Edkiefer
Well-Known Member
What's AGS ?With the stock tune the coolant / oil temps do hover on the mid-high side! With the AGS deactivated the temps are more in check.
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What's AGS ?With the stock tune the coolant / oil temps do hover on the mid-high side! With the AGS deactivated the temps are more in check.
Ahhh was not aware of that.A blown motor, on the FP tune, was just posted on FB with pics. It had the tune and an intercooler and was just installed two days prior to popping. It took out Cylinder #2 and had a code for a Cyl. 2 misfire. What's interesting is that it bent the rod and it didn't snap. This now makes (2) cases that I've seen with bent rods. That can sometimes save the block but his cracked the piston and did a good bit of damage to it, so the entire motor is being replaced by Ford under warranty.
He talks like this was the only tune that's been installed along with the intercooler. He said it was on the car for a couple of days before it crapped out. Fortunately though, Ford is warranting it, so there is a way to have your cake and eat it too. LolAhhh was not aware of that.
Did they happen to say if their was a different tune prior to this one or was it always stock before the tune?
#1 and #2 show the most knock count, #3 trails those cylinders slightly, and #4 never does get any knock count. Could be that fuel is fed starting at the rear cylinder. The center cylinders will get the most heat as there siamese to the rear and front cylinders, where as #1 and #4 should have better cooling with more water around the cylinder. I would assume that the two cylinders that would have issues would be #2 and #3. It all has to do with knock count, the cylinder that knocks the most is the one that's gonna have a problem, hence why #4 never has any issues. This is just my observation on my own car, other cars could be different. Always over octane people, and dont ask your tuner for to much low engine speed TQ.I have yet to see a rod let go on #4, and #1 appears to be cracked pistons. It is probably safe to say that is not random and that there is something about #2 and especially #3 that is contributing to these failures.
Since there should not be any difference between #4 rod/piston and #3 rod/piston material, manufacturing, or defect, it appears highly unlikely that a defect, manufacturing, or material would never occur on #4.
It may be that #2/#3 are more prone to LSPI like events under certain conditions, and/or the weakest link because of the design (balance shaft gear).
What does that translate into in degF?With the stock tune the coolant / oil temps do hover on the mid-high side! With the AGS deactivated the temps are more in check.
I agree, I think its cooling issue, but also looking at were the knock sensors are located.#1 and #2 show the most knock count, #3 trails those cylinders slightly, and #4 never does get any knock count. Could be that fuel is fed starting at the rear cylinder. The center cylinders will get the most heat as there siamese to the rear and front cylinders, where as #1 and #4 should have better cooling with more water around the cylinder. I would assume that the two cylinders that would have issues would be #2 and #3. It all has to do with knock count, the cylinder that knocks the most is the one that's gonna have a problem, hence why #4 never has any issues. This is just my observation on my own car, other cars could be different. Always over octane people, and dont ask your tuner for to much low engine speed TQ.
I agree, I think its cooling issue, but also looking at were the knock sensors are located.
#1 between 1st and 2snd cylinders and #2 by 4th cylinder, so #3 doesn't have one right by it.
Not that you want to rely on knock sensor for timing retard as there always a delay (it has to knock first).