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Dec 10, 2010 | 09:29 AM

dt69999

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emmisions delete

i have a 91 f150 with the 302 and would like to get rid of all the emmisions ans vacume lines i dont need. im not too familiar with the whole emmision setup so any added input would help. i know this wont pass emmisions but im not worried about since im making this truck into my weekend toy. so any help would be appreciated thanks

Dec 10, 2010 | 09:34 AM

DBGrif91

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Joined: Jul 2009

Posts: 2,541

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From: Des Moines

Are you prepared for your truck to only get about 8-10 mpg, maybe less? And are you prepared to always see a check engine light on? Because that's what's going to happen if you remove the emissions components.

Just asking- I could list a few things you'll need to do but I'm no expert so I'll let others do that.

Dec 10, 2010 | 04:36 PM

aguitarestv

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Joined: May 2008

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i just removed the air pump (on my 5.8) and everything that runs to and from it. plug any vacuum lines you take off. leave the egr, tap, and tad censors though. dont forget, you can run vacuum lines to the "tree" on the plenum. cleans up the engine bay nice and you wont get the CEL if you do it right.

Dec 10, 2010 | 05:45 PM

lew52

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Well theres not a whole lot of vacuum lines to take off , most of them you need , you can remove the cats and air pump , you can remove the egr if you want, RJM injection makes a kit for that , what are you trying to do with the truck (weekend toy ?? )....Lew

Dec 12, 2010 | 05:53 PM

dt69999

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i have read on here that its best to leave the egr but want to get rid of the smog pump and clean up the engine bay a little and as far as what im doing is im making a mudder for the weekend. so leave egr take out smog pump remove lines then wont i need a shorter belt? have the size?

Dec 12, 2010 | 07:10 PM

raystankewitz

Posting Guru

Joined: May 2010

Posts: 1,146

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From: Central Indiana

Great idea!

Deleting that smog pump is worth a whole 3 hp.

Just sayin' . . .

Dec 13, 2010 | 01:49 AM

TexasGuy001

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Joined: Sep 2001

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I think if your truck is your daily driver and is mostly stock, I would leave everything in place. It makes it easier to keep it running right and to diagnose and repair problems later. This is just my 2 cents. Now if you are building a true hot rod similar to what Lew did that thats a different story.