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E85 startup tuning???

They are stills staying pegged. I don't see a vacuum leak that would cause this. Looks like I will just run out the e85 fuel and then strip it all down. ill keep the e85 fuel pump the the rest goes.
 


Should I just leave the 3.0 pulley and belt wrap kit on there when I take everything back off. It will be a normal GTP with some mods in my signature along with a Meth kit. Or should I swap the 3.0 out for the 3.25?
 
Ohh geez. Thanks. I roll a lot smaller than I should. 3.25 is back on there right now. That’s what I ran before all this. It ran well without much knock at all. I will definitely pay close attention and put the 3.4 on if I have too!! Thanks bro!!
 


rickisrad said:
Ill contact ZZP to see if they have the file. One thing I was looking at my LTFT from my last scan and they were positive. Most +16. Which is very lean. Can someone please link how to change that with HPT. I've had brain procedures the last 4 weeks so I have a hard time remembering anything. Any help is appreciated.
Click to expand...

You don't know how to adjust your MAF? Are you tuning just by fuel trims, or do you have wideband? Exactly what process are you using to adjust fuel? Come down to Columbus, I'll help. Don't throw in the towel when u are frustrated, your probably just overlooking something.
 
I can’t find a vacuum leak. I used water with a bit of methanol in it to spray around and nothing. I took the oil cap off and it didn’t seem to have vacuum. I’m going to have to find somewhere with smoke to find the leak when I get the money.

bandook- I figured out what I was looking for I believe. I have a lot of memory loss from brain procedures I went through very recently. If I had money I would take you up on your offer in a heartbeat.
 
I think this is the same issue that caused me to come back from e85!!

I used propane and cigar and no leak noticed.

After a lot of research I think it’s either the MAF or more than likely the o2 sensor. I’m thinking the o2 originally was damaged from the e85.
 
E85 won't damage an O2 sensor. But it could be a bad sensor. Scan O2 mv and you'll see what it's doing. It should be oscillating rapidly. It may not be though since you have 16.4+ ltft.
 
This site will not me upload a scan. :(

The o2 sensor has movement but doesn't seem like as much as normal but close. On the scan the LTFT was pegged at 16.4 most of the time. This is really throwing me for a loop.
 




Are you getting misfires? You should log them, and injector duty cycle too. Looks like vac leak to me. Your trims start to go negative right before you enter PE. If you are motivated you can make a simple smoke machine with a soldering iron, a paint can, baby oil, rag and some tube and 2 fittings. Very simple, costs 30 bucks at most and has helped me tons.
 
I have checked this thing up and down for a vacuum leak. I have sprayed the lines and intake down and inspected every connection. For a smoke test on these a cigar works very well. Take the brake booster off and light the cigar and let the hose smoke it. I’ve done it on other cars and it showed the leak in a hurry!!!!! I will check the exhaust header connection at down pipe again. Once I get some money I am going to replace the o2 sensor as a try. In the mean time I will continue to check for vacuum and exhaust leaks.
 
Yeah, definitely look for an exhaust leak. I looked at your scan....your O2 is reading weird. It's not consistent like I would see with a vacuum leak. It looks more like an exhaust leak pre O2 or just a bad sensor.

If you want, you can disable the o2 and see if the car runs better.

In your VCM editior,
Engine>Fuel>Oxygen Sensors

Change "closed loop enable" to 284.

That will keep it from using the O2 sensor for fueling calculations. Keep in mind that the car isn't made to run permanently like this, it's just for testing.
 
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