Idle Airflow w/ and w/o clutch engaged

[phuz]

Wow look at what the wideband is doing. 16.86 AFR at a commanded 14.68 with narrowbands switching about stoichiometric.

I've done quite a bit of reading on how a cam like this can cause false lean readings at idle, but why would it only appear on the wideband and not the narrowband? The wideband matched the dyno wideband for the pulls so I have to trust it.

Yep nowhere near 16:1. In fact, the slightly richer switch point gives further evidence of the wideband vs narrowband error.

Where is the wideband located on your setup phuz?

Sensor is about 40" downstream and before the X-pipe.

FIC is asking if you're using the tall black LS1 Deka 60's?

Or from here which one?
https://fuelinjectorconnection.com/collections/ls1-ls6
Attachment 138191

Would you mind posting the sheet you got from FIC so I can forward it to them?

I believe it's the middle one, but could be the one on the right. Definitely the Deka 60# Tall.

660cc FIC_Deka60_Tall_03242022.xlsx

[SiriusC1024]

Speaking of...what cam? You haven't adjusted injector timing. That could possibly have something to do with it. Setting this right is important to prevent the injector firing while the intake valve is open.

[phuz]

Speaking of...what cam? You haven't adjusted injector timing. That could possibly have something to do with it. Setting this right is important to prevent the injector firing while the intake valve is open.

Texas Speed Torquer V2

[SiriusC1024]

There are few varieties of Torquer V2. Do you happen to have the cam card?

[phuz]

There are few varieties of Torquer V2. Do you happen to have the cam card?

I don't because I was not the one who installed it, unfortunately.
It's 232/234 0.600, though.

[SiriusC1024]

Well it's probably a 110 ICL. Pretty common for large cams. It's either that or 108. Plus, I found a cam card for 113 LSA showing 110 ICL. Maybe not the same cam, but I'm having trouble finding exact info. Your specs are for the 112 LSA.
TorquerV2_113.png

Use this calculator:
https://www.summitracing.com/newsand...ing-calculator

Plug the results into the attached spreadsheet. This is what I came up with for 232/234 112 LSA 110 ICL.
EOIT TSP.png

[edcmat-l1]

It is possible the WB reading is from the cam. They will tend to read lean when the narrowbands don't. I completely ignore them until there's some velocity going across them.

What does it read rolling down the road at 2000 rpm, light throttle, closed loop? It should be accurate there. If it reads roughly stoich there, I'd call it good.

Other than that, bout the only thing you could do is put it in an unmodified vehicle and see what it reads at a hot idle. But it would have to be upstream without removing an upstream O2. So you'd have to weld in a bung.

[SiriusC1024]

I believe it's the middle one, but could be the one on the right. Definitely the Deka 60# Tall.

660cc FIC_Deka60_Tall_03242022.xlsx

Thank you. I forwarded the info to FIConnection. We'll see what they have to say.

Greg Banish does really good work. I've never seen an injector datasheet so thorough.

[phuz]

What does it read rolling down the road at 2000 rpm, light throttle, closed loop? It should be accurate there. If it reads roughly stoich there, I'd call it good.

It's pretty close to stoich at that point.

[phuz]

What does it read rolling down the road at 2000 rpm, light throttle, closed loop? It should be accurate there. If it reads roughly stoich there, I'd call it good.

It's pretty close to stoich at that point.

IAC is pegged, too.

Just FYI, if you're referring to the IAC being at 310 steps, that number doesn't change. Literally every log says 310 for the entire duration. And from what I've read, I believe this is because I don't have an IAC. Instead, it's DBW.

[SiriusC1024]

Oh ok not DBC.

[edcmat-l1]

Oh ok not DBC.

Y body DBW

F body DBC

Trucks, take your pick LOL

[SiriusC1024]

FIConnection confirmed that the data you have is correct.
FIC_Email_Chain.png

Now wtf is up with AACorvette's data. I'll forward the results to them and see if anything comes of it.

[phuz]

FIConnection confirmed that the data you have is correct.
FIC_Email_Chain.png

Now wtf is up with AACorvette's data. I'll forward the results to them and see if anything comes of it.

I've already told Andy his data is wrong. He sent me a base map when I bought his A&A kit and the car wouldn't even run. It was so pig rich my eyes burned.
I immediately abandoned it, called FIC and they sent me that table. I plugged in those numbers and voila, started right up.

That being said, I don't know why Andy is still using that old file.

[SiriusC1024]

Y body DBW

F body DBC

Trucks, take your pick LOL

It's that easy? For some reason I thought 01-02 Fbody went DBW and Pre-2000 Vette was DBC.

I have this hangup where if something pisses me off I don't learn it. DBW happens to piss me off. That's why I never can remember. Your way is easy though.

[SiriusC1024]

I've already told Andy his data is wrong. He sent me a base map when I bought his A&A kit and the car wouldn't even run. It was so pig rich my eyes burned.
I immediately abandoned it, called FIC and they sent me that table. I plugged in those numbers and voila, started right up.

That being said, I don't know why Andy is still using that old file.

See now that sucks. That means all his data is questionable.

[phuz]

See now that sucks. That means all his data is questionable.

He told me he used that data on hundreds of cars and it worked fine, and I wasn't about to get into a pissing match.
The fact is the data was wrong, I got the good data and moved on. He makes a hell of a kit, though. The bracket itself is a work of art.

[edcmat-l1]

It's that easy? For some reason I thought 01-02 Fbody went DBW and Pre-2000 Vette was DBC.

I have this hangup where if something pisses me off I don't learn it. DBW happens to piss me off. That's why I never can remember. Your way is easy though.

Yeah all C5s starting in 97 are DBW.

4th gen F bodies 98-02, DBC.

GTOs, 04 was DBC, 05-06 DBW.

GEN3 trucks, take your pick. You gotta look in the systems tab. Most P59s were DBW. Most P01s are DBC, but there's some crossover on both.

Everything E38 and up is all DBW.

[SiriusC1024]

Yeah all C5s starting in 97 are DBW.

4th gen F bodies 98-02, DBC.

GTOs, 04 was DBC, 05-06 DBW.

GEN3 trucks, take your pick. You gotta look in the systems tab. Most P59s were DBW. Most P01s are DBC, but there's some crossover on both.

Everything E38 and up is all DBW.

The Systems tab. Of course! Blindsquirrel showed me that once. Got to get into the habit of paying more attention to that. Thanks for the reminder.

[SiriusC1024]

He told me he used that data on hundreds of cars and it worked fine, and I wasn't about to get into a pissing match.
The fact is the data was wrong, I got the good data and moved on. He makes a hell of a kit, though. The bracket itself is a work of art.

Right on.