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Great info, thanks!

Based on my personal results and experience with the Comp needle bearing trunnion kit, I will never ever give Comp Cams any of my money again and refuse to run any of their hardware on anything until...

So yes I had the same exact thought and that is on the books to experiment with. First order of business was to fix the rocker arm issue, which is done. I also swapped in the OEM LS3 injectors so...

OEM rockers with CHE guts and ARP studs.

Peak piston velocity

I have listed and explained all the math in this video and it has a companion Excel spreadsheet you can download to see and play with the coefficients.
https://youtu.be/pZ7i9c0sCN8

Turns out I am an idiot...I installed the trunnion upside down. The flat chamfer for the nut was facing down.

Also that BTR kit...looks like they have an option for the M311 heads! Tempting...
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I used those specs to plug into this online cam calc. It will rough GUESS the .050" valve events. Again, I can't stress this enough, it is a start but you will need to go from here to fine tune...

Do not zero out the injector temp table. That has nothing to do with injector timing anyway.

If you want to learn you can watch this, and also use the EOIT tool in my sig line....

Well looks like the file corruption was something else. The funky MAF Hz and MAF failure appears to be related to the fact that the ARP nut backed off the stud on the #8 intake rocker. It chewed up...

I was doing some testing yesterday and after a WOT pull the car started acting "funny". It was running rough and fuel trims went from -2% to -20 to -30%. I was convinced it is was a broken...

It started because I got too good of a deal on a flex fuel sensor. I know adding E on an N/A motor isn't worth much, but I was chasing a community 1/4 mile list times and every ounce of torque was...

My understanding is this.

First offset is not a good term. Offset indicates moving the injection event sooner or later (like SOI or EOI). But apparently offset is an adder to the total pulse...

I haven't put E85 in for a long time (I assume its also problematic too).. It's E0 - E10 and it's consistent taking taking 2-3 seconds of cranking after sitting for 30+ minutes. I'm sure it does it...

For the record I'm NOT advocating zeroing out the tip temp offset table! I would do anything to get the correct values! Until then messing with it is going to be a diagnostic tool until I can get...

GPI SS3 cam 233* / 253* duration at 050 and .646" / .637" valve lift.

I have been using PPV flex fuel startup stuff including the FA1 table. Not sure how I got the offset numbers...they don't...

So this is interesting. I did my normal 30 minute shut down heat soak interval, but this time I opened the hood and put a small fan directly on the ECT sensor....

Normal/No Fan 30 min:

ECT...

No change, unfortunately. This is what I always run into. Cold and hot starts are seemingly unimpacted. Also, heat soaked starts are unimpacted. It is like nothing ever changes. :banghead:

145629...

I am not sure how this will impact forced induction engines, however, for N/A engines the manifold volume is used as a basis for one of the inputs for the transient fueling calculation. This can be...

Wideband output added.

Results: not much changed. However, it is interesting to note that the 30 minute heat soak test did reveal a nice initial RPM spike up to 333 rpm right at the start of...

I have tried that. In fact the tune I uploaded called "hjtrbo 20 pct more FA1.hpt" has the MAF SS values set to 20 g/s and I increased the stepdown value as well.

With all the airflow changes I am...

Yeah I will have to crawl under the dash tomorrow to rewire it for constant power.

yep yep been there got the logs.

The OL tables are set up to mirror a 2012 Holden/Chevy PPV with the factor flex fuel, otherwise this car won't start on tastier blends of E.


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145565...

I tried this and it resulted in the worst results yet.

Again, this is not a high fuel pressure issue. This happens after pressure drops to normal and injector tip temp calculates higher.

I am...

The gauges on most vehicles are computer controlled dummy gauges designed to control the driver, not report accurate numbers. Trust the HPT scanner.