cool reason i am asking i am on the stock fuel pump and injectors. all i got on my car is a 3"TBE. i am running 25 psi tapering to 23 at redline.

my IDC at redline is 100%, i dont think thats normal(i always thought the injectors could push more)! also i dont like IDCs above 90% what do you think?

 

I don't really want to be over the 90ish range either. I will be ordering some 1200cc injectors soon and hopefully converting to e85 when they open up a few more stations here.

 

1200cc??? damn!!!

i am going with 680s or 750s lol...

 

Did you check you plugs? If the car is breaking up you may have fouled out the plugs. Or you may have to adjust the gap a little. It sounds like you have a miss fire issue.

 

Would that explain the issues with the AF ratio?

 

You need a lot more fuel if you are running e85.

 

oh ok on the e85.

i told you to check ur spark plugs and it will give that problem, especially if you were lean or extremely rich for sometime.

change over to one step colder and gap properly there is a post on the gaps for different spark plugs.

 

I just saw that you said to try that. It isn't knocking anymore, but it makes sense about the fouling. I will throw those in tomorrow and see if that changes anything.

 

The plugs actually don't look too bad. There is some carbon build-up but it is not terrible. They are all gapped at about .022. I am really just trying to figure out this erratic AFR range before going back out to really tune the car.

 

And, here is a map.

 

i would change the plugs since you got em out and go a step colder as i suggested, i got to do the same.

can you pull a log? make sure to get external AFR, AFR map and timing, load, engine rpm, TPS and post it up!

 

change your spark plugs and gap it to .02 since you are in high boost. if your afr is inconsistent you may want to check if you disabled lean spool.

 

I did not disable lean spool. I just gapped the new plugs to .22 but will change it to .20. I stayed with the stock 7's for now until I can order the colder Denso's. No one in my area carried them.

rolly1818 - the last log I posted is the last time I drove the car. I was trying to get this figured out before doing WOT pulls incase something was jacked.

 

mac214, can you post the log in graph form or post up the actual file. somehow its easier to understand

 

Well, I took out the fuel pump and put everything back, which was exactly the way that I had it before and changed the plugs. Now everything is back to the way it was before, except I need to tune the car and order injectors since my IDC's are still too high. Car pulled great all the way through redline so I am suspecting it was definitely the injectors.

Here is raw data:


Here is a graph: