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If you're still getting it w/100 octane gas and you find IAT's are OK, it may be time to consider desensitizing the sensors, especially w/your mods. False KR in the 5K range is not uncommon with our...

Hopefully you're out there Jimmyblue. I ran another scan today with +2 degrees advance and the results are similar. I logged total misfires so I could also log trims and O2 sensors. Looks OK to me,...

I've heard the knock relearn was slow. I didn't know what to expect. Started yesterday at .22 and after 40 minutes it was almost .75. The freak run (advanced timing) this morning had it at 1.0 in...

Thanks for the fast reply JimmyBlue. I'm surprised to hear this is normal--I searched LS1Tech and saw you mention it happens with your car as well. I guess I won't worry about it coming from you.
...

After doing a VE/MAF tune and getting trims set I decided to attack the irritating false KR issue many 98's have, even though my 98 was built in late June and I believe has the 99 sensors. It only...

This should get you started!

http://www.ls1tech.com/forums/showthread.php?t=287094

Thanks for replying. The Excel sheet sounds great--thank you. Haven't found any data yet regarding what differences exist between years mechanically. I'll keep tryin'.

Seems to me the shift time table is already pretty conservative, not sure you can get much more, or would want to. Have you looked at the force motor current vs line pressure vs temp table yet? That...

Hi all,

I've spent a few hours comparing the A4 settings for a stock 02-03 C5 versus stock 98 settings. I like my current mods, but it does make me wonder if the 98's were more conservatively...

Turns out my stock MAF with the 98 C5 has an almost identical curve to the Monaro. After tuning STFT's are basically the same in SD or non-SD mode. Sweet!

Hi all,

I've searched and read the various posts on PE tuning, and I see in HPT help the Fuel Multiplier vs RPM table states post 99 vehicles. Can I still use this for my 98?

Do most people...

This is a very good question, wish I had the answer. I too have an older LS1 with a separate IAT and could easily go MAFless. There should be more airflow w/o the MAF, but I also have read that most...

You could also calibrate your MAF, which is what some of us do. If you have an aftermarket MAF it's a must.

If you're interested, you can find the links to two folks who have great Excel...

Perfect, thanks. Now that I'm almost VE tuned on the lean side, I'm seeing red for the first time in the histogram. No foolin'.

Momma done told me there's no such thing as a dumb question...I hope. I've searched and turned up nothing. F1 in histogram display no help either.

When looking at fuel trims, I know blue is the...

Tonight's results are in:

The MAF curves running in SD mode versus non-SD are almost identical. 3 cruises in each mode. More data points in the 2300-5500 range, fewer in the 5500-8+K range. Not...

Hi all,

I've got an email going with redhardsupra--I'm logging Dynamic Airflow and MAF ffrequency using his calculation sheet:

1. In SD mode (MAF fail frequency set to 0)

2. With MAF...

I drove for about 45 minutes that way and didn't do any damage (yet....). Definitely not something I would do again! I knew something was up right away and stopped all manual shifting of 1-3, which I...

I just got mine back from Chris this morning, and could not find where the adjustment was made. I compared a considerable number of engine and tranny tables between bins too. Chris--is this something...

Think I have it figured out, or pretty close, anyway. I'm posting my bin so others can have fun.

Shift Speed vs TPS% vs Shift

The default values are terrible.....

Hi all,

I've made some nice firmness and speed changes for the A4. Upshifting doing much better, but I am still struggling with non-WOT throttle position downshifts from 3-2 that upset the car...

Ah, got it regarding adding parameters. You have certain options and limits depending on what format you're looking at. Thanks for the tip. Sounds like I will be able to do everything desired unless...

Hi all,

Just received 1.6 yesterday. I have a 98 C5 built in June 1998. I sold the Hypertech to get this product after some research. I've already run into the Unknown VIN issue where you can see...