infinity Kappa Component Sound System -Kenwood Double Din Headunit
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#8
10-12-2007, 10:59 AM
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Re: Gutting the pre cats
CEL: Check Engine Light
as for passing or failing emissions it just depends on the state you're in, each one is different...some dont even have inspection as for o2 simulators...i dont know...can garuntee stealthee does
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yup, here i am
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#9
10-12-2007, 12:21 PM
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Re: Gutting the pre cats
the o2 simulators hook up to the o2 sensors... the o2 sensors get a certain resistance that they have to stay in, in order for your check engine light not to come on, so if you gut the pre cats, the o2 sensors will have a different reading and it will set the check engine light on. so you hook up the o2 simulators and they will simulate the resistance, making the ecu think that everything is ok, so your check engine light won't come on even though you have your precats gutted... so far to my knowledge i think that is what they do but stealthee would be a better source
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#10
10-12-2007, 01:09 PM
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Re: Gutting the pre cats
It wont mess with emissions.
As stated it makes the ECU believe the pre cat's properly functioning by sending the correct signals to the ECU.
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#11
10-12-2007, 04:58 PM
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Re: Gutting the pre cats
from what i've seen the precats only function befor the car and exhaust is at running temp, after that all you need is the main cat
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'93 3000gt VR-4
170k, 27k on JDM motor MBC @ 14.5 psi Datalogger Intake T-Pros Downpipe Gutted Pre Cats Mods to come: Upgraded Fuel System and 75 shot of Nitrous, Full Exhaust and hopefully 15Gs Audio Sony Deck Eclipse 6x8 2 ways in the back Clarion Kevlar cone Component System in the front 2 Alpine Type S 10 inch DVc Subs 1 Audiobahn 10 inch DVC D Jones Series One 800 Watt Jensen amp and a soundstream 300 watt 4 ch to the speakers And still under 4000 lbs w/ me in the car
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#12
10-12-2007, 05:00 PM
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Re: Gutting the pre cats
Well then with o2 simulators telling my car that everything is ok with my engine, Will my CEL come on if there actually is a problem that I need to know about?
__________________
'97 3000GT SL -Short Ram Intake -Test Pipe -Custom Exhaust -17" Infinity Rims -Infinity Kappa Component Sound System -Kenwood Double Din Headunit
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#14
10-12-2007, 06:09 PM
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Re: Gutting the pre cats
Quote:
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