If you gutted the cats are you sure the manifolds aren't cracked? That is usually what causes the cats to fail on this truck. You need Uprev tuning as well to correct the fuel mixture with gutted cats. Possible engine damage can occur on non flex trucks due to lean conditions. You cant uprev tune a cracked manifold either so I would prepare for JBA longtubes.
2005 titan won't rev pass 3000.
Have a 2005 titan. Idles and starts fine. If you try to drive it it will only do 30 mph or so and runs really bad. If you rev in neutral it wil rev to 2500-3000 and misses and shakes when it starts missing one bank goes lean .60 v. And the other goes to 2.2. At idle both banks are 1.5. Fuel pressure is 58psi Any help would be appreciated. Cats have been gutted also. The rest is totally stock
Thanks kerry
Thanks kerry
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4wd has 4 cats and 2wd has 2 on the 2005. Which cats did they gut?
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