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Ok cool, also I am not using cats or a muffler so there is little chance of exhaust restriction. I am going to do the sparkplugs in a few days

Also here is a question that came up in other threads, could the spark plugs be causing this? they are the stock sparkplugs from an LS3 should i use colder spark plugs?

Here is another new log and new tune. It seems like there is a limiter at 5000 RPM if you look at it.

changed the ivt rev limit tables and a few other things. here is the log and tune. How do I change the kpa? also it is still falling on its face around 5k RPM

ok here is the tune and log for it. its still limiting at 5k rpm and the delivered torque will not go over 640 ftlbs

here is the log for all of the things you said to do. with the torque management and speedo.

Ill post a new tune and log in a week and a half. Should I message you for help or do you want to wait for a notification from this thread?

The tune is the same except for the knock sensors being desensitized

How can I dial it back more? I have a 10PSI spring.

I did that and it has helped but it feels like there is a rev limiter or something at around 5k still.

Ok so I am running 10lbs of boost and I am still hitting KR with the new spark tables. Do you know what I have to change?

Thank you. Ill get back to you guys on friday when i can look at the car again.

We are just using 93 octane fuel. No meth injection. ill look at the stock tables and try to mimic it in terms of shape but isnt the spark map supposed to look like an inverted N/A map kind of?

Can anybody help?

Also I still seem to not be able to get passed 4500 RPM. it is hitting KR for some reason and I thought it was because of the fuel pump and injectors so I upgraded to 80lb injectors and a higher GPH...

I just got new 80lb injectors, I put the new injector data in and my AFRs are a little wonky plus my bank 2 injectors are all over the place. Here is the data and the tune can anyone help? the...

I'll try to take some fuel out at the upper RPM's but I thought that it was still doing that at 11.5 too. and Ill try increasing the timing as well. I thought if you have a little too much fuel at a...

6568865689I got a new fuel pump it should be good for upwards of 750HP and its rating is 455LPH at 13.5 volts. and it seems to be running better but it is breaking up around 5800. here is the log and...

What problems would i run into if i run a piggyback pump after the stock pump?

Fuel pressure drops 7 psi. The most the inj duty cycle goes is 68%

what about adding an external fuel pump?

Ok now. If i compound my stock pump with an external pump and a manual fuel pressure regulator with a return line would that work?

I am losing rail pressure at around 10lbs or 165 kpa

So I can't get any more pressure out of my pump then? What do I need to do? Or what kind of pump do I need

I have tried to turn up the fuel pressure from 58 psi to 70psi, however it seems the max it will go up to is 65psi. I went to Fuel Sys< Desired Fuel Pressure< and changed everything to 70psi. is...