ls6 maf on a 97 C5

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From: Virginia

Re: ls6 maf on a 97 C5

godspeed sent me this 'o1 ls6 maf scale' too.. i wonder why its different than the one speartech sent me? which do i use?

this one looks like i gotta plot it in excel then pull the numbers i need off of it.

1488 1616 1744 1872 2000 2128 2256 2384 2512 2640 2768 2896 3024 3152 3280 3408 3536 3664 3792 3920 4048 4176 4304 4432 4560 4688 4816 4944 5072 5200 5328 5456 5584 5712 5840 5968 6096 6224 6352 6480 6608 6736 6864 6992 7120 7248 7376 7504 7632 7760 7888 8016 8144 8272 8400 8528 8656 8784 8912 9040 9168 9296 9424 9552 9680 9808 9936 10064 10192 10320 10448 10576 10704 10832 10960 11088 11216 11344 11472

2.32 2.70 3.15 3.65 4.16 4.73 5.36 6.05 6.80 7.64 8.53 9.47 10.43 11.45 12.56 13.78 15.09 16.49 17.98 19.58 21.26 23.03 24.91 26.88 28.95 31.13 33.40 35.78 38.28 40.93 43.73 46.69 49.80 53.07 56.51 60.11 63.88 67.80 71.90 76.16 80.58 85.16 89.91 94.83 99.93 105.20 110.65 116.28 122.12 128.15 134.38 140.87 147.59 154.53 161.72 169.15 176.82 184.73 192.82 201.15 209.74 218.61 227.77 237.26 247.08 257.27 267.86 278.88 290.34 302.31 314.81 327.88 341.56 355.91 370.95 386.76 403.36 420.83 439.20

Jan 29, 2003 | 11:42 AM

#22

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From: Anderson, Indiana

Re: ls6 maf on a 97 C5

Mine's just a straight read from a stock 01 Z06. I don't know what that is. It looks like somebody has been manipulating it back and forth, because it has lost the original GM frequency parameters. I guess godspeed could shed some light on it. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

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Jan 29, 2003 | 11:49 AM

#23

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From: Anderson, Indiana

Re: ls6 maf on a 97 C5

Ah, I found it. That's a stock 99 F-body MAF table. Not the 85mm MAF at all. Somebody needs to get that title corrected quick. <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

John

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91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno

www.speartech.com

Jan 30, 2003 | 11:59 AM

#24

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From: Virginia

Re: ls6 maf on a 97 C5

which one is wrong? yours or godspeeds?

i allready entered yours in by hand.. <img border="0" title="" alt="[Frown]" src="gr_sad.gif" />

Jan 30, 2003 | 02:30 PM

#25

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From: Anderson, Indiana

Re: ls6 maf on a 97 C5

Certainly not mine!! <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

John

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91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno

www.speartech.com

Jan 30, 2003 | 07:17 PM

#26

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From: Virginia

Re: ls6 maf on a 97 C5

yay, ok im sticking with that one..

it is a real bummer that in my hz range (98 computer) that my highest g/sec is 349.59 <img border="0" title="" alt="[Frown]" src="gr_sad.gif" />

i almost feel like putting the stocker back in so i can meter back to 439.20 i'd really rather not have to rely on p.e. that early

Jan 30, 2003 | 09:14 PM

#27

98TAauto

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From: Warsaw, Va

Re: ls6 maf on a 97 C5

John/David: I just got done talking with LS1speed and im probably gonna get the Z06 MAF from them. They also told me that for the calibrated MAF to leave the MAF table on my car the way it was, since the MAF was already calibrated for the 98-02LS1. That sound right??
they said for any tuning tweaks just to edit that on MAF just like you would the stock sensor(use the stock MAF table)

Jan 30, 2003 | 10:29 PM

#28

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From: Virginia

Re: ls6 maf on a 97 C5

sure, thats the easy way to do it.. of course a factory meter does cost half as much and all you have to do is enter like 30 numbers into your edit file, then your done, but whichever way you want. <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />

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Jan 30, 2003 | 11:27 PM

#29

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From: Pleasanton

Re: ls6 maf on a 97 C5

<blockquote>quote:<hr />Originally posted by MIGHTYMOUSE:
 yay, ok im sticking with that one..

it is a real bummer that in my hz range (98 computer) that my highest g/sec is 349.59 <img border="0" title="" alt="[Frown]" src="gr_sad.gif" />

i almost feel like putting the stocker back in so i can meter back to 439.20 i'd really rather not have to rely on p.e. that early <hr /></blockquote>I have a 97 and mine goes to 428.xx with the ls6 Maf

Jan 30, 2003 | 11:31 PM

#30

98TAauto

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From: Warsaw, Va

Re: ls6 maf on a 97 C5

<blockquote>quote:<hr />Originally posted by MIGHTYMOUSE:
 sure, thats the easy way to do it.. of course a factory meter does cost half as much and all you have to do is enter like 30 numbers into your edit file, then your done, but whichever way you want. <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" /> <hr /></blockquote>easy=good <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> HAHHAHA

Jan 31, 2003 | 06:56 AM

#31

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From: Anderson, Indiana

Re: ls6 maf on a 97 C5

<blockquote>quote:<hr />Originally posted by MIGHTYMOUSE:
 yay, ok im sticking with that one..

it is a real bummer that in my hz range (98 computer) that my highest g/sec is 349.59 <img border="0" title="" alt="[Frown]" src="gr_sad.gif" />

i almost feel like putting the stocker back in so i can meter back to 439.20 i'd really rather not have to rely on p.e. that early <hr /></blockquote>Yeah that bites! Makes you wonder if it's even worth it on the early PCM's.

John

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91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno

www.speartech.com

Jan 31, 2003 | 07:03 AM

#32

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From: Anderson, Indiana

Re: ls6 maf on a 97 C5

<blockquote>quote:<hr />Originally posted by Wicked C5:
 <blockquote>quote:<hr />Originally posted by MIGHTYMOUSE:
 yay, ok im sticking with that one..

it is a real bummer that in my hz range (98 computer) that my highest g/sec is 349.59 <img border="0" title="" alt="[Frown]" src="gr_sad.gif" />

i almost feel like putting the stocker back in so i can meter back to 439.20 i'd really rather not have to rely on p.e. that early <hr /></blockquote>I have a 97 and mine goes to 428.xx with the ls6 Maf <hr /></blockquote>Wicked C5: 428.xx looks like your ORIGINAL table, not the LS6. With the 2002 LS6 MAF your final table entry should be 359.16 gms/sec @ 11250 Hz.
Kinda looks like you either entered the table wrong or didn't save the changes when finished.

John

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91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno

www.speartech.com

Jan 31, 2003 | 11:39 AM

#33

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From: Pleasanton

Re: ls6 maf on a 97 C5

<blockquote>quote:<hr />Originally posted by Speartech:
 <blockquote>quote:<hr />Originally posted by Wicked C5:
 <blockquote>quote:<hr />Originally posted by MIGHTYMOUSE:
 yay, ok im sticking with that one..

it is a real bummer that in my hz range (98 computer) that my highest g/sec is 349.59 <img border="0" title="" alt="[Frown]" src="gr_sad.gif" />

i almost feel like putting the stocker back in so i can meter back to 439.20 i'd really rather not have to rely on p.e. that early <hr /></blockquote>I have a 97 and mine goes to 428.xx with the ls6 Maf <hr /></blockquote>Wicked C5: 428.xx looks like your ORIGINAL table, not the LS6. With the 2002 LS6 MAF your final table entry should be 359.16 gms/sec @ 11250 Hz.
Kinda looks like you either entered the table wrong or didn't save the changes when finished.

John <hr /></blockquote>Yep your right I looked at the wrong file. I richened it up a bit now it ends at 384.40

Jan 31, 2003 | 02:24 PM

#34

Gary Z

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From: Berkeley, California

Re: ls6 maf on a 97 C5

Please help me understand this thread. The following statement raises a question that I need answered.

<blockquote>quote:<hr /> MIGHTYMOUSE
it is a real bummer that in my Hz range (98 computer) that my highest g/sec is 349.59 <hr /></blockquote>Is it not possible to change the frequency limits in the PCM? I do not yet have LS1Edit but I had gathered that the MAF table consists of a list of flow/frequency pairs and that both values of each pair could be altered. Mightymouse implies that the frequency values are fixed and that only the flow values can be edited; is this true?

Thanks, Gary

Jan 31, 2003 | 09:29 PM

#35

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From: Anderson, Indiana

Re: ls6 maf on a 97 C5

I think you've got it about right. The frequency is the axis of the table and is set in the PCM. That's why the newer PCM's are better for taking advantage of the bigger MAF sensor.

The 97-98 PCM MAF range:
1500 - 11250 Hz.

The 99-00 PCM MAF range:
1500 - 12000 Hz. (extended upper range)

The 01-02 PCM MAF range:
750 - 12000 Hz. (extended upper and LOWER range)

So I would think the 01 and newer PCM would be the best to use with the 85mm MAF sensor. Not only on the higher end, but also for idle sensitivity.

When I upgraded to the LS6 screened MAF (01), I simply plugged in the correct table, and everything worked perfect. Normal fuel trims, normal idle, great performance!

John

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91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno

www.speartech.com

Feb 1, 2003 | 01:16 AM

#36

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From: Virginia

Re: ls6 maf on a 97 C5

how much stuff would i screw up if i tried to put a 99+ pcm in my car? not possible at all?

Feb 1, 2003 | 02:39 AM

#37

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From: Pleasanton

Re: ls6 maf on a 97 C5

<blockquote>quote:<hr />Originally posted by MIGHTYMOUSE:
 how much stuff would i screw up if i tried to put a 99+ pcm in my car? not possible at all? <hr /></blockquote>I thought about putting a 01 Z06 PCM in?

[ February 01, 2003, 02:50 AM: Message edited by: Wicked C5 ]

Feb 1, 2003 | 04:03 PM

#38

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From: Anderson, Indiana

Re: ls6 maf on a 97 C5

The problem with doing that is that the 97-98 PCM is unique and VERY different from the 99 and newer PCM's. The PCM pinout is completely different between the two series of PCM's.

I've converted 3 or 4 of them here in the shop, and although it works great when finished, completely re-pinning those two connectors is not a small undertaking!!

John

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91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno

www.speartech.com

Feb 1, 2003 | 04:24 PM

#39

Gary Z

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From: Berkeley, California

Re: ls6 maf on a 97 C5

Speartech, MM – thanks for the information. I can now confidently proceed with my plan to install an LS6 MAF sensor in my Z28. This forum is invaluable.

-Gary

Feb 1, 2003 | 04:26 PM

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