Well... We’re pretty much stuck at the moment. The only thing left that we can do with the GT350 is send the injectors off to get flow tested before pulling the engine for further diagnosing. Hopefully we find something soon! 🤞 Have you gotten your entries in to win the FRS? Head to www.dls.store right now and every $1 spent is 1 entry in to win! Also you might want to set a reminder for next Wednesday's upload and turn notifications on, something cool is coming 🤫
That car should start up better than that something is not right check the plugs they always tell you something, then check the simple things first
Bad ground in the wiring harness. Only occurs in the engine harmonics at certain rpm.
If you have a knock sensor i would turn it off. It could be a harmonic issue.
Direct wire the pumps and if you have a Hobbs switch bypass it. Might fix it
im 2 months late but maybe a boosta pump issue?
What's the name of the spoiler that he has?
Always get to work on the cars but never enjoy them😂😭
Clean the injectors
A lot late on the video lol but maybe fuel filter? Don’t know if you guys have fixed the issue?
He said on Twitter that they might have found the issue. That was today.
can’t wait for lucifer to get back out there. one day at a time!!!
Pos !!! Put it in a giveaway. 😆
I would try putting a different ecu into it
Your guys lethal performance discount code isn’t working anymore
Shiiit hit up the guys from street outlaws lol.
Yes the breakup was happening to my foxbody at abt 3k what we did was some timing spark plugs and plug wires and it works now
is the timing right
Check the output shaft speed sensor/output shaft flange nut. There is a TSB stating the nut could be loose allowing the output shaft tone ring to move in relation to the output shaft causing an erroneous signal. It could be just at the particular RPM range? It sounds like a misfire too me - Almost like spark blowout. How tight is the gap on the plugs?
Understand through out some ideas here just because I had breaking up issues with my Jeep and it ended up being the ground that went from the head to the firewall you've already checked everything else that I would have checked. Is it possible that it could be a throttle body issue?
I don’t think this is the problem, but could it be the fuel rail. Maybe it restricting flow to injectors or the injectors are pulling hard and cause the far injector to have a inconsistent fueling to back pistons.
How that fuel filter lookin🥴
If the Injector balance test goes good it has to be weak spark due to the new tune or possibly the fuel volume through the inlet from pump. If it’s the same company/tuner then it might have reached that bottle neck in the system. Maybe the valves are mistimed/floating or the tune is not set up for the ms of delay needed in increase of rpm.
Could it possibly be the cam lockout reading different on the tune until 6k? If the engine is dripping off like that seems like a mechanical issue if before hand the afr is steady until that rpm. Just a question I figured I ask. Maybe the chains are stretching a degree or two or the tuning is set up with non-optimal degrees of timing after that rpm.
Never messed with high horse power cars, but couldnt be a vaccum leak caused by crank pressure? Which is why your only seeing it at certain rpm ranges
Take it to midnight
Send your shit to Houston to get worked on the right way and get a car built that actually works for more than a week. Smh
Sounds like a bad ground or faulty injector/injector related
maybe its the mechanic lol seems everything he owns blows right after being fixed, always fixing not enough driving.
You build these cars half ass you say drag car you dragged raced like 2 times can’t stand this channel anymore it’s all about having supper nice highend stuff and you don’t help build shit you sit there
Anyone remember where Gavin got the euro taillight for the gt350 ?
Change the coil packs
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Gavin. I ve always felt like your into could have one small change. Instead of being hit at 28 seconds. Doing a launch control pull and filming the reaction would go perfectly with the music.
You own it ofcourse its gonna have some issues!
Could your fuel the pulsating in the rail to cause it I know they make fuel dampers for that
Maybe it's a bad v-tech solenoid
Could be something with the turbo compressor approaching the surge line momentarily. Maybe ramping up boost a bit differently would cure it? MAF volume may be something to watch over boost pressure.
Not to hate but I stopped watching months ago because cars never worked, figured I'd check in. Cars not working,bro..
Maybe ckp sensor? My Silverado would do the same
Sooooooooo when’s Lucifer gettin that Corsa Exhaust??? 👀👀👀👀👀👀
LS swap it
Could the fuel be pulsing in the fuel rail? I mean you are throwing a lot a fuel in to it fast.
Bud, Stang mode has been having problems with his 2020 Shelby but see the comments on this episode of yours. I've seen the comments and there saying it's a electrical issue, as far as ground. But please get with Stang mode, make a episode where your both channels come together. But look at the comments, there REALLY TRYING to help you. God bless you and hope more episodes to come. From me: hope you get that new 2020 Shelby and convert it to a manual 😁
A drop in fuel pressure would indicate a flow issue to the injectors, a weird varience to AFR from a external working wideband indicates a fuel supply issue, if there isn't a surge in boost or a reduction in boost at the RPM range, then that won't be affecting AFR's. If we move up the line you could have a valve issue, either not letting enough fuel, or letting too much fuel in, but considering its a new engine and that would display as different issues too. At a certain RPM more voltage is required to allow spark plugs, injectors etc to fire, so what could be happening is your ground to power might not be 1:1, and there could be too much or too little resistance at that point thats causing the electronics to not be able to do what it's supposed to do. I would recommend to check all ground wires, battery terminals, check all injector and fuel pump wiring for continuity to rule out whether those are faulty, however what I recommend to everyone when I speak to them about engine works and electronic stuff is to when you've made massive changes, like more electronics etc, is to increase the gauage of the wiring used on both the power and ground wires. Its a tedious job, but considering the change in the tune did nothing and its happening now, I would suggest you might have some burnt out wires, either on the injector, fuel pump wiring side, could also be wiring to the coil packs. I believe strongly its a WIRING and ELECTRICAL issue rather than a mechanical issue. RPM based usually indicates an electrical problem due to interference in the wiring circuit.
Better yet if you just did spark plugs check the pig tails make sure they ground or signal wire on 1 or more has not pushed out. Sorry for double comments
Yea that sound like your injectors are hitting max duty cylce. But they realistically have some trash. If not i would check valves. See if they are leaking by bad enough that can't hold pressure at that rpm range. Or your coil pack harness is losing ground from ecu/ cam sync at that rpm range. Lol
Notice the flags on the back wall at 3:24 after the car revs all the way
Could some timing be off with the valves where they are staying open for a hair longer than they should ?, idk just throwing a thought out there
My buddy had the same thing going on with his sti high rpm little stutters. Turn out it was his pump relays. They would spark out high rpms and lean it out and would keep the same boost. But who knows. I would look at coil packs.
Spark blow out, when the fuel not egnites it wont show lean on afr it Will show rich had the same problem om One of My cars i built, try to make sparkgap smaller
Get entered to win the new giveaway car lmao
Thank you for making this video you have made my day. Yesterday i was going to a car meet but i couldn't make it and im still a lil bit sad-mad. but seeing you push thru problems is giving me corage and i just wanna thank you. Hope you fix it.
2000 hp Chevy ??
Maybe you should try buying an ob2 scanner to see the problem, like "blue driver", Chrisfix has a tutor vid about it though. PS: hope my suggestion makes things better.
Nice video, but where's jess
How do you wash your cars that are wrapped?
You might have blown a head gasket.. I have a dirt track car that did the same thing it would run great until you hit a higher rpm & would pop and sputter.
I am wondering if this car came from a state with specific performance car cutooffs, AKA the tattletale box they had on Vettes that logs RPM, torque and speed loggin it and flashing it to a file... They may have a auto engine ignition cutoff set on performance cars to disable the engine when it hits a specific set RPM in this case at 6,000 RPM its disabling or distorting the signal to the coil
that name will always give you trouble in the end.
Seems like a crank sensor issue/ cam sensor issue to me. The way it cranks sounds odd and like its taking longer than expected trying to find out where everything is. I've seen a couple cars with bad cps run fine till high rpm when the gap between the sensor and the reluctor become too far apart and the vibrations cause it to rattle and not pick up the signal as good. Lund should be able to see this in the log file. If nothing else i would try changing crank and cam sensors and see if the issue persists.
Ok. Theory time! Have y’all checked the timing belt? It’s a shot in the dark but still.
Why does it sound like someone made a timing change when you're trying to start it?
Can y'all get a Mopar next
Is anyone else around the states having a gas shortage w regular gas and unleaded 15
Could it be the fuel rails. I can’t remember if those were upgraded and it could be the third pump creating a weird flow pattern that affects it for a split second.
Wow that sucks! Hope you figure it out soon.
If it’s not fuel and it’s not spark then maybe airflow
Maybe the throttle body? Could be dirty or malfunctioning.
Maybe just maybe, vibrations causes your throttle body to act funny or maybe check all the grounding points while doing a pull...
My car did the same thing when my o2 sensor went out
Wtf? 15:35 THE DOOR
Guys please replace the crank agle sensor. I had this issue in the past
Coils or dwell
Possibly a bad ECU but who's to say
Did you sell your mustang
It’s cursed with a name like that. You should give it away to me and you won’t have anymore issues with the car 😬
Are you pushing enough fuel but the injectors aren’t able to push enough fuel out
The problem with Lucifer is it's a mustang
cant you guys race that old man white the hellcat against lucifer
needs an ecu box, not a huge deal, some just dont like high power input while being vibrated. Literally buy one from a wrecker and reprogram it will solve all your issues, $300 4 bolts 2 plugs
Maybe the pumps can’t keep up or the regulator has a damaged diaframe .. maybe try pushing up the pressure. Bigger injectors?
Might wana make the plug gaps abit tighter or try a different type of plug? Just thinking out loud...
So what is it’s your fuel pump cutting on and off really fast making it choppy on the Dino or something cutting fuel on and off hope it helps
Is it me... or has anyone been here since the tornado video, where it destroyed his entire city, college campus, and more.. The real ones / fans will like this comment.
if it not a compresion prob then its probly a sensor prob but change ur fule filter set a better ground on each pump and run sum ethanol should solve th issue i cant see any other prob lemme no if it works take off ur calleted converter its nothing but trouble for performance
Check the fuel see if it’s actually e85 or if it’s lower
Gavins luck Chevy-Breaks immediately Ford-Works on them and makes them the best cars ever but cant Make Them Run Right
ITS THE TRANSMISSION PROLLY CHECK IT
connect a voltage meter to a cig lighter or through obd while you run it
Try new spark plugs and new injectors
Gavin this car is having the same problems starting like the black car
Try checking all your fuel lines
Stupid question... have you checked other cars on the dyno recently? Could be that the dyno is messed up
Check grounds and watch for a drop in volts. 6k seems to be where the 3rd pump kicks on. Fuel pressure seemed normal but those gauges are slow to respond to small dips.
Hey i ordered a jacket and got sent the wrong size
Why does that thing seem to start terrible. Injectors is a good place to start.
Lol, ya'll never know why... Stay to stock cars & leave the modified shit to guys who don't wear skinny jeans.