EGR delete?

[95' s14]

Im trying to get my 240sx back up and running and ive been thinking about getting rid of the egr i hear alot of you talking about it but i cant seem to find any technical info about i need help i really dont want all that s*** running back through my engine so tell me how you did it and if you have step by step pics id love to see them

[dumblikewoah]

this may help

zerothread/157751

[Wc240]

honestly, read up on the function of the egr. youll learn that it DOES NOT increase performance, but it DOES make your engine run hotter(heat is bad) and lessens your fuel mileage. so really, what are you trying to accomplish? just say no

[seang]

EGR does cool down combustion chamber temps, and is only on when it needs to be. The downside here is that it can work too well. For example, you are approaching a corner in 3rd gear at like 5100rpm or more, the snarly ka24 is on the boil, you lift throttle creating a massive amount of vacuum in the intake manifold, this level of vacuum is helping modulate your vehicle, giving you razor sharp throttle response, the last thing you need is the EGR trying to decide whether or not to open up in the middle of your millisecond throttle manipulations. The upside here is that you can simply unplug the vacuum hose from the EGR valve actuator (not the actual EGR valve, but I guess it wouldn't hurt if you did), and plug it, effectively defeating the EGR. There is no mechanical modifications, and you can hook it back up whenever you want to in a matter of seconds. A little pneumatic on/off switch would be the shizzle.
Modified by seang at 9:46 PM 10/7/2009

[Wc240]

^^^ very good point, thank you, i should have included that the "actuator" is the BPT valve. you could disconnect it like previously stated, and it will work fine. fast easy cheap and isnt a felony . Seriously, on a street car, dont go through the trouble to "delete" all of the system, its rediculous

[seang]

Oh, so thats what its called, (BPT valve), cool, that's definitely the one I was talking about. Is it really a felony to f*** with the EGR in sunny California? That's harsh, they don't give a f*** do they.

[Wc240]

it is illegal anywhere to remove a federal emissions devive. egr, cat, etc. whether they charge you for it or not is up to the fuzz. but, if they catch you(even where there is no smog) with a hallow cat, test pipe, egr block off, they can bust you. hence why "slighty tampering" it while your at the track would be your best bet if you must. specially becouse when you do something like block it off, its always obvious that something was supposed to be there

[95' s14]

thank you that really helps you are a life...... better yet an engine saver

[Bigvinnie]

I wouldn't delete it. If everyone did it our air would be high in acid. Bloody noses and acid rain equals no fun.Plus I have an 8month old kid, I don't want him breathing that sh$t either.NOX other wise known as nitric oxide (acid), and parts of sulfiric oxide (acid) are literally not the type of chemicals you want in the air. Even when you are at a stop light with the engine at idle you can breath in those gases and they will make you sick.EGRs are a good thing. EGR's effect throttle response, but not over all HP.

[volcomskater773]

kill it. block the hole in the intake mani and exhaust mani. reroute a few vacuum hoses and viola.

[Wc240]

kill it. block the hole in the intake mani and exhaust mani. reroute a few vacuum hoses and viola.

or, just leave it alone as we have mentioned, there are alot of cons to removing it, and what, 1 possible pro? before you start modifying the parts on your car, you may want to learn what those parts do that your modifying for no reason.

by the way, NOx stands for Oxides of Nitrogen. the x is because there are so many different amounts. that coupled with hydrocarbons (HC) and sunlight is what causes smog

[liquid_cool]

some say to keep it for fuel milage and to save the F-in planet...if your just usin your ride for a dayly..then keep it..the only reason to delete it would be becouse your taking your car to the razors edge of tuning ..for responce....hp..torque...yes deleting that pile of crap does help throttle responce...this you will need if you plan on drifting or road racing at a track...it allso cleans up the engine bay behind the motor...yes you will run hotter!..so if ya plan on it..get a better radiator and a 1.4 bar cap..that fixes that issue..its really up to your prefrence..clean up your bay..or keep it OEM...good luck what ever you decide...P.S. ..ive personally helped many delete all the crap off of the ka24de..and not one of them has any issues or complaints...so screw the green planet freaks..do as you wish.

[volcomskater773]

cool are you following me? lol

[liquid_cool]

me following you!..ney sire..im a leader..i follow no one..lol...na man..i just hit up post's that interest's me randomly..just me i guess.

[volcomskater773]

same here guess we have similar taste

[Bigvinnie]

some say to keep it for fuel milage and to save the F-in planet...if your just usin your ride for a dayly..then keep it..the only reason to delete it would be becouse your taking your car to the razors edge of tuning ..for responce....hp..torque...yes deleting that pile of crap does help throttle responce...this you will need if you plan on drifting or road racing at a track...it allso cleans up the engine bay behind the motor...yes you will run hotter!..so if ya plan on it..get a better radiator and a 1.4 bar cap..that fixes that issue..its really up to your prefrence..clean up your bay..or keep it OEM...good luck what ever you decide...P.S. ..ive personally helped many delete all the crap off of the ka24de..and not one of them has any issues or complaints...so screw the green planet freaks..do as you wish.

I see no problems with egr delete as long as the fuel type is switched over.E85 is perfect for egr delete. It keeps EGT's lower. It will also release a mild form of acid that is on the level of vinegar. Much safer alternative than high NOX. I don't agree with egr delete for gasoline.

[95' s14]

one con no one has mentioned is that it re-routes exhaust gasses which is burnt fuel and air which equal hydrocarbons which means Double the hydrocarbons running through your combustion chamber and that boys and girls is bad for your engine thats the real reason i want it gone, Engine life. I just had a salvage motor rebuilt and i dont want all that s*** ran back through it

[Wc240]

one con no one has mentioned is that it re-routes exhaust gasses which is burnt fuel and air which equal hydrocarbons which means Double the hydrocarbons running through your combustion chamber and that boys and girls is bad for your engine thats the real reason i want it gone, Engine life. I just had a salvage motor rebuilt and i dont want all that s*** ran back through it

um, no. burnt fuel+ air doesnt egaul hydrocarbons. HC's are raw fuel, unburnt gas. when it enters into the intake it is known as an inert(see, non flammable/combustable) gas. it takes up the space(not all of it, like 20-30 percent if im not mistaken) in the combustion chamber. this is whats called a displacement misfire. the exhoust displaces a lil bit of the fresh air/fuel mixture. buy doin this, one, the reused gases are cooler. and they cant burn again. not as much temps/pressure in the combustion chamber. thats what it does.in any case, if it were HC's(wich its not) that would be the same as running a tad rich, not that bad. also, your computer would sense this, adjust, and correct this to bring it bach within the correct fuel ratio for that speed cell at cruse, but this is, once again, not the case.remember, these emissions systems were designed with the worlds air in mind, and engine life, gas mileage, and the consumer. notice that your KA has been seen at 300,000 to 365,000. probably higher. the old motors, with there open crankcases and down tubes and no evap, got what, 9MPG on a good day and went a long life of 75,000 miles? your right, all that emissions is probably killing your engine. i hear carbs will make em last forever