hey craig.
was the ecu unplugged?

 

I am not sure but I can find out, would that matter if it was not?

 

I know how you feel. I felt the same way when i was troubleshooting the low battery code/red battery code for 4 wks straight. Didnt want to drive it, sell/trade the damn car for something else. Finally with your help in parts, i got it resolved!!!

Hang in there...only thing left is 02 sensor, since you have replaced/checked all of your igntion/fuel (plugs, wires, coil packs, injectors, corn fuel)

 

The car was on the dyno today, and the O2's responded as they should. We adjusted fueling and timing, and the breaking up did not change.

I am wondering if permanently turning off the rear o2's with the kleeman flash could cause this issue.

Could a bad map sensor or crank position sensor could be part of the problem too.

 

Craig - What are your long term fuel trims for bank 1 and 2? How many miles have you driven since the last flash yesterday?

 

9%, the car has seen no miles from yesterday and the problem has not changed.

 

Man this sucks. I feel for you.....*** been there done that.

 

Hey my friend:

Usimng your words, and KNOWING your level of ability, look at the kleeman flash.

I KNOW you can solder wires correctly, and doubt the new sensor is bad, but it could be, aka slim chance.

Gas you know is good, along with coils, wires, etc, etc.

My money is on Kleeman. NOT that they are bad, but there could have been a hiccup.

GOOD luck

 

Do you have good data logs from the times its breaking up. If so you can see if the map and crank sensor are working properly by logging boost and RPM.

 

I will have some more feedback for you guys tonight when I talk to BIP. I updated my original post with the first set of misfires that occured on July 1. Between July 1 and August 5, the car sat due to lack of E85 and the only two cylinders that did not have misfires are 1-2.

 

check ecu wire harnesses as you need to take the ecu out to send to kleemann for the flash so maybe one of the sets of pins is not installed snug.

 

Apologies if I've missed this detail out, but have you had the map verified as not having been corrupted in transit, assuming you had it emailed to you? I've had situations where maps have been corrupted and needed ironing out upon receipt of them.

Failing that, my money would be on the 02 sensors as well.

Hope you get it sorted man. I literally know how you feel with this misfire

 

Thanks for everyones input on this battle, BIP figured out the problem and it is a mind bender. We had my car on the dyno, adjusted fueling up and down, timing up and down, nothing. Hooked up star, drove it on the street, did tons of logging. The problem lies between 2200-3800rpms with you easing into boost, it would buck hard. Then in the same breath, put your foot through the floor, it would blow right through that rpm problem area with no breaking up.

We did smoke tests, leak down, comp test, and nothing. So BIP drained out all the e85, took out the 1000cc injectors, and installed 550 inj along with 93 pump. BAM, the problem was gone. So both BIP and I got on the phone about the possible causes for this. I spoke to my local big mustang shop here in Atlanta who tunes fox bodys and cobras on E85 all the time. All I said is,"what are your thoughts about E85," and he hit the nail on the head. He said it is great for tuning, and makes copious amounts of power, but if you let the car sit for an extended period of time, they are seeing injectors seize up, and corrosion starting to occur. Fuel pumps are also taking a beating for the corrosion effects of the alcohol.

BIP has an engine builder there that has a vast amount of knowledge and big into the Subaru scene. The shop he came from builds high HP Subaru's, and they too love the E85, but they have also started to see corrosion and problems arising with the cheaper injectors. The tune will just start to break up from the corn, and this is due to failing injectors after sitting. That hit the nail on the head in my situation, as my car sat for a month after I got back from Timmayfest due to E85 not been produced. Given we changed absolutely nothing on the car from Columbus, the problem came up out of now where.

I am not going to say what style, model or make injectors I am using, but I am sending them back to get tested. It looks like I have three options here, go back to pump gas, drive the car regularly on E85 using the same injector, or go with a much more expensive injector that is more fail safe. As of right now I am not giving up on E85, as the car runs extremely hard when well.

 

Glad to hear Craig....I kinda felt how you did in your earlier post on throwing the keys away in the lake. I was going to post about the same thing but hey you got it solved so that is awesome!

 

So was it the corn and/or the 1000cc injectors. Either way glad to see the car is back up with no more issues.

 

My crapdroid phone crapped out on me before finishing my post

I updated the above post.

 

WOW, I know methanol attracts water and eats certain sealing material, but 1 month!!!

Heck, I used it for years back in the 80's as a cheap octane booster, but NEVER more than 10%

Good luck!!

 

Good to hear you found the problem and have a solution. Also, glad to hear you are sticking it out on the E55!!!!

 

At most, I have run 3 full tanks of E85 through the car since I switched over from pump gas. Not much at all, but that has been over a period of several months, so it has been sitting for a while here and there.

 

Glad to hear you got it figured out.