This is a weird question that needs to addressing. PL file attached.
Was out driving the car last weekend and had a few things happen that are totally weird and a little confusing. Lets start with #4 listed below. The PL is showing that my injectors are almost or are maxed out. Here is what I am wondering about the duty cycle. At 94% duty cycle my injector pulse width is 19.91%. My car is an E85 car with 80lb injectors. I have my boost controller set to around 16-17lbs boost. My turbo\car is capable of making another 10-12 lbs boost and another 700-1000 rpms on my tune. If the injector pulse width is at 94% on 80lb injectors and E85, am I maxed out? Or is there a 20% increase on the duty cycle as the increase in the injectors as gas vs. E85? My thinking is that the injector harness is wiring is to small and not capable to provide enough voltage to injectors. I have ordered Carper’s high-output injector harness to see if this fixes the issue. What is everyone’s take on this?
Here is my second question. As you can see from the frames that I have listed below, there was no more than 1.5 degrees of knock. That is only 1% of the PL log showing knock; the other 99% there was no knock registered. But what I have an issue with is that in the frames listed below, my Casper’s LED knock detector and audible knock detector would spike. Now if you look at the log file, you will not see any of that. So can are the knock gauges correct or the PL in registering knock? I would like to say the PL is the correct reading. Something else that I am wondering is if that I am getting a voltage spike of a signal feedback through the ground of from my volt booster. I have the knock gauges powered of a mini fuse panel, sold by GNS performance. Now I have my main ground running to a junction box on my firewall that is feed by a 4 gauge wire from the block to the negative battery post. I am thinking that I am getting a voltage spike at WOT setting off the Casper knock gauges. I have Casper’s volt booster, which I am starting to think is the culprit.
1. 1. Frame# 12854 of 14904: From foot brake: 3737 RPM, 6.8# BOOST, 20.1 degree timing, A\F of 10.04, and 0 knock
2. 2. Frame# 12865 of 14904: At WOT: 5585 RPM, 17# BOOST, 20.2 degree timing, A\F 10.58, and 0 knock
F 3. Frame# 12889 of 14904: At WOT: 5649 rpm, 16.7# BOOST, 20.2degree timing, A\F 10.68, 0.5 knock, and injector duty cycle of 94%
4. 4,. Off throttle boost at frames# 12870, 12898, 12943: where I let of the gas do to break the tire loose.
5.
5. Knock Retard frame# 2257: The only noticeable knock. This is where I kick done from 4th to 3rd at WOT.
Was out driving the car last weekend and had a few things happen that are totally weird and a little confusing. Lets start with #4 listed below. The PL is showing that my injectors are almost or are maxed out. Here is what I am wondering about the duty cycle. At 94% duty cycle my injector pulse width is 19.91%. My car is an E85 car with 80lb injectors. I have my boost controller set to around 16-17lbs boost. My turbo\car is capable of making another 10-12 lbs boost and another 700-1000 rpms on my tune. If the injector pulse width is at 94% on 80lb injectors and E85, am I maxed out? Or is there a 20% increase on the duty cycle as the increase in the injectors as gas vs. E85? My thinking is that the injector harness is wiring is to small and not capable to provide enough voltage to injectors. I have ordered Carper’s high-output injector harness to see if this fixes the issue. What is everyone’s take on this?
Here is my second question. As you can see from the frames that I have listed below, there was no more than 1.5 degrees of knock. That is only 1% of the PL log showing knock; the other 99% there was no knock registered. But what I have an issue with is that in the frames listed below, my Casper’s LED knock detector and audible knock detector would spike. Now if you look at the log file, you will not see any of that. So can are the knock gauges correct or the PL in registering knock? I would like to say the PL is the correct reading. Something else that I am wondering is if that I am getting a voltage spike of a signal feedback through the ground of from my volt booster. I have the knock gauges powered of a mini fuse panel, sold by GNS performance. Now I have my main ground running to a junction box on my firewall that is feed by a 4 gauge wire from the block to the negative battery post. I am thinking that I am getting a voltage spike at WOT setting off the Casper knock gauges. I have Casper’s volt booster, which I am starting to think is the culprit.
1. 1. Frame# 12854 of 14904: From foot brake: 3737 RPM, 6.8# BOOST, 20.1 degree timing, A\F of 10.04, and 0 knock
2. 2. Frame# 12865 of 14904: At WOT: 5585 RPM, 17# BOOST, 20.2 degree timing, A\F 10.58, and 0 knock
F 3. Frame# 12889 of 14904: At WOT: 5649 rpm, 16.7# BOOST, 20.2degree timing, A\F 10.68, 0.5 knock, and injector duty cycle of 94%
4. 4,. Off throttle boost at frames# 12870, 12898, 12943: where I let of the gas do to break the tire loose.
5.
5. Knock Retard frame# 2257: The only noticeable knock. This is where I kick done from 4th to 3rd at WOT.