help a newbie out! 6.1 Hemi cam tune

[GrampsSRT8]

I have a 06 CSRT and i lost cylinder 8 lifter, after rebuilding the top end with all new goodies and a new cam (BES HHP Stage 2R) I bought HP Tuners and was attempting to tune myself. it starts up fine idles a little rough still and drives decent under 4k, i have not been able to bring myself to attempt WOT tuning yet without someone doublechecking my work. can someone check out my logs and tune and help a man out?06 CSRT8 PT VE.hpt ride to crumbl.hpl

[LilSick]

first you gotta fix your PE table

then, for the first pull i would zero the spark t stat

you can leave the 15 deg for the higher rpms but ramp timing in slower

15 might be a lil much at the lower rpm

these motors do not like timing

2488 rpm might be too soon

start conservative and slowly add timing if the wot fueling is at .82-.84 lambda

when it stops producing more power (or quicker ET) stop and back up one step

you do not want to give it more than it wants - will only cause problems

[LilSick]

i have never seen that approach to tuning (.0800 stoich and zero PE)

have no idea what it will do at WOT like it is

[GrampsSRT8]

first you gotta fix your PE table

then, for the first pull i would zero the spark t stat

you can leave the 15 deg for the higher rpms but ramp timing in slower

15 might be a lil much at the lower rpm

these motors do not like timing

2488 rpm might be too soon

start conservative and slowly add timing if the wot fueling is at .82-.84 lambda

when it stops producing more power (or quicker ET) stop and back up one step

you do not want to give it more than it wants - will only cause problems

ok, so the PE table, can you explain what i am doing wrong? i am following instruction from The Tuning School materials. and the .080 fuel/air ratio is supposed to be the equivalent to somewhere in the realm of 12:1 air/fuel. at least again, thats what The Tuning School material says.

do you happen to have a timing table on hand i can try to start with instead of the mess i have apparently? i apologize if this all sounds dumb but im trying to learn and this isnt the first time the materials i have seemed to lead me astray.

[JohnnyFW]

You got it wrong gasoline is 14.7 Stoich = to 0.068, if you want it to run a little rich use something like 14.1 = to 0.071, add the rest PE (power enrichment) to complete 12.1 = to 0.0825, so you have 0.071 in Stoichiometry, 0.0825-0.071=0.0115, so you put 0.0115 in the PE table i would use 0.0135 in the PE table, ones you dial in the VE tables you can start to play with timing an lean it out a bit

[GrampsSRT8]

first you gotta fix your PE table

then, for the first pull i would zero the spark t stat

you can leave the 15 deg for the higher rpms but ramp timing in slower

15 might be a lil much at the lower rpm

these motors do not like timing

2488 rpm might be too soon

start conservative and slowly add timing if the wot fueling is at .82-.84 lambda

when it stops producing more power (or quicker ET) stop and back up one step

you do not want to give it more than it wants - will only cause problems

also, after sitting down and going over my tune file i can not seem to find Spark T-Stat, am i missing something? does it go by another name?

[LilSick]

do you happen to have a timing table on hand i can try to start with instead of the mess i have apparently? i apologize if this all sounds dumb but im trying to learn and this isnt the first time the materials i have seemed to lead me astray.

email me your number so we can connect

if you want my help

[PurpleRam]

so What's up with Picture C ? 376F for the Rear Enable ? did you do that ? did it help it Idle ? .
Also Why Change Spark from VSS to RPM ?


Attached is a tune that should work fine, the 08SRT6.1 Magnum that the tune was written for runs out of Myerstown PA(Petty Blue repaint)

Do your self a favor and Log
Knock voltage Bank
Accelerator Pedal Voltage
Throttle Pedal
Total Air flow
Power train torque request.

Looking at the tune , your Injectors are still stock Pulse Width , that Cam HHP sells as their stage two is close Comp cams HRT stage 2 cams High .500 lift 220/230 At .050 , you'll need to adjust PW down the road to get max potential... right now it's hitting some 11.80 AFR when you get into the throttle which is keeping everything internally happy.

.0813 total is 12.3 AFR . so setting FA stoich tables to .0800 and running open loop keeps the AFR from going richer than 12.5 , doesn't set it at 12.5 , if you want to set AFR to maintain a constant AFR you need to set Table 44442 to a lower Limit to get the ECU to use the WOT PE table at all times , with the Table remaining stock as it is in the tune OP 1st posted, it'll keep the OEM 14.35 target at Idle and since his Throttle never gets up to the OEM setting of 3.19v it would never hit the PE table, once you get past the Idle RPM "area" it'll revert to the OEM algorithm for Fuel AFR.

I set your Stoich to .0696 and worked the PE table, and set to Table 44442 to 2.65V , that'll bring in the PE table when you get over 3/4(ish) Throttle. The OEM setting of 3.19v is almost full pedal on these NGCx ECUs Looking at the KR it's steady the whole time ,(see attached for how to set that chart in Chart vs Time) even tho you never get in to the throttle hard , with 46% Throttle and 16 degrees of time ,KR is solid , you can go up to 20degrees around 3k RPMS. the 6.1 I have in an 04 rumble bee project, I run 22@ 1800-3600, 24 from 3600-4400 ,back to 22 from 4400-4800, 24 from 4800-7500. with the same cam as what you have. I target 12.0 AFR in that truck. I attached the PE table form that Bee's tune.

And the Tuning school SUX for the NGCx ECUs.

[GrampsSRT8]

so What's up with Picture C ? 376F for the Rear Enable ? did you do that ? did it help it Idle ? .
Also Why Change Spark from VSS to RPM ?


Attached is a tune that should work fine, the 08SRT6.1 Magnum that the tune was written for runs out of Myerstown PA(Petty Blue repaint)

Do your self a favor and Log
Knock voltage Bank
Accelerator Pedal Voltage
Throttle Pedal
Total Air flow
Power train torque request.

Looking at the tune , your Injectors are still stock Pulse Width , that Cam HHP sells as their stage two is close Comp cams HRT stage 2 cams High .500 lift 220/230 At .050 , you'll need to adjust PW down the road to get max potential... right now it's hitting some 11.80 AFR when you get into the throttle which is keeping everything internally happy.

.0813 total is 12.3 AFR . so setting FA stoich tables to .0800 and running open loop keeps the AFR from going richer than 12.5 , doesn't set it at 12.5 , if you want to set AFR to maintain a constant AFR you need to set Table 44442 to a lower Limit to get the ECU to use the WOT PE table at all times , with the Table remaining stock as it is in the tune OP 1st posted, it'll keep the OEM 14.35 target at Idle and since his Throttle never gets up to the OEM setting of 3.19v it would never hit the PE table, once you get past the Idle RPM "area" it'll revert to the OEM algorithm for Fuel AFR.

I set your Stoich to .0696 and worked the PE table, and set to Table 44442 to 2.65V , that'll bring in the PE table when you get over 3/4(ish) Throttle. The OEM setting of 3.19v is almost full pedal on these NGCx ECUs Looking at the KR it's steady the whole time ,(see attached for how to set that chart in Chart vs Time) even tho you never get in to the throttle hard , with 46% Throttle and 16 degrees of time ,KR is solid , you can go up to 20degrees around 3k RPMS. the 6.1 I have in an 04 rumble bee project, I run 22@ 1800-3600, 24 from 3600-4400 ,back to 22 from 4400-4800, 24 from 4800-7500. with the same cam as what you have. I target 12.0 AFR in that truck. I attached the PE table form that Bee's tune.

And the Tuning school SUX for the NGCx ECUs.

DUDE!!! thank you! i will put this in and try it out later. i will look into what you were talking about above to try to educate myself properly. i can not thank you enough for the support. heres to hoping!

[GrampsSRT8]

so What's up with Picture C ? 376F for the Rear Enable ? did you do that ? did it help it Idle ? .
Also Why Change Spark from VSS to RPM ?


Attached is a tune that should work fine, the 08SRT6.1 Magnum that the tune was written for runs out of Myerstown PA(Petty Blue repaint)

Do your self a favor and Log
Knock voltage Bank
Accelerator Pedal Voltage
Throttle Pedal
Total Air flow
Power train torque request.

Looking at the tune , your Injectors are still stock Pulse Width , that Cam HHP sells as their stage two is close Comp cams HRT stage 2 cams High .500 lift 220/230 At .050 , you'll need to adjust PW down the road to get max potential... right now it's hitting some 11.80 AFR when you get into the throttle which is keeping everything internally happy.

.0813 total is 12.3 AFR . so setting FA stoich tables to .0800 and running open loop keeps the AFR from going richer than 12.5 , doesn't set it at 12.5 , if you want to set AFR to maintain a constant AFR you need to set Table 44442 to a lower Limit to get the ECU to use the WOT PE table at all times , with the Table remaining stock as it is in the tune OP 1st posted, it'll keep the OEM 14.35 target at Idle and since his Throttle never gets up to the OEM setting of 3.19v it would never hit the PE table, once you get past the Idle RPM "area" it'll revert to the OEM algorithm for Fuel AFR.

I set your Stoich to .0696 and worked the PE table, and set to Table 44442 to 2.65V , that'll bring in the PE table when you get over 3/4(ish) Throttle. The OEM setting of 3.19v is almost full pedal on these NGCx ECUs Looking at the KR it's steady the whole time ,(see attached for how to set that chart in Chart vs Time) even tho you never get in to the throttle hard , with 46% Throttle and 16 degrees of time ,KR is solid , you can go up to 20degrees around 3k RPMS. the 6.1 I have in an 04 rumble bee project, I run 22@ 1800-3600, 24 from 3600-4400 ,back to 22 from 4400-4800, 24 from 4800-7500. with the same cam as what you have. I target 12.0 AFR in that truck. I attached the PE table form that Bee's tune.

And the Tuning school SUX for the NGCx ECUs.

ok after sitting down and reading your response i got some answers for you.

-yes, i did change the ECT threshold for the Rear enable. this was what i was told to do by TTS to disable the rear O2 sensors, i currently have a wideband in the rear port of bank 2 so it would throw codes anyway if it was enabled. did it help my idle? im not sure

- where do you see Spark is VSS instead of RPM i must be blind ive looked for a solid 30 minutes trying to find this parameter?

- my VE tables i guess ill have to cruise around and re do if the PE tables were fixed. i have been wondering if my VE tables seemed low. i have seen others whee their tables seem to have higher values across the board. i am assuming its just a better tuning done to the VE while driving and collecting the STFTs and LTFTs

- thanks for the chart setup stuff. i will add those as well.