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#1
11-16-2006, 06:32 AM
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Can the 4.0L Cat be removed without an engine light coming on?
Can I remove the cat on my 4.0L, or install a magnaflow cat, without throwing a code and causing the engine light to come on? Thanks
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'98 Eclipse RS ENGINE: Twin Ceramic Ball Bearing T3/T4 with ceramic blades (20G for sale!), FMIC, 3'' Intercooler Piping and Down Pipe, Dump after Down Pipe, Walbro 255 FP, 450cc 4G63 Injectors, Greddy E-Manage, TurboXS DSBC (4/7psi for now). SUSPENSION: Sustec Front and Rear Lower Tie Bars, Suspension Techniques Front and Rear Sway Bars, DC Sports Front and Rear Upper Strut Tower Bars, Eibach Pro Kit Springs, KYB AGX Adjustable Struts, Polyurethane Bushings Everywhere. 
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#2
11-26-2006, 08:34 PM
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Re: Can the 4.0L Cat be removed without an engine light coming on?
if you remove the cat, you will throw a code. go with a free flowing cat. I used a dynomax race cat with suctom made down pipe and a Remus cat back. no problems and no codes. felt only a little more power though. my opinion, it wasnt worth the cost
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#3
11-27-2006, 03:18 PM
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Re: Can the 4.0L Cat be removed without an engine light coming on?
I put a high flow cat and muffler on my YJ with 2.5 and lost a noticable amount of low end torque. It reved better and had a little more top end, but I did miss the low end.
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