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Search: Posts Made By: MetroMPG
Forum: General Fuel Topics 10-29-2006, 05:25 PM
Replies: 79
Views: 12,908
Posted By MetroMPG
'Nother question: for the purposes of testing,...

'Nother question: for the purposes of testing, someone on TeamSwift suggested using bottled CO2 and feeding it into the intake. Not a bad idea, assuming I can get flow rates high enough to work. And...
Forum: General Fuel Topics 10-29-2006, 05:23 PM
Replies: 79
Views: 12,908
Posted By MetroMPG
Would a cooler cause water vapor to condense out...

Would a cooler cause water vapor to condense out of the exhaust? If so, would you have to have a way to periodically drain it?

---

Noticed another point in the VX article linked in that...
Forum: General Fuel Topics 10-10-2006, 09:47 AM
Replies: 79
Views: 12,908
Posted By MetroMPG
High EGR also leads to mushy/delayed throttle...

High EGR also leads to mushy/delayed throttle response, which is another reason it would be avoided at idle - reasons of driveability.

---

Another question I've been mulling over: if EGR were...
Forum: General Fuel Topics 10-04-2006, 05:17 PM
Replies: 79
Views: 12,908
Posted By MetroMPG
Me too. I'm no expert. My interest in FE,...

Me too. I'm no expert. My interest in FE, spurred on by this site, has resulted in a lot of unintended education. :)



Good point. I'm willing to take a driveability "hit" for better FE. ...
Forum: General Fuel Topics 10-04-2006, 04:09 PM
Replies: 79
Views: 12,908
Posted By MetroMPG
"The automaker got it right" doesn't necessarily...

"The automaker got it right" doesn't necessarily apply to all areas of design or tuning.

Witness the transmission issue. The people who've done swaps all get better FE than was originally...
Forum: General Fuel Topics 10-04-2006, 02:14 PM
Replies: 79
Views: 12,908
Posted By MetroMPG
Not sure if you're saying this, Rick, but EGR...

Not sure if you're saying this, Rick, but EGR isn't lean burn.

With EGR, the air/fuel mixture would remain at stoich (in closed loop via the O2 sensor). It's just that with EGR active, there's...
Forum: General Fuel Topics 10-04-2006, 01:38 PM
Replies: 79
Views: 12,908
Posted By MetroMPG
I wonder what makes higher cylinder temperatures:...

I wonder what makes higher cylinder temperatures: lean burn, or high rates of EGR.
Forum: General Fuel Topics 10-04-2006, 11:57 AM
Replies: 79
Views: 12,908
Posted By MetroMPG
I was under the impression you couldn't really do...

I was under the impression you couldn't really do that any more with a modern car in good condition. :confused: One of the ways of the 3-way catalyst is to rid the exhaust of the carbonium...
Forum: General Fuel Topics 10-04-2006, 11:08 AM
Replies: 79
Views: 12,908
Posted By MetroMPG
Simplest (for testing) would be the exhaust tip...

Simplest (for testing) would be the exhaust tip at the back of the car, and a long *** hose back to the front :)

If it worked, then you could look at splicing into a pipe in/near the engine...
Forum: General Fuel Topics 10-04-2006, 10:25 AM
Replies: 79
Views: 12,908
Posted By MetroMPG
Um.. Not actually planning any test. But,...

Um.. Not actually planning any test.

But, pick up what?
Forum: General Fuel Topics 10-04-2006, 08:44 AM
Replies: 79
Views: 12,908
Posted By MetroMPG
A relatively simple & crude way to test this...

A relatively simple & crude way to test this would be to get one of those long exhaust hoses the mechanics use, and set it up to feed exhaust into the intake while driving and monitoring the...
Forum: General Fuel Topics 10-04-2006, 08:35 AM
Replies: 79
Views: 12,908
Posted By MetroMPG
omgwtfbyobbq: are you sure you don't have things...

omgwtfbyobbq: are you sure you don't have things backward, re: cylinder temps with EGR present? (And related issues of detonation/octane)

The little reading I've done on EGR says that it lowers...
Forum: General Fuel Topics 10-03-2006, 06:53 AM
Replies: 79
Views: 12,908
Posted By MetroMPG
Understanding exhaust gas recirculation systems ...

Understanding exhaust gas recirculation systems

https://www.asashop.org/autoinc/nov97/gas.htm
Forum: General Fuel Topics 10-03-2006, 06:33 AM
Replies: 79
Views: 12,908
Posted By MetroMPG
I've also read a bit about this in the past month...

I've also read a bit about this in the past month or so. At first glance it makes sense. Something worth looking into.
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