How do I keep my DAM up?

[DUB]

I just arrived at my destination after an 1 hr 15 min drive. I had my AP plugged in because I just did the intake silencer delete mod and I was monitoring the IAT.
About 30 mins in to the drive I got stopped at a light and switched the AP to display the Dynamic Advance Multiplier. I was shocked to discover that it was only at 5.
So, I pulled off into a parking lot, reset the ECU using the AP and performed the shiv trick to bring the DAM back up to 16. I then went back to watching the IAT.
Upon arriving at my destination, 45 mins later, I switched back over and saw that the DAM had gone back down to 8.
Apparently, my ECU is . Why is it dipping so low and how do I keep it up?

EDIT: Large piece of information I forgot and may be helpful: I just installed a Crucial UP, Shorty DP and flashed to COBB stage 2 91 ACN last weekend.

[mycologist]

Could be a bunch of stuff. Is everything tight between the MAF and the turbo? Good fuel filter etc.? Anything that might make it lean, or too much oil leaking out of the turbo etc.

[DUB]

Originally Posted by mycologist

Could be a bunch of stuff. Is everything tight between the MAF and the turbo?

Should be. I removed the airbox for the UP/DP install and re-torqued the hose clamps.

Originally Posted by mycologist

Good fuel filter etc.?

Just did the 60k service 1,600 miles ago, so all maintenece type items are in top shape.

Originally Posted by mycologist

Anything that might make it lean, or too much oil leaking out of the turbo etc.

I dunno?

[mycologist]

I forgot the most obvious, bad tank of gas?

Clean the MAF?

You can see excess oil if it drains out of the intercooler, a little is ok.

[DUB]

Originally Posted by mycologist

I forgot the most obvious, bad tank of gas?

Clean the MAF?

You can see excess oil if it drains out of the intercooler, a little is ok.

Yeah, it could just be a crappy tank of gas, although I always thought Chevron was pretty good.

I didn't notice an alarming amount of oil in the intercooler last time I had it off, and I did check.

[testes1010]

The DAM/IAM drops due to knock. Thats the only reason it drops. Your car is knocking. Could be the gas.

The Shiv trick is a 'false' way to get the IAM/DAM back up, one or two WOT pulls should get the IAM/DAM back up to 16 IF the ECU does not see knock during those pulls. I would not recommend using the the Shiv trick.

In order to determine whether your knock is timing based or fuel based you'd need to be able to log timing with Romraider(you can use your AP cable) & borrow someones WBO2 if you know someone with one.

[jaqattack02]

Originally Posted by testes1010

In order to determine whether your knock is timing based or fuel based you'd need to be able to log timing with Romraider(you can use your AP cable) & borrow someones WBO2 if you know someone with one.

+1

RomRaider will log all 3 (or is it 4?) ways your car compensates for knock. IAM is only one of them. It's really easy to use too.

[DUB]

I am currently in the process of learning how to data log with RomRaider Logger and my AP cable.

Unfortunately, I don't have a WBo2 and don't know anyone that does. Can I still extract meaningful data from a log without the WBo2?

I thought you could hear it when your car is knocking, no?

[DubleUaReX]

Where can I get some DAM bait?

[testes1010]

Originally Posted by DUB

Can I still extract meaningful data from a log without the WBo2?

I thought you could hear it when your car is knocking, no?

yes, you'll at least know where its knocking, just maybe not why.

generally no, at least not with a noisey exhaust.

[DUB]

Cool, thanks for your help, Jeremy.

I'll run through this tank of gas, refill, do some logging, and see where I stand.

[mycologist]

When I was having a similar problem I posted some logs and it was some help, but ultimately you need to figure out what is mechanically wrong or get a tune that negates it.

If you want to figure out if you have a persistent issue, you can pull a plug and look at the size of the little balls with a magnifying glass - the melted material from your cylinder gets stuck on the electrode.

I am interested to hear what parameters to log to isolate the issue to fuel or timing - that would be a big help.

[DUB]

I finally found a chunk of time to go out to the garage and figure out how to log using my AP v2 cable........no dice.

I couldn't get my laptop to connect to the ECU using RomRaider or ecuExplorer. So, no data logging for me.

My DAM is still at 7 right now, but I am still on the same tank of gas.

[jaqattack02]

Originally Posted by DUB

I finally found a chunk of time to go out to the garage and figure out how to log using my AP v2 cable........no dice.

I couldn't get my laptop to connect to the ECU using RomRaider or ecuExplorer. So, no data logging for me.

My DAM is still at 7 right now, but I am still on the same tank of gas.

I've heard the AP V2 cable isn't likely to work. Something they changed in it for the new AP. The V1 cable will work though, or a Tactrix cable.

[DUB]

Originally Posted by jaqattack02

I've heard the AP V2 cable isn't likely to work. Something they changed in it for the new AP. The V1 cable will work though, or a Tactrix cable.

It works for some. No one knows why it works for some people but not for others.