evap
 

Data on disconnecting a evap is instant+ 5 mpg

Could you give a bit more info on that ?

I disconnected the vacume line at the throttle body less vacume draw is letting my engine not work as hard is what I think is causing the increase in mpg

You're going to have to give a lot more info than that. :) Especially considering what the evap system does (traps and burns gas vapors). What you're saying really doesn't make sense.

or it could make your car run even worse i have a small hole in 1 evap line that makes it start really rough cant imagine the entire line being gone

hmm it might of been the vacuum advance line he disconnected.. making the car run slower / lower rpm.

How did you measure that if you caused a vacuum leak the AFM will see less airflow and some types of instrumentation can be fooled into thinking your car is using less fuel when it isn't also punctuation is your friend

happen to disconnect the vacuum line about the same time you started driving like you cared about mileage?

I disconnected it and ABA tested it if you don't believe me then you all can go to help because I'm tired of everybody being an expert and an asshole to me next up is if you want the government that dissent have your best unrest at heart then leave it on. Next my truck didn't get a vac advance distribute and evap came out it the 80 s so guess everyone's car tan bad then didn't it

None of us are trying to be jerks, Ramman. If you've been here any length of time you'd understand why the skepticism is worth while for us. You can't simply come here and say 'hey everyone, disconnect your evap system to gain 5 mpg' and have everyone just say 'okay brand new guy we don't even know, I'll go do that right now just because you said so'. If that were what we do, everyone here would be adding acetone to our gas, with a pill in our gas tank, and boiling water with hydrogen generators, and everyone would probably be getting worse mileage than their stock vehicles. We take the time to PROVE our modifications here, we don't take anyone's word for it. Even (actually especially) the veteran members here understand the value of testing new modifications and wouldn't make claims without information to back them up. Testing proves what works or not.

If you disconnected your evap system and it worked for you there probably is a reason (creating an unmetered vacuum leak for instance), but that may have more effects than you are aware of. There is a reason the evap system is on a vehicle, and its certainly not to reduce your mileage.

If you have done testing post the info. This is what we ask of everyone.

Or you are brain washed by the government because the hho works and lets see 100 ft of vacume line making the engine work harder take it of at the tb and that is less vCard you have to make. All the evap does is collect vapors bif whoop

And BTW the government and EPA don't care bot you or three environment

Did you blank off or just disconnect the evap?

Im interested in seeing your data, as from your other post, your CAI reduced your fuel consumption roughly by a 1/2 and disconnecting the evap reduced it by another 1/3. Which in total, is a 2/3 reduction of your original fuel consumption from these mods.

*calculated from the 10-11mpg with CAI stated in your post, 5-6mpg before CAI fitted and now 15-16mpg with a disconnected evap.

Please note, I have not been "brain washed by the government" and as such I am somewhat sceptical of your claims, which are not backed up.

No I was getting 12 ish. Put 33s on the truck
So out went down too ten.then the cai got me back to ten.then then the. Superchip tuner to 11. Then my intake blew out so I was down too 5 ish. Now with new 02 sensors and no evap I'm getting 16. And am now done with this site and the people on it.

Oh by the way why don't y you go take your evap of at your tb block it off there and see what it does cars from the beginning of cars to 96 didn't care bout evap

could just disconnect your purge valve's electrical connector, assuming the purge valve isnt leaking, this should accomplish the same thing. and possibly isolate the change from other vacuum lines, or changes in un metered air entering your engine.

cars long before 96 had evap systems. might not have consisted of much more than a gas cap, the canister, and a vacuum line hooked up to ported vacuum on a carburetor, but they had evap systems

since 1971 according to wki

Huh by disconnecting it at the tb you eliminate all the vac lines I capped it off there

i have two questions for you sir;

1;why should we prove what your saying is true(most modern evap systems only work on start up; to produce easier start up; the gas vapors come from the tank)

and 2; you put 33's on your truck did you change the speedo gear/sensor(because i doubt they are stock for your truck; and it's more then likely why your truck is not telling you the right distance you've traveled)

ps. most of your posts are in the unicorn corral.

No evap is on all the time and I changed the Speedo for bigger tires and their stock ones and its you don't want to test it then shut up

For stock tires and back to stock

ok simple test, you know what gas smells like right; stick the vacume hose by your nose and tell me if you smell gas? not running

With it running ornot

it was your oxygen sensors

not your fuel evaporation system

is my bet,from what you said you did
when you seen the improvement

Quote: ramman360
Now with new 02 sensors and no evap I'm getting 16
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Try not fly off the handle, here..
weez all aadults

he could be doing more highway driving (his truck is 11(city) 13 16(hwy)

and i am not an adult i am a AI implanted potato sitting on a couch fermenting in beer

All in town and evap a week after the sensor

I would be very impessed if you're getting 16mpg from a 360 cu in motor in the city. I'm not saying you're wrong, id just have to see proof.

01 4x4 sport qc sb 360 auto.
265 75 16 tires(31.5" tires not 33")

engine mods
no muffler 3 inch exaust (to each their own)
modded tb cai(to each their own)
New front 02 sensor.(will help)
Hughes plate(throttle body spacer?)
superchip87 tune(not sure if it does anything)

outward appearance mods
Testing partial grill block and bumper block.
Has shell or soft cover (tonneau cover?)

i'm thinking you have a vacuum leak somewhere in your evap system. 2001; it's possible either the rubber or steel tubing developed a hole(mercedes-benz likes plastic lines instead of rubber :P)

do you have a check engine light on?

have you reduced your speed?

Really, there should be some minimuum test to post. Like how to use puncuation. Everybody is babysitting this guy.....we go uot of our way.....and we get 'shut up'!

Maybe he's texting while driving.....I don't know.

...and simultaneously applying for a Darwin Award possibly?

while his typing skills are flawed; your attitude is flawed. understanding where someone is coming from rather then *****ing about them would help.

guess the american system of education strikes one out of the park again, eh?

thanks for quantifying your fe, but as someone else said the improvement from blanking off the evap is probably due to replacing the o2 sensors, unless something was seriously wrong with the evap system before.

Replacing the old blown out intake with a CAI isnt a 5mpg improvement from the CAI- it simply restored the fe lost by the ruined intake to the same level as before.

Nothing personal, its just what you've claimed isn't backed up so I'm not going to try it. Although 16mpg does sound quite reasonable for a truck of that size in city driving.

Hummmm, not a big fan of dumbing down.:(

Being oblivious to what everyone else is doing.......:rolleyes:

...some of us are obviously oblivious, others are not-so-obvious about it (ha,ha). ;)

forest from the trees, interesting not a new concept; not too sure you'd know a tree if it hit you.

but best of luck with that.

for the op;

if you do have a check engine light; key on and off 3 or 4 times, it should give you any codes stored

There has to bee an award, obviously, for that sentence.....:eek: I am just oblivious to what it could be.....:rolleyes:

none cents or nonsence
 

thanks mwebb. i was wrong about my info on evap

i have the service manual for my jeep(knowing chrysler it's operation probably doesn't change between cars); anyway i am wrong the evap solenoid doesn't work at start up cold(timer delay for hot) or other wise it only works after reaching closed-loop, after that 5-10 per second.

I wish people would read. A I have a touch screen smartphone. Second if you have a question call me cause its quicker if you can be nice my number is 765 465 8065 early morning or later afternoon because you guys are clueless too what iv done and am doing.

Our mistake :rolleyes:

your a Narcissist :eek: