check your afr during these conditions (get logs). maybe you have a bad front o2 thats why you are having bad gas milage and just like what other said that could also cause the excess fuel to ingnite while going out.

 

I just replaced both o2 sensors last week. Im installing that o2 sensor mod that brings the o2 sensor farther away from the exhaust because i dont have a cat. Ill be doing alot of diagnostics tomorrow. Hopefully its just that the rear o2 sensor is getting a reading and screwing with the computer and causeing it to lean out my car. Hopefully that is.

 

the only vaccume line that I know of that could effect this would be the vaccume line on the fuel pressure regulator.

 

I checked them all last night but i can always double check. I have a fuelab fuel pressure regulator.

 

Wrong....It's completely normal. ITS HOT! It's going to glow! Watch the video that dude posted earlier....That motor is obviously running excellent, nothing wrong with it, and that sh*t glows bright fiery red, especially in the dark.

It's hot metal...................................... going to glow................probably nothing with afrs, fuel, any of that. An evo that has been tuned to perfection will have a glowing hot turbo when you get on it at all.

 

Yeah but the thing is, is that i wasnt getting on it. My normal driving right now cause its not tuned yet is no more than 4K rpms. It shouldnt get that hot. The engine in the video was being pushed to its limits. thats why it got so hot so quick. I was driving home from work in traffic. No pushing the car to its limits there. But im going in tomorrow to see what i can figure out with it and get it tuned next week.

 

Agreed 100%. Unless you are making stupid ridiculous amounts of power at high boost pressures there is no reason what so ever that your turbine housing should glow. I have never once had mine glow even after a number of hard runs to log and tune. And 13mpg is the dead giveaway right there, I still get in the low 20's fully tuned with normal driving.

 

yeah im getting tuned next week if my turbo will last. Good thing i got a beater haha. No but i think my ecu is getting a bad signal from my o2 sensor since im cat-less. so im gonna do the extender mod and hook up the engine diagnostics tomorrow and erase the codes if it has any which im sure it does. Ill be back tomorrow to let everyone know how it turns out.

 

Rear o2 is used to check if your cat is working it. it doesn't tell the ecu to dump more fuel. hope you change oil often your oil might be contaminated with fuel if you are running pig rich.

 

On a cold night if I look at mine right after I get out of the car the exhaust side will be glowing red. Sounds normal to me. Same on last Evo.

 

Back in DSM land some people had glowing turbos and others didn't. If I recall correctly, the difference was finally traced in the glowing cars to retarded timing. Retarded timing didn't allow the mixture to combust completely before the exhaust valve opened.

 

oK I GOT 2 CODES:

P0171-FUEL SYSTEM TOO LEAN BANK 1
P0420-CATALYST EFFICIENCY LOW BANK 1

I HAVENT CLEARED THEM YET. I PUT IN THE O2 EXTENDER MOD BUT HAVENT STARTED THE CAR YET.

 

so basically, your running too lean and your cat is blocked...

 

I dont have a cat. I cleared the codes and took it on a drive and it ran alot better. I pulled it back in and checked the codes again. And a pending code was showing the fuel being to lean. but the catalyst efficiency was gone. So i cleared it again. I think after taking it on a drive the ecu will reconfigure everything.

 

The p0420 will come back, just a matter of time. Once you get the rear o2 moved out of the exhaust stream a little it will function fine. The rear sensor is just to detect whether or not the cat is working properly, it doesn't provide any fuel feedback (that's what the front o2 sensor is for). You need a tune bad, I'd recommend keeping out of boost as much as possible until you do.