Pulling KR timing on WOT

[biggmac4]

2013 supercharged RT, 392

The log seems to be pulling timing on WOT even when the knock sensors aren't showing high voltage. We're seeing about 5psi max at 6k rpm on a fully forged 392 stroker 9:8:1 compression. Is there some kind of setting that's doing this since the car use to be 5.7 and now has more power? The car runs great It just won't take timing up top. AFR 11:5. The tune attached I removed a bunch of timing just to see what would happen and it still pulled some.

[TaylorJ]

Not to be a total C.U.N.Tuesday type of chick, but did you pay for this tune ? the tune it's self is the issue , it's fighting it's self
also it's almost 10 to 1 , what heads ? eagle ? What Fuel ?
Engine Size is still 5.7, should up it to 6.4, you're no moving 6.4 liters of air through it.

[biggmac4]

Were would it be fighting itself? Yes 392 in 5.7 block , 110 race fuel eagle heads .

[biggmac4]

I didn’t think changing the engine size did anything. What does it do exactly?. Will it rescale things if I change it to 6.4?

[SiriusC1024]

If you change to the correct displacement that will make the aircharge axis of the spark tables correct.

[biggmac4]

Engine size or displacement? or Both? On displacement it says " Setting this value to anything other than the stock value will disable ESP/TC. ". If I just change engine size, I don't see any scales changed.

[rays04gtx]

Engine size, , you won't see any scales change, but what does happen is the sub routines now understand why your using Air volume equivalent to larger displacement.

[biggmac4]

Wow that did the trick. I have plenty of adjustment now. Thanks

[PurpleRam]

Were would it be fighting itself? Yes 392 in 5.7 block , 110 race fuel eagle heads .

Simple things can trip these up , make sure all your rpm scales match, start point and end point. EX Table 36547 starts at 512 and ends at 5792 while your PT spark table starts 512 ends 6496 may sound odd and I get flack from some of the "pros" for saying this , but when all these tables have the same starting and ending reference points , these ECU's work better, less odd ball issues creep up.

[biggmac4]

What table? "EX Table 36547"

[LilSick]

think he means yer spark tables

4462x

Definitely need customer to anti up for a 180 T-stat , Ambient air is almost 100F, where are you located ? judging from the Baro reading you're about 500 above Sea level.

can't run this truck on 87 OCT now,

remember what i was saying about getting the temps down before trying to tune spark, fuel, cam, knock sensors, etc ???

^^^

if not yer gonna end up doing it twice

[rays04gtx]

What table? "EX Table 36547"

EX Table 36547 , EX = Example Table 36547 starts at 512 ends at 5792 .

Basically the idea is , no mater how you want to scale the RPM axis , its a good idea to make them all start the same and end the same, exception it WOT , you can start that in the mid teens but as long as the end point is the same as all the other the ECU done's hunt around for Values to use when it transition from table to table.

[LilSick]

those are cam tables

did you try those tunes i sent to determine the phasers limits yet?

[PurpleRam]

Cam tables count , idea is the more uniform the scales are the less likely the ecu is to pull some odd ball values when it has to make a decision between what we reprogram it to do and it’s base protocols.

[biggmac4]

I found issue testing last night. Knock Sensor 2 is reading high V. Willing to accept the consequences We disabled the knock sensors for some testing and the car ran great. No noticeable pinging. Ill look into getting that fixed. For those who are running forged blown cammed motors with headers around what Voltage on the knock sensors are you guys seeing?

[LilSick]

some will say 1.5v but there are too many variables


the engine is supercharged

the supercharger is centrifugal (more boost at higher rpm)

you disabled the vvt (cam is always at max advance)

___________________________________

if you add all that up the sum is cyl pressure




did you cc this engine?

if so what was the static compression ratio???????



*and which 100 octane fuel are you running?????

[PurpleRam]

I found issue testing last night. Knock Sensor 2 is reading high V. Willing to accept the consequences We disabled the knock sensors for some testing and the car ran great. No noticeable pinging. Ill look into getting that fixed. For those who are running forged blown cammed motors with headers around what Voltage on the knock sensors are you guys seeing?

1st question is which Alloy ? 2618 or 4032? 4032 pistons are quieter , looking at the Zeros log your Idle at 180F is quiet , hovers around .35+/-v so I'm guessing 4032s (I could be wrong)

I do tuning for a guy who has a Drag pak clone (and a real 2015 DP car) 354 ci all forged with 2618alloy pistons, car runs a 2015Hellcat ECU , at WOT it'll pull as much as 2.5-3.5v at 180f operating temp, at 165f operating temp (160F t-stat) it pulls 3.0-3.75v@ WOT . During warm up it's LOUD idling at 1.5-1.6v no matter the T-stat. once it gets to 180 it's around .65+/- .10v @160f it's .90+/- .15v

Looking at your log zeros your fine with a 2.5v min, I'm going to take the Tune you posted earlier in this thread and rework it , it'll be close to what you have but I'm going to change some things that I can't explain here and my dam Phone broke today so I can't do a Video like what I did for the Ram/VVT thread .

[PurpleRam]

I found issue testing last night. Knock Sensor 2 is reading high V. Willing to accept the consequences We disabled the knock sensors for some testing and the car ran great. No noticeable pinging. Ill look into getting that fixed. For those who are running forged blown cammed motors with headers around what Voltage on the knock sensors are you guys seeing?

Bank 2 is ALWAYS louder because it's the thrust side.

[PurpleRam]

Next set of logs you do , log the Accelerator Voltage and Throttle Voltage , the %'s are not as important , reason being, spark,Air flow,Fuel are all triggered by Voltage not percentage,

[biggmac4]

Bank 2 is ALWAYS louder because it's the thrust side.

Here is from today with some ramp up to see what it does.