1968 Camaro with Twin Turbo LS7 Tuning Help

[Smoky68]

I have an LS7 with twin 369s, ID1300's, 9.7 to 1 compression and a T56 Transmission, I can give more specific details if needed. I've been tuning for a while, and think that I'm decent at it, but I'm struggling getting my car to run for more than a few hundred miles without fouling plugs and misfiring. One of the things that I was thinking is the issue is that my O2 sensors are after the turbo in the down pipe. Could I please get someone to look over my tune and let me know if they see anything that could be causing any issues?

[blindsquirrel]

How much pipe is there after the O2s? If they are too close to open air they will be false lean. And I sure hope there is at least one wideband being used somewhere in a setup like this and that it's been checked to make sure it's accurate. Though if the narrowbands are suspect and can't be used as a reference that will be pretty hard to do.

You're using a MAF with this?? (why?)

Cat Test & Post O2 test are still on, those are solely for the downstream sensors which are no longer there.

Your injector data doesn't match the sheet I have for ID1300s but there's probably more than one variant... can you link to your exact injector or its datasheet?

[5FDP]

You're fueling must be too rich while cruising if you are fouling spark plugs. Without a data log with a wideband, I can't really see how it's running.

[edcmat-l1]

The VE table is interesting that's for sure.

MAF curve isn't the best either.

Data log will tell you more than the tune file will. A tune file can't tell you what's going on.

[blindsquirrel]

The VE table is interesting that's for sure.

Nah dude, it's MAF-only, it doesn't even use VE.

screenshot.03-05-2024 07.02.22.png

[edcmat-l1]

Nah dude, it's MAF-only, it doesn't even use VE.

screenshot.03-05-2024 07.02.22.png

LOL MMMk

[Smoky68]

I will upload a log after this weekend, I?m military and will be working this weekend,