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General Forums => The Mess Hall => Topic started by: jinxjay on May 15, 2011, 10:54:41 AM

Title: smog delete
Post by: jinxjay on May 15, 2011, 10:54:41 AM: hi folks, i have a '89 wrangler 2.5l tbi

can i get rid of all the smog crap / vacume and leave just the map sensor connected?
Title: Re: smog delete
Post by: Jeffy on May 15, 2011, 12:31:30 PM: Looks up Nutter Bypass on google.
Title: Re: smog delete
Post by: chardrc on May 15, 2011, 02:05:59 PM: Quote from: Jeffy on May 15, 2011, 12:31:30 PM
Looks up Nutter Bypass on google.
Nutter Bypass wouldn't apply to a tbi 2.5l...

if you really wanted to and didn't care about emissions or the law, you could rip out everything except the line for the Map, the pcv lines, the line for the heater controls, and the line for the central axle disconnect if you want 4wd to work (unless you went with a posi-loc or 1 piece axle).. there really aren't that many vacuum lines on the tbi compared to the late carburetor motors egr and hot air intake systems are about the only two none essential things (the gas vapor purge is interconnected with the egr circuit.
Title: Re: smog delete
Post by: grumpygy on May 15, 2011, 02:11:33 PM: So how much HP would you gain by doing that.
Title: Re: smog delete
Post by: Torch_Ind on May 15, 2011, 02:34:04 PM: Quote from: grumpygy on May 15, 2011, 02:11:33 PM
So how much HP would you gain by doing that.

nothing lol
Title: Re: smog delete
Post by: Jeffy on May 15, 2011, 03:11:02 PM: Quote from: chardrc on May 15, 2011, 02:05:59 PM
Nutter Bypass wouldn't apply to a tbi 2.5l...
Ah, that's right it's requires a carter carb.

In any case you would not see any increase in HP. Unfortunately you don't get something for nothing.
Title: Re: smog delete
Post by: jinxjay on May 16, 2011, 04:15:44 PM: thanks for the replys, all the pipes on my charcoal can were split and engine did not run right,

i bit the bullet and replaced all of them toinght, and it seems much better,

decided not to rip it all out for now
Title: Re: smog delete
Post by: neale_rs on May 16, 2011, 04:25:36 PM: Probably better just to maintain the system ... unless you find yourself in a "Road Warrior" scenario.