Something is limiting my RPMs?

[edcmat-l1]

Injectors, VE, all that might be off but the O2s look plenty rich enough. I'd crank some timing in the thing. It's showing 15 degrees in the log. It's a low compression truck motor with a shit intake for midrange torque. It's like it won't pull itself through the midrange that or something mechanically is holding it back. Even if it does get through that range the timing drops out of it at 4400 so it ain't gonna pull past there. The blade is wide open and it looks like it has plenty of fuel. Would bet it's just a dog because of the low timing and the intake. Terrible choice of intake.

[blindsquirrel]

It could be worse, at least it's not a low ram.

[gametech]

This will give him more torque, lol.002-holley-sky-ram-moonshort-april-fools.jpg

[edcmat-l1]

This will give him more torque, lol.002-holley-sky-ram-moonshort-april-fools.jpg

Pretty sweet but them headers will never keep up LOL

[edcmat-l1]

It could be worse, at least it's not a low ram.

Ain't that the truth. I love telling people how awful they are. The look on people's faces LOL

[SiriusC1024]

Having wrong injector data isn't helping the timing situation. Do you have the data or a part number? 80lb rated should be around 92lb, but you have 101.3. The rest is surely off. Once the injector data is correct, tune VE. From there spark can be mapped because Cylinder Airmass will track. No way you're 1.20g on this.

[edcmat-l1]

Having wrong injector data isn't helping the timing situation. Do you have the data or a part number? 80lb rated should be around 92lb, but you have 101.3. The rest is surely off. Once the injector data is correct, tune VE. From there spark can be mapped because Cylinder Airmass will track. No way you're 1.20g on this.

I agree with all of that but even after doing all that it'll be the same situation if you don't add 10 degrees to it. Especially after 4400 when it nose dives.

[blindsquirrel]

According to the datasheet, these are 88lb-hr @ 300kPa/43PSI.

[SiriusC1024]

I agree with all of that but even after doing all that it'll be the same situation if you don't add 10 degrees to it. Especially after 4400 when it nose dives.

Agreed about the spark. Was just adding on to the subject.

According to the datasheet, these are 88lb-hr @ 300kPa/43PSI.

So it is. I missed the data at Post #7. Still, the tune doesn't match what's in the file. IFR is a little off, offset is plain wrong, and SPA is a little different. Transient>Min Fuel Mg needs to be 0.007 or so.

Further, given IFR being very close to the injector data file, why is VE so high? The high MAP areas were either extrapolated way too high, or the wideband is dead wrong.

The low end of the VE table is screwed up because Offset and SPA weren't entered correctly, especially Offset.

Here. Setup for SD tuning. Go through the changelog to see what was done. There were a few mistakes.

Looks like I already caught it earlier. Sorry about that haha. How about a log of what I posted?

[Mingus]

Having wrong injector data isn't helping the timing situation. Do you have the data or a part number? 80lb rated should be around 92lb, but you have 101.3. The rest is surely off. Once the injector data is correct, tune VE. From there spark can be mapped because Cylinder Airmass will track. No way you're 1.20g on this.

I found the injectors to be 100lb, not 80lb. I also dropped 20% from the entire VE table, then corrected it further down to 1-3% error showing now. The MAF data must be way off. I disabled the MAF, and this seem to fix the RPM limit issue. After I fix my new coolant leak, I will re calibrate the MAF, and start bumping up the timing.
Right now, I'm running the stock timing tables from a 6.0 Cadillac Escalade. What ballpark should the timing be in the WOT areas? 24-26 ish?

[RDF1]

I found the injectors to be 100lb, not 80lb. I also dropped 20% from the entire VE table, then corrected it further down to 1-3% error showing now. The MAF data must be way off. I disabled the MAF, and this seem to fix the RPM limit issue. After I fix my new coolant leak, I will re calibrate the MAF, and start bumping up the timing.
Right now, I'm running the stock timing tables from a 6.0 Cadillac Escalade. What ballpark should the timing be in the WOT areas? 24-26 ish?

What fuel are you running?
And Gen 3 6.0 meaning a LQ4 with 317 heads?

[Mingus]

What fuel are you running?
And Gen 3 6.0 meaning a LQ4 with 317 heads?

Yes, it's an LQ4 with 317 heads. I run 87 Octane <$ . Not a race car, I just want to have fun every now and then.Caddy.jpg

[edcmat-l1]

OMG I'm so jealous.

[pdsq98gt]

Take it easy on the timing with 87 octane. I just tuned a 1500 hd 4wd truck and only put 20* at WOT. It had a stage 1 cam and I was hitting .80 g/s. The stock timing table falls off a cliff and only had like 8* at that spot in the table before raising it up. If your ve table is too high it?ll artificially push you higher in the timing table. So you definitely need to have the ve table and the maf tables correct to be in the correct cells in the timing tables.