Muffler restriction vs. cylinder temp.

[cus_deluxe]

I did a egr remove on my VW Diesel and it gave me additional 7 mpg. (63 mpg )

Who likes to smell his own farts all day?

I need to do that to mine!!

 

[RI Chevy]

They work very well.....at restricting air flow.

So these are no good Brad?
They don't work?
I am assuming that you have tried these copper exhaust flanges.

 

[Fruecrue]

I need to do that to mine!!

I did the beer can EGR delete on my 6.0 GMC, never looked back.
Best excuse ever to pound a beer!

 

[paragonbuilder]

I did the beer can EGR delete on my 6.0 GMC, never looked back.
Best excuse ever to pound a beer!

How long til it burns through? I used a 4” sq blank plate cut to size on my Jetta.

 

[RI Chevy]

Was it a jetta diesel Dan?

 

[Fruecrue]

How long til it burns through? I used a 4” sq blank plate cut to size on my Jetta.

Don’t know for sure, but I’d imagine it’ll hold up for the life of the engine.
I deleted my EGR valve after it failed due to carbon build up. The valve failed open causing a random misfire code at idle. GM 6 liters are prone to burning oil, especially the high mileage examples like mine.

 

[paragonbuilder]

Was it a jetta diesel Dan?

Yes, I miss it...

 

[paragonbuilder]

Don’t know for sure, but I’d imagine it’ll hold up for the life of the engine.
I deleted my EGR valve after it failed due to carbon build up. The valve failed open causing a random misfire code at idle. GM 6 liters are prone to burning oil, especially the high mileage examples like mine.

The Jetta tdi’s are famous for the intakes plugging up from the egr. They sell a 1/4” thick aluminum block off plate. I thought maybe it was cuz it would burn through.

 

[RIDE-RED 350r]

Don’t know for sure, but I’d imagine it’ll hold up for the life of the engine.
I deleted my EGR valve after it failed due to carbon build up. The valve failed open causing a random misfire code at idle. GM 6 liters are prone to burning oil, especially the high mileage examples like mine.

Can you elaborate on the beer can EGR delete?? Does it trip an emissions code?? I have a 5.3 that drinks a qt every 700 miles once it passes about 1700-1800 miles on an oil change

 

[RI Chevy]

Yup. The diesels burn hotter and require a much thicker block off plate.
Those jetta diesel engines were awesome. 45 to 50 mpg average. With good maintenance and a few minor upgrades, they really perform well.

 

[cus_deluxe]

My understanding is you gotta deal with the check engine light unless you take it to somebody w a vag-com who can “tune it out” so the computer doesnt recognize the egr anymore. Mines definitely down on power since i bought it, about 60k miles ago. Due for intake manifold cleaning as dan said.

 

[Fruecrue]

Can you elaborate on the beer can EGR delete?? Does it trip an emissions code?? I have a 5.3 that drinks a qt every 700 miles once it passes about 1700-1800 miles on an oil change

EGR bolts on to a flange, opens and closes to allow flow.
Remove EGR, drink beer (can), cut can open to a flat plate and trace EGR onto aluminum minus the passages. Re-install EGR with beer can blocking off passages.
Electrical harness still connected, just no flow of exhaust gasses to intake.
Computer doesn’t know the difference and no codes are generated.

 

[Redbull661]

"Muffler restriction vs. cylinder temp"

- stock muffler with restrictive baffle, stock port, and stock restrictive screen. Max temp = 423F.

- take the restrictive screen out, take the restrictive baffle out. Max Temp = 411F

Whopping 12 degrees! or 2.8% reduction.

- go to full 3x large ports, no baffle, wide weave screens = 402F ...only get another 9 degree drop.

And for the scoring record... Before I did that test. @tree monkey said he didn't think there would be much difference in temps. I thought there would be. That gives Scott an ongoing score of ~40 and Julian 3.

 

[Fruecrue]

"Muffler restriction vs. cylinder temp"

- stock muffler with restrictive baffle, stock port, and stock restrictive screen. Max temp = 423F.

- take the restrictive screen out, take the restrictive baffle out. Max Temp = 411F

Whopping 12 degrees! or 2.8% reduction.

- go to full 3x large ports, no baffle, wide weave screens = 402F ...only get another 9 degree drop.

And for the scoring record... Before I did that test. @tree monkey said he didn't think there would be much difference in temps. I thought there would be. That gives Scott an ongoing score of ~40 and Julian 3.

Excellent test and results.
Good to know that you can produce more power to make the cut faster and end up with lower temps.
I’d say that deserves a best answer vote.

 

[RIDE-RED 350r]

21 deg is 21 deg. I can tell you with the weather we have been experiencing here in CNY that there's a big difference between 21 deg and 0 deg! Lol! But seriously..I'd still say it's worth it.

 

[paragonbuilder]

My understanding is you gotta deal with the check engine light unless you take it to somebody w a vag-com who can “tune it out” so the computer doesnt recognize the egr anymore. Mines definitely down on power since i bought it, about 60k miles ago. Due for intake manifold cleaning as dan said.

Not sure a vagcom can tune it out. I have one. I had it tuned out with a performance tune.
The intakes can get crazy plugged. I’ve seen them down to a half inch... damn epa
I miss that car. It was a dog when I got it. But it was fun to drive wen I sold it... what was I thinking?

 

[nohoff]

For those 1.9l VAG diesel are EGR delete kits from VW available.
They used them for industrial/marine engines.

 

[RI Chevy]

What do you think about a large hole in the front cover Julian? Instead of the side ports? Might get the heat out even quicker.

 

[Al Smith]

I did the beer can EGR delete on my 6.0 GMC, never looked back.
Best excuse ever to pound a beer!

Well beer cans are good for a lot of things ,probably the best is providing a device to hold the beer .A wooden keg is way to heavy for the average person .That's why in days of yore they used 6 big Clydesdales to haul the beer wagons .All the Dalmation did was drink the beer and pee on the oak trees along the beer route .Dogs will be dogs

 

[RI Chevy]

Hmmm. Weird and interesting. Thanks.