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How did you narrow it down to gas quality? I've wondered if my gas just sucks around here and if that's part of my problem. Even with 93.

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Discussion starter · #82 ·
Basically Mike reviewed my Dyno logs as well as some logs from pulls on the street. The OAR, KR and timing changes are pointing toward a 94 rated gas (Chevron) that is closer to 90-91.

He's sent me a revision that is really more for 91 and I'll log some more to confirm.

I've been spending a few hours over the last couple of days researching. Poor quality gas seems to be a running theme in this area (when you're looking for 92+). Probably have to leave it at a 91 tune in the end. I do know of a high volume station that does 94, so will give that a shot as a last ditch effort.

In the end though, probably better to tune for 91 anyway. If this ends up being the case, I will swap to Shell as I have had consistent results with them in the past. I did a lot of datalogging with shell 91 and my procharged 5.4.

We'll keep plugging away as this is relevant info for when the GT's go on.
 
Discussion starter · #84 ·
I'm still learning as I thought my OAR was OK too. It held steady at -.58. Apparently though, It's just one factor.

Not entirely sure if Mike's tune has to be "looked at" differently than if I was on the stock tune when it comes to OAR.
 
Discussion starter · #85 · (Edited)
Not sure if this helps. But this is part of a log I did last night. 0-80mph run. Just floored it, no brake boosting or anything.

Fuel Chevron 94 (ethanol free)
Green line is Spark Advance (lowest point is -.5 highest is +16 [once I hit it])
Red is knock (lowest point is -2.5 and highest is 5.5)
Bright Green is OAR. Hold @ -.58 and jumps to -.39 at the end of the pull.



Same 0-80 pull, same spot, same ambient temp. Only change is a revision from MPT (pulled some timing) and a different brand of fuel (Shell 91 vs Chevron 94 in the top graph). You can see a big improvement in knock (both graphs start at zero on the left) and timing improvement reflects.

Fuel Shell 91 (ethanol free)
Spark Advance (lowest Point -1.0 and highest +17)
Knock (lowest is -6.0 and highest is +.25)
OAR solid @ -.58



Next comparison will be by ONLY installing the Full Race FMIC. I would then like to test a fuel with 10% Ethanol and compare.

Stay tuned...
 
Mine holds at -.96. On the unleashed tune it's all over the place though. Up and down like a roller coaster. He's not even running any timing advance over stock.

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Discussion starter · #88 ·
I've been doing more datalogging over the past few days and it is pretty obvious that the Factory CAC is really not up to the task. I blame the factory plugging on the side of the core that limits the amount of air flow. Even cruising along with the slightest bit of load at 60mph and the IAT2 is 30* above ambient. It will easily hit 60* above ambient on a 0-80 run.

I really hope to see my Full Race CAC by Friday of this week. I'll put it in right away to see if it will help before I put in the Turbo's. Even after a couple of revisions with Mike, a lot of HP is being left on the table because the air charge isn't as cool as it could be.
 
Discussion starter · #89 · (Edited)
Intercooler is in the mail! According to Nick and the tracking info, I should have it by Wednesday! So stoked to get it.

I'm going to edit the above post as well to be able to compare after a revision from Mike (post #85). I just can't get decent gas around here to allow for 93 octane timing.

Progress, but slow...;)
 
Discussion starter · #91 ·
Intercooler arrived today as scheduled. I honestly thought I would have to wait until at least tomorrow.

Showed up at my door 1:30, installed and the truck was running by 3:30. Pretty straight forward, probably should have read the instructions as I have a tiny screw left over in the parts, but think it may be for the eBOV elbow. The only real pain was the supplied vacuum line for the BOV was too small for the fitting on the intake. I had to rig up an adapter using some fuel line parts I had. I'll be getting a proper adapter and line tomorrow.

I know it's been mentioned many times before, but they don't mess around with the packing!



Awesomeness



It's hard to see, but I do have a "corked up" OEM CAC. Really too bad, but whatever it's out now.




Thanks to Chris H, I also installed a Tial BOV.


I'll hopefully do some datalogging in the next couple of days to compare IAT2 temps.

I also put in a AEM dry drop in filter.
 
Intercooler arrived today as scheduled. I honestly thought I would have to wait until at least tomorrow.

Showed up at my door 1:30, installed and the truck was running by 3:30. Pretty straight forward, probably should have read the instructions as I have a tiny screw left over in the parts, but think it may be for the eBOV elbow. The only real pain was the supplied vacuum line for the BOV was too small for the fitting on the intake. I had to rig up an adapter using some fuel line parts I had. I'll be getting a proper adapter and line tomorrow.

I know it's been mentioned many times before, but they don't mess around with the packing!



Awesomeness



It's hard to see, but I do have a "corked up" OEM CAC. Really too bad, but whatever it's out now.




Thanks to Chris H, I also installed a Tial BOV.


I'll hopefully do some datalogging in the next couple of days to compare IAT2 temps.

I also put in a AEM dry drop in filter.
That looks puurdy
 
Discussion starter · #94 ·
Tiny screw is to plug factory weep hole. Ha.ha.
Ha, I have no idea what it's for. Not mentioned in the instructions. It's small, like a #4 Machine screw with a Allen head and a flat washer.

Just to satisfy the curiosity, I'll post a pic and maybe someone knows. I could also ask FR, but that would be too easy...:p
 
Ha, I have no idea what it's for. Not mentioned in the instructions. It's small, like a #4 Machine screw with a Allen head and a flat washer.

Just to satisfy the curiosity, I'll post a pic and maybe someone knows. I could also ask FR, but that would be too easy...:p
Sensor on the charge pipe [emoji51]
 
Discussion starter · #98 ·
You know I was kidding about weep hole but I just couldn't resist. How bad did your OEM cac look inside? No catch can yet right?
lol, I know.

OEM CAC was pretty clean and I was actually surprised. I set it up on it's end to see how much oil would pool in it and it was very little. maybe enough to fill up a 1/3rd of a shot glass. Truck has 35k miles on it now.

I haven't installed a catch can yet, but do plan on it in the future.
 
Discussion starter · #99 ·
Still have to get a pic of the screw. Not sure where I put it.

Went and did some logging tonight. I'll post up a comparison tomorrow, but WOW what a difference in intake temps. I thought it would make a difference, but not be within 15* of ambient at the end of a 0-80mph run!
 
Discussion starter · #100 · (Edited)
A comparison between the OEM CAC and the FR CAC.

0-80mph runs. Same everything except the I swapped out the CAC. Same temps, same road, same tank of gas, same tune, blah, blah, blah.

OEM IAT2 temp


Full Race CAC IAT2 temp


The orange line is speed.

Logs sent to Mike, I am off on a business trip all this upcoming week so not much will be happening.
 
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