Please Stage1 C7 Z51

Hello.! I have a C7 Z51 from 2015. It has a downpipe (no cat). Xpipe (not cat). and KN replacement filter.
I use 98 Octane unleaded gasoline.
In Spain it is the best there is, I think it is equivalent to the 93rd in the US.

I have an HP tuner and I have already done some things... but...
The truth is that I don't dare to make a good tune...
Could someone share a tested Stage1 with me? For my car, something without risk of breakage?
I attach my original file.
I hope I can learn to do it for myself. but while I would like to enjoy...
I'm sorry for my English. I am from Spain.Attachment 141263

gearbox 8AT

:( any help with this?

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Originally Posted by kprog

:( any help with this?

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I'll give you my thoughts but keep in mind I'm no expert....

With the very limited mods to the car, all your part throttle/driveability is unchanged. You could tweak the throttle percentages if you want more responsiveness but in my opinion it's not worth messing with anything else.

To gain more power, that's Wide Open Throttle tuning. For that you need a wide band o2 sensor. I'd be stunned if anyone provides tune values for WOT with zero data. Too much risk of blowing up the engine. Like part throttle, you haven't changed much so there's not a lot to be gained. OEM cats are surprisingly efficient and on the C7 Corvette they were sized for the 650hp Z06 so the LT1 really isn't experiencing flow constraints. About the only thing you need to do is turn off the aft o2 sensor DTCs so you don't get a check engine light.

From there you need to get on a chassis dyno with a wide band and tune WOT.....Timing and fueling. Again....You've changed very little so until you go full length headers, a cam, etc it's more about experimenting than any getting significant power increases.

There isn't much to gain here with those mods on an LT1. My advice would be to reduce the timing pull for Intake Air Temps and turn off Cat Overtemp. Without a wideband you can't do anything about dialing the fuel. Generally you can give it some more fuel in the 3000-4800 range along with a little more timing which would give it a bit more torque in that area. Then leave stock timing values above that. But again, problem is, without a wideband you don't know what the fuel looks like and you might just cause it to knock more.

As mentioned above not much to gain on the engine side with those mods! There would be better gains from transmission tuning. The stock TCM tuning on the A8 leaves a lot to be desired imo.

understood! thanks guys. The transmission adjustments are difficult to make, is there a tutorial or explanation of what I have to adjust?

Quote:

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Originally Posted by 1scls1z

As mentioned above not much to gain on the engine side with those mods! There would be better gains from transmission tuning. The stock TCM tuning on the A8 leaves a lot to be desired imo.

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understood! thanks guys. The transmission adjustments are difficult to make, is there a tutorial or explanation of what I have to adjust?

and another topic... To make pops and bang?
(explosions when decelerating)
I have modified minimum spark. base and long term. the first 4 lines at -15 at maximum rpm and decreasing.
With this I get some very cool bubbles.
And on the Base High octane map in the first 3 lines from 3,400 onwards all at -15
With this I get explosions when releasing the throttle at high RPM. very cool too.
The problem that I cannot solve... is that when I am downshifting, with the accelerator released I feel that the car holds well. There are times when the car wants to accelerate a little, and it is uncomfortable.
Is there a solution for this?

by the way. I have tried the technique of copying part of the virtual torque map. from the lowest map to the highest, and so on in all of them. This is supposed to solve the problem. but it hasn't been solved for me.