Ls7 maf frequency

[Kevspec]

Has anyone got maf settings to suit a ls7 maf conversion

[Tre-Cool]

just pull up a hpt or efilive tune file from a c6 z06.

[Kevspec]

i dont have either of those to check

[VTXU8]

Found this post from VX L67 Getrag. I'm will be doing the same very soon in 4" pipe.
View his attachment in a spreadsheet.

LS7 Maf freq.xlsx

(8.69 KiB) Downloaded 163 times

[Kevspec]

all of these tables only seem to go to 12200 hz where the spread sheet etc goes to roughly 16000 hz depending on data input but im trying to find out if anyone has matched to g/sec vs hz on the spread sheet on even has a bin with it done as not sure if what im doing is correct in the spreadsheet

[pman92]

The sensor will only read to ~12000hz

The g/sec value will depend on the size of the pipe it is mounted in.
There's values shown in the spreadsheet posted above that look to be g/sec, but again they will only be valid for how that sensor is mounted (what diameter pipe it is in).

[VTXU8]

As Tre-Cool said. Look at Z06 tune as it used the same with 4" pipe but I can't find that file yet.
But looking at the VT V8 Enhanced Maf tables, they seem reasonably close to that spreadsheet to a point. Myself, I will just use existing Enhanced maf tables and just tweak the injector multi table as I go. Not great but it will be a good start. Unless I can find a decent Ls7 maf file with a good curve to 15khz.

[antus]

15khz is for boost with smaller sensors, if the sensor can handle it. Its one of the mods the enhanced tunes add. With a bigger pipe and better sensor like others said the hz shouldn't get up there. For it to get up there the sensor needs to be able to handle it (its above the operating range the factory uses) and you need to have high airflow in smaller pipe. Its really a hack to push the smaller sensors, like the stock OEM v6 sensor further without changing the hardware. The stock commodore V6 sensor can get above 12khz and allow you to run more boost, enough for some applications. But its the lottery to know how high any given sensor will meter too. In this case, just follow the slope of the values you do have so the values are not crazy in that part of the map but don't expect to see that range used.

[Kevspec]

15khz is for boost with smaller sensors, if the sensor can handle it. Its one of the mods the enhanced tunes add. With a bigger pipe and better sensor like others said the hz shouldn't get up there. For it to get up there the sensor needs to be able to handle it (its above the operating range the factory uses) and you need to have high airflow in smaller pipe. Its really a hack to push the smaller sensors, like the stock OEM v6 sensor further without changing the hardware. The stock commodore V6 sensor can get above 12khz and allow you to run more boost, enough for some applications. But its the lottery to know how high any given sensor will meter too. In this case, just follow the slope of the values you do have so the values are not crazy in that part of the map but don't expect to see that range used.

Yes the factory maf we have maxed out the 12khz and on this combo is roughly 12 psi of boost in a 3" pipe so if all goes well we should be able to have more resolution and better fueling how much boost it will read is what we are about to find out buts it's more getting the maf settings correct as most people will adjust the fuel table to suit not both fuel and maf tables

[antus]

Yep. So going back to the original question, from a quick google it looks like the Z06 LS7 is the 7.0L not the 6.0L? Here is a hpt format file. I don't have a way to convert it. I can't say for sure its the MAF you are talking about but it seems to be from the above posts. I modified the above spreadsheet for the MAF data in this file.