EGR Valve Block-off

[what_is_dsm]

Hey all...
i'm gonna get right down to the point.
I read everything there is about EGR block-off plates but still have a question that everyone seems to overlook:
If the EGR valve IS blocked off, will it cause the engine any harm? Will it make the engine run worse? Will it cause the engine to wear out prematurely?

Basically, does it do ANY harm at all by being blocked off? And wouldn't it be easier to get rid of the whole EGR valve alltogether and just buy some shorter bolts to keep just the block-off plate on???

Thanks,
respect hardcore

ps. btw, i got a 1990 Turbo Laser

 

[jw]

EGR is for emission purposes and will not harm the engine in any way. In fact, it will keep the intake manifold cleaner. Get a block-off plate and eliminate the hoses going into it. You can use the stock bolts with the plate, they work perfect.

 

[what_is_dsm]

jw, thanks alot for the info...
one more question: where do i block off the hoses going into the EGR?
should i just take them off alltogether and just put a plug on the nipples where the hoses originate from?

respect hardcore

 

[Zerocygnal]

Check out this link for removing emmisions equipment
http://www.taboospeedshop.com/emissions.htm

 

[99blkgst]

Just a thought. Removing the EGR valve does absolutely nothing for gains in performance. The EGR valve only works when cruising on the highway. It doesn't function at all at idle or WOT. Just my .02 We just got throught with a big heated argument in class about it. My teacher is a SOLO II racer. I didn't believe him at first but he proved his point. So basically people who buy the blockoff plate are just wasting their money.

 

[Zerocygnal]

That's the way I look at it. It in no way effects performance. If anything I would just cap it off if I removed everything else. About the biggest gain you'll get is a less cluttered engine bay.

 

[99blkgst]

i just wish i was the lucky guy who thought of the plates. I'd be rich

 

[candela]

Well in a sense it does, but not really you know. Id does operate at idle though, read threw the manual, I think it says it in there. Either way, really its just for less crap in your engine bay, and a cleaner intake manifold (and it does make it dirty as hell). I guess in a way without all the crap in your manifold it could help gas milage

 

[jw]

Eliminating the vacuum lines except the needed ones does nothing to performance but perhaps save you a few pounds with the charcoal canister and some misc brackets removed. It also prevent the possibility of vacuum leaks from any of the hoses you have. I bet you have put in more money than that $12-$15 block off plate and it does absolutely nothing when it comes to performance. In fact if you really want to save the money, either cap off all the ports or cut yourself a gasket with no holes and stick it in.

 

[candela]

Im talking just driviability, Im not saying your going to go faster when you take it off... I jus tcut myself a block off plate from a red bull can, it was free and now I dont have a clogged up intake manifold anymore. Hence it can help with performance and has been known to increase gas milage as you get a slightly less mixture off co2 in there when it is blocked off.

 

[what_is_dsm]

I guess in power/weight ration every pound counts so removing the unnecessary emissions system sounds like a good idea !

Plus, it would definitely keep the throttle body and manifold clean of the crap that gets up inside of it..

And about the block off plate. Why in the world would you guys want to spend $12-$15 for one?? just go to your local auto parts store, buy the original gasket for the EGR, trace the contours at home and return it for a refund. (i work at Advance Auto so i did it there, ehhehehe). Then go home and trace the template onto an aluminum piece (about 1/8 inch thick) and cut it out with a hacksaw. Drill the bolt holes out with a drill and you're done !! at most you'll pay is $5 for a good aluminum piece.

About horsepower: wouldn't the air be cooler in the intake therefore the combustion will be a little better, thus giving more horsies?

respect hardcore -- sorry for the long post

 

[serviceguy]

I don't know, this is debated every now and then over the several DSM related forums. Since I am a good(service)guy and I do not want to mess with emissions on my car, when I had to fix a rough idle that could be EGR related I decide to go unusual and clean the valve real well and it pretty much fixed my problem (my mechanic in Itali says the EGR gas actually helps, I have no idea how anyway). I expect it to get clogged sometime in the future again but as I said I want my car to be perfectly aligned with current emissions regulation (may be I should dare more but I am a guest in your country, a perfectly legal and certified for what it's worth, but still a guest!). Just my opinion.

 

[what_is_dsm]

Hey guys, just found out from the New Hampshire lawbook (i live here) that just for bypassing or modifying the FEDERAL emissions (i stress FEDERAL) there is a $10,000 fine and upto 6 months jail.

Hmm...made me think if i really want to eliminate the emission system on my car if it won't even give me more HP.

respect hardcore

 

[baby huie]

ok i have a ? can this be done on my 95 ealge talon with out any problems such as idle or something. ive herd its only for 1gs but the guy up there had a 95 gsx and he did it did u have any probs or any thing hit us up with some more info or any one els that did please post.

 

[vr4_rider]

Hey, guys.

Where can I get some block off plates?

I did the EGR block off on my 3000GT vr4 and it's working fine. I did the Vac reduction, too (took out all the FP solenoid, boost solenoid, purge valve, etc).

Can I do the vac reduction on my 95 TSI?

Where can I buy EGR plates?

Thanks,
Trung

 

[92redman]

Reason for egr is NOx emissions. The burnt exhaust gas is put back into the intake which displaces oxygen so less fuel is burnt, less heat is made so less NOx. Side effects of egr is reduced detonation due to the lower combustion temps(drops from about 4500 to 2500 give or take), and better gas mileage due to the displaced oxygen.

If it were me, I would not block it off unless it is malfuntioning and causing driveability problems and you aren't required by inspection to have it functioning.

 

[olmytsi]

go to a junkyard, find a 1.8l 1g and unbolt the egr valve and u will see a block off plate since they have it stock. Just take that and put it on ur car and ur done.

 

[Jazzie6044]

Except, like 92redman said, egr helps a car run better. introducing unburnable gas into the chamber cools the combustion process, because no burning. with out the egr, the combustion will be much hotter because it is getting much more oxygen then designed. a race car does not need an egr because 1. they do care about emissions 2. they dont care about gas mileage. 3 they dont cruise down they highway for long periods of time.
yes the passages get blocked, thats life. take everything apart and let it soak with intake cleaner. then the car will perform better and get better gas mileage pluses for everyone.

 

[awddsm95]

the main reason i would do it is to make the engine less complicated, it cleans it up alot and makes everything look alot better.

 

[Tallen]

As stated it helps with gas mileage. Just buy a new EGR, I think their relatively cheap.

 

[Shadowfax]

Can you guarentee that the EGR is not opening under WOT? I know 3/S guys always claimed that wasn't the case, and I found it to be quite untrue several times.

The EGR DOES dirty up the intake and the intake ports on the head- ever hear of someone doing the intake cleaner mod? The Mopar Combustion Chamber cleaning? It's not something that just suddenly appears- those unburnt gasses also have burnt residue and carbon- gunking up the motor is the quickest way to have unclean emissions, and poor performance.

You can say putting inert gas into the mix will help your mileage- I'm gonna ask how? Better yet, I'm gonna make a bet that if you were to increase the inert gas mix 10 fold that your car wouldn't run. And if you decrease the inert gasses to nil, your car would have a more complete combustion- hotter temps in the cylinder, which would more completely burn both oxygen and the rest of the natural air mix. Isn't the point of the catalytic converter that the honeycomb metal has greater surface area, thus increasing the temps in the cat further burning unburnts? Wouldn't burning a greater amount in the combustion chamber accomplish the same thing?

It makes no sense that recycling the exhaust helps HP, nor that it ultimately does anything to really help emissions. If you wanted to inject inert gasses into your chambers, you could do it easier- the EGR is there so you inject some of what didn't fully burn the first time back in- and that means that some of what did burn gets tossed in too- which if you have that crap in your motor- it means that there are places in your motor that are dirty, and that doesn't help your performance no matter how you slice it.

 

[92redman]

Can you guarentee that the EGR is not opening under WOT? I know 3/S guys always claimed that wasn't the case, and I found it to be quite untrue several times.

The EGR DOES dirty up the intake and the intake ports on the head- ever hear of someone doing the intake cleaner mod? The Mopar Combustion Chamber cleaning? It's not something that just suddenly appears- those unburnt gasses also have burnt residue and carbon- gunking up the motor is the quickest way to have unclean emissions, and poor performance.

You can say putting inert gas into the mix will help your mileage- I'm gonna ask how? Better yet, I'm gonna make a bet that if you were to increase the inert gas mix 10 fold that your car wouldn't run. And if you decrease the inert gasses to nil, your car would have a more complete combustion- hotter temps in the cylinder, which would more completely burn both oxygen and the rest of the natural air mix. Isn't the point of the catalytic converter that the honeycomb metal has greater surface area, thus increasing the temps in the cat further burning unburnts? Wouldn't burning a greater amount in the combustion chamber accomplish the same thing?

It makes no sense that recycling the exhaust helps HP, nor that it ultimately does anything to really help emissions. If you wanted to inject inert gasses into your chambers, you could do it easier- the EGR is there so you inject some of what didn't fully burn the first time back in- and that means that some of what did burn gets tossed in too- which if you have that crap in your motor- it means that there are places in your motor that are dirty, and that doesn't help your performance no matter how you slice it.

Do you even have a clue what you are talking about? Automobile manufacturers wouldn't spend the extra money on egr valves if they didn't help emissions. I don't understand how you can think that reducing the displacement of an engine will not give you better gas mileage. Nobody said that it increases hp, it decreases temps which decrease chance of detonation.

The honeycombs in the cat are not just metal, there is a couple(3) different catalysts which actually reduces NOx, carbon monoxide, and unburnt hydrocarbons. A high combustion chamber temperature pruduces high levels of NOx emissions.

How could you easily inject inert gas into the cylinders without an EGR? Have a tank of already combusted gases in the trunk?

 

[Defiant]

the main reason i would do it is to make the engine less complicated, it cleans it up alot and makes everything look alot better.

If you can see your EGR, you're standing too close. It takes my smog mechanic five minutes to find the damned thing.

 

[92redman]

If you can see your EGR, you're standing too close. It takes my smog mechanic five minutes to find the damned thing.

Exactly, there is a lot more noticeable things you could focus your efforts on in your engine bay.

 

[turbo90gsx]

I blocked mine off last night. I also took out the evaporative canister, and all other vacum lines related. You can see the block off plate on my car, but you have to be on the passengers fender. It also helped a buch on getting all of the unnessesary shit out. The main reason I did this is because my EGR valve was not functioning*spelling* properly. I also did this because the last time I had to replace my starter, my hands got chewed up really bad from all of the little metal clamps. I know that this is bad for the enviorment, but I live in the boonies, so it really doesn't matter to me. BTW I now run an open downpipe, no cat.

I bought mine off of ebay. 15 shipped, came in 4 business days.