Car can't be tune, and not making power. Reaching out to community for help
Typically the issue with WOT break up is plugs or plug gap. Should have no issues on OEM coils running a 0.024-0.026 gap, I never did.
However what is going on in your video isn't plugs, honestly appears tune related to me. Could be an issue with fueling also, I don't have the time to look though the logs at work but may try just putting the OEM Pump back in or another wally from a friends car to verify you didn't get a crap pump. Though you said the fuel pressure is fine, Im guessing that was only checked at idle and not during cruise.
The post under you first is BS though this isn't some common issue swapping to an aftermarket fuel pump.
Edit: Saw the post under yours was from Drop Dead Fred, yea nevermind anything that guy says. He thinks he knows the answer to life itself and it's spark plugs and fuel pressure. Weirdo
However what is going on in your video isn't plugs, honestly appears tune related to me. Could be an issue with fueling also, I don't have the time to look though the logs at work but may try just putting the OEM Pump back in or another wally from a friends car to verify you didn't get a crap pump. Though you said the fuel pressure is fine, Im guessing that was only checked at idle and not during cruise.
The post under you first is BS though this isn't some common issue swapping to an aftermarket fuel pump.
Edit: Saw the post under yours was from Drop Dead Fred, yea nevermind anything that guy says. He thinks he knows the answer to life itself and it's spark plugs and fuel pressure. Weirdo
Evolving Member
Joined: Dec 2016
Posts: 186
Likes: 11
From: Bethlehem, PA
I am running into similar problems as you, I'm currently checking the o2 sensors to make sure they are clean and checking the spark plugs and changing them. Ill be watching this because it seems what will fix you will fix me.
How often do you change plugs?
How often do you change plugs?
Evolved Member
Joined: Mar 2014
Posts: 816
Likes: 82
From: wisconsin
Well I looked at some more logs, have you tried turning off you fuel trims? (Open loop mode) I noticed in one of the logs it suddenly changes from -12.5 to zero fuel trim right around the problem area. Also it appears your Rpm reading is unstable sometimes, this may be due to the hesitation or it my be you camshaft position sensor is flaking out. I had to separate my coil power wires from the camshaft position sensor wires cuz under load it would cause rpm changes in my logs along with a misfire. Also make sure the shield wire is grounded going to the cam sensor.
It's a long shot but I hope it can help.
A few weeks ago, my car was having somewhat similar issues. Car suddenly went rich afr hitting 10 or below at wot, stuttering and knock light blinking all over the place.
Checked for boost leak, replaced new sparks, checked injectors... Still unable to fix the problem.
Gave up, brought it to RRE, and BAM they found the wiring to my knock sensor was bad. Fixed the wiring, and I have my car back running like champ again. So maybe you can check the knock sensor, and maybe O2 sensor.
A few weeks ago, my car was having somewhat similar issues. Car suddenly went rich afr hitting 10 or below at wot, stuttering and knock light blinking all over the place.
Checked for boost leak, replaced new sparks, checked injectors... Still unable to fix the problem.
Gave up, brought it to RRE, and BAM they found the wiring to my knock sensor was bad. Fixed the wiring, and I have my car back running like champ again. So maybe you can check the knock sensor, and maybe O2 sensor.
Evolved Member
Joined: Oct 2010
Posts: 870
Likes: 23
From: Streets of willow
Just wanted to add my experience with the initial mod you did.
"Tomei Poncam Type-R" [272s]
I have tuned 2 sets of these. Hopeless low end and mid range power, feels like your driving stock cams. Car feels dull till 5000 RPM.
"Tomei Poncam Type-R" [272s]
I have tuned 2 sets of these. Hopeless low end and mid range power, feels like your driving stock cams. Car feels dull till 5000 RPM.
glad to hear you swapped the seals out. Sorry I have been MIA since our last email. Work ramped up crazy and I was traveling.
Are you still running the the rom we tried out or back to the original?
btw, hope you used locktite on the butterfly plate screws.
Are you still running the the rom we tried out or back to the original?
btw, hope you used locktite on the butterfly plate screws.
Thread Starter
Evolving Member
Joined: Apr 2015
Posts: 240
Likes: 19
From: Cleveland
Was able to cruise with these guys, and keep up, so something must be working
Last edited by Welcome2GoodBur; Jul 24, 2018 at 04:21 PM.