What did you do today to your 3/S?

[Beef6]

So while covering a bit of work today (repairing and painting door, fixing some wiring issues and putting on my powder coated valve cover) I came across this...



Looks like the 60k is happening now. But I am lucky I came across it before it skipped teeth.

[CoopKill]

How the cover get like that?

[keo92stealth]

Yo that belt is about to slip!! And my covers look just like that!! Funk man!

[IPD]

The GTO runs wahoo bad ECU who would have thought lol


Sent from my iPad using Tapatalk

that sounded like rod knock, not lifter tick.

[Beef6]

How the cover get like that?

From the belt rubbing it I'm assuming

Yo that belt is about to slip!! And my covers look just like that!! Funk man!

Ya you could completely life the belt off of the cam gear, luckily we caught it before it completely slipped.

[keo92stealth]

From the belt rubbing it I'm assuming


Ya you could completely life the belt off of the cam gear, luckily we caught it before it completely slipped.

Probably a bad tensioner

[TurboSinceBirth]

I found the 720cc injectors I traded which got sent to the wrong address. I installed those, new plugs, new wires, new fuel filter, and it still ran the same as it did on the 1000s with the ARC-2. It misfires so bad I can't get into boost, it sounds like a semi-automatic when I give it any throttle, and no matter how much fuel I would throw at it nothing worked. I've already replaced pretty much all of the ignition and fuel components. I thought it might be bad gas so I drained about 7 gallons of E85 out, added 2.5 gallons of 91, and tried again. It ran much better but still misfired. It seemed like it was misfiring from being too lean. It did it when it was too rich also. I could sometimes find a happy medium but realistically I think the ARC-2 isn't capable of running E85 because it has a lack of fine tuning. It was either too lean or too rich and only part of the time the car would be "happy" and sound great. It's either that, the gas is bad I got, or maybe I still don't have good coils, PTU, etc.

After today's events I'm going to drain the tank, add 91 back in, and see what happens. I have a feeling the car is going to run just fine because all these issues starting popping up when I ran nothing but E85. I will revisit it again when I swap in a flashed ECU. I don't know maybe my FPR is bad or my new Aeromotive Stealth pump is bad. It almost seems like it doesn't get enough fuel WOT.

[JasonY]

Only problems I've had with the ARC2 is if one setting is off, it totally fucks the whole thing up. Does E85 need a different AFR vs gas or something?

Jason

[TurboSinceBirth]

Only problems I've had with the ARC2 is if one setting is off, it totally fucks the whole thing up. Does E85 need a different AFR vs gas or something?

Jason

Yeah it does. It doesn't have as wide of a window for the AFR I guess you could say. It had to idle and cruise almost in the 13/14s to not misfire. Low 10s was too rich and it would misfire. 11s it wasn't cleared up either. Around 12.5:1 WOT it seemed ok. I think with the bigger injectors I just couldn't dial it into the narrow window so the idle, cruising, WOT, and acceleration was all happy at once. Usually 2 out of the 4 would be ok.

I had no problems at all with 550s tuning E85 because the injectors were smaller and thus each click of the ARC-2 made finer adjustments. The only problem is I was out of fuel at 4k rpms. I didn't run into problems until I went with larger injectors on E85 so I'll try draining the tank and putting 91 in to see what it does which from the looks of things should run fine. I have a HKS DLI but it shouldn't be spark plug blowout. I'm not running 20+ psi. I may try swapping the fpr, fuel pump, coils, and PTU again just to see if it makes any changes. I've tuned the ARC-2 enough on different cars to know how to dial it in and even get the knobs where it isn't one setting off as long as I watch the wideband. I'm not completely sure what all is going on since I'm a little puzzled. I may try narrowing it down by installing the flashed ECU, doing a global correction to scale the injectors down, and then finish tuning the ARC-2 on E85. If it works like that where the ARC-2 sees the injectors as say 500cc instead of 720cc and the car runs fine I'll know that with the larger injectors and E85 it can't fine tune the AFR enough. I guess since it hadn't been tried I wanted to give it a shot before completely changing engine management setups.

I think I had the ARC-2 setup as LOW +3 MID -7 HIGH maxed out and ACCEL +3 with the 720s, ~8.5 gallons of E85, and 2.5 gallons of 91.

[keo92stealth]

Shit man I thought it would work. I just have to get me car running to really give ya my results bro . If it doesn't work for me then I have no choice but to swap in small injectors and run race gas which means the car won't be driven as much due to high gas prices hehe.