Ok this is pissing me off. With h2o inj 51 meth/ 49 h2o and 2 deg pulled timing. Cf=14.3....
03-12-2006, 11:10 PM
#1
Senior Member
Thread Starter
Join Date: Mar 2004
Posts: 5,877
Likes: 0
Received 0 Likes
on
0 Posts
Ok this is pissing me off. With h2o inj 51 meth/ 49 h2o and 2 deg pulled timing. Cf=14.3....
SRSLY wtf. The only thing that makes it better is pulling primary fuel out 2% or running toluene. I pressure tested the **** outta this bitch and there isn't a leak anywhere. I have new primary O2's, a new fuel filter, new 710n's, and new one range colder denso's. I'm getting high cf's on both banks so I think that rules out a posm problem and all cylinders are around 12.3 to 14.3 peak so I don't think it's a flakey coil pack. I am getting no DTC's. o2 voltages are in check. I'm pulling 260g/s through the maf. This is on 91 oct with an ams box. The water injection didn't change my cf's at all. Could it be a flakey fpr or a fuel pump? Why would pulling fuel make it better? My last log was with 2 deg timing pulled and my cf's are still sky high. Any ideas? This is making me mad.
Trending Topics
03-13-2006, 05:16 AM
#9
Hmmmmmm.....
Try making some uber meth with yellow heat, like a 75-25 mixture. At that point, you are actually raising your octain AND cooling your AIT's... Try some race fuel, too. See if that makes the c/f's drop.
If that doesn't help, get a wide band 02 sensor and see if you are running lean. You should be in the high 11's and possibly low 12's for you a/f ratio. Any higher than that and you are risking knock on pump fuel.
If none of that helps and you have a good a/f ratio, I would start looking at the knock sensors themselves.
If that doesn't help, get a wide band 02 sensor and see if you are running lean. You should be in the high 11's and possibly low 12's for you a/f ratio. Any higher than that and you are risking knock on pump fuel.
If none of that helps and you have a good a/f ratio, I would start looking at the knock sensors themselves.
