ssdungeon

Will the Z06 MAF work on a 97 Corvette? I have the 5 to 3 wire pigtail. When I plug it up the car dies. I was about to get another 85mm MAF but read a post about how the 98 Fbody wont accept this MAF because the frequencies are too high.

I havent tried it on my 98 Camaro yet. Here is a clip from the post I read:

"As I put in the subject line, I have a Z06 85mm MAF for sale. I bought it 2 or 3 years ago and never used it, as I have a 1998 Camaro and since it's the bastard child of the LS1 PCM's, it won't accept the high airflow rates of the Z06 MAF (the Z06 MAF is capable of sending out a signal more than 12000Hz which the 98's can't handle). I didn't know this when I bought the item from another member here at LS1Tech. If you have a 99+ PCM you should be alright, however.

This MAF also has the 5-pin to 3- and 2-pin harness so is ready to be dropped into an F-body LS1 setup (except 1998). The screen is in near-flawless condition; I haven't removed it or anything. I honestly can't attest to how much it was used before me, but I haven't used it in the last 2-3 years (and up to this point have been too lazy to try and sell it)."

I also found this on ls1howto:
"Optional - Requires LS1Edit software
If you did not buy the LS1 calibrated MAF, then now is the time to break out LS1EDIT and change over your MAF tables. The tables below show you the 2 tables you can use, depending on if you are using a de-screened maf or a screened maf.

You'll need to grab your stock program and open it up to the maf flow tables. You'll notice the table starts at 1,500hz, and goes up to 12,000hz on '99 and '00 cars, or 1,500 to 11,250hz on '97-'98 cars. Now, the actual tables used in 2001+ cars that come with these larger MAFs range from 750 to 12,000hz, so what do we do? Well, 750-1500hz is really low flow so we'll just ignore that whole section of the data since our computer will never understand it. If you have a 97-98 year car, that leaves you with the 11,250-12,000 range that will be unconvertible since no entries can exist for that range. What this means is with the new maf table, once you hit the 11,250hz your maf will flatline. Now, you may say that your car ran fine before with that limit so it also will with the new maf, but that is not the case. Read on...

The 97-2000 maf says that 11,250hz is 428.52 gms/sec of airflow. Well, the new 2001+ maf will say that 11,250hz is 359.16, which means that on a 97 or 98 year model car, your maximum measured airflow will drop by over 68gms/sec (from 428 to 359). This is why for '97 and '98 year models you should buy the recalibrated maf, or do not do this mod at all! 1999 and 2000 model cars will have the extended maf table up to 12,000hz and their ceiling will remain within the same threshold as it was stock, which is what we want.


2001+ Maf Tables
Note: These are only needed if you purchased a non recalibrated MAF
Freq (Hz) 1500 1625 1750 1875 2000 2125 2250 2375 2500 2625 2750 2875 3000 3125 3250 3375 3500
Screened 1.48 1.8 2.13 2.49 2.89 3.33 3.8 4.34 4.91 5.54 6.22 6.95 7.73 8.56 9.45 10.38 11.38
Descreened 1.42 1.76 2.1 2.48 2.86 3.26 3.7 4.18 4.71 5.31 5.97 6.68 7.43 8.23 9.08 9.97 10.91
(continued) Freq (Hz) 3625 3750 3875 4000 4125 4250 4375 4500 4625 4750 4875 5000 5125 5250 5375 5500 5625
Screened 12.45 13.6 14.85 16.21 17.7 19.32 21.02 22.77 24.54 26.43 28.41 30.49 32.66 34.95 37.36 39.9 42.62
Descreened 11.93 13.05 14.27 15.59 16.98 18.47 20.05 21.72 23.48 25.34 27.28 29.34 31.48 33.74 36.11 38.62 41.3
(continued) Freq (Hz) 5750 5875 6000 6125 6250 6375 6500 6625 6750 6875 7000 7125 7250 7375 7500 7625 7750
Screened 45.48 48.5 51.66 54.98 58.44 62.05 65.82 69.73 73.8 78.03 82.41 86.94 91.63 96.49 101.51 106.71 112.09
Descreened 44.17 47.2 50.4 53.77 57.3 61.01 64.88 68.91 73.12 77.47 81.97 86.63 91.45 96.43 101.59 106.9 112.36
(continued) Freq (Hz) 7875 8000 8125 8250 8375 8500 8625 8750 8875 9000 9125 9250 9375 9500 9625 9750 9875
Screened 117.63 123.35 129.24 135.3 141.53 147.87 154.41 161.15 168.08 175.22 182.58 190.23 198.21 206.34 214.8 223.52 232.52
Descreened 118.01 123.83 129.84 136.05 142.48 149.13 155.98 163.06 170.38 177.92 185.7 193.73 201.99 210.52 219.3 228.34 237.64
(continued) Freq (Hz) 10000 10125 10250 10375 10500 10625 10750 10875 11000 11125 11250 11375 11500 11625 11750 11875 12000
"

kp1

It will work on a '98. Your MAF table would need to be recalibrated by someone that knows what they're doing. Probably not worth the money or effort though.

ssdungeon

Since I need another MAF I was wonderring if I can use a z06 MAF I have one and the pigtail but it fails when I plug it up. It may be bad. I can get another Z06 MAF cheaper than I can get another 78mm MAF and since I have FAST 92/90s on both cars I figured it would be better. After reading the posts above I realize that maybe I can use the 85mm.
Before I purchase it I wanted to know if it was possible thats all.

Thanks a lot for the intel. Hopefully I can get this thing configured and working.

Blow Torch

Unless you're planning some MAJOR mods, you might be better off financially to just up a used stock 97-98 MAF. If not, you're going to have to get the MAF tables reconfigured. The larger MAFs will not run well unless you rework your tables, which, unless you know someone that will JUST do that and not charge much (not possible if he has to buy the license) you will have more $$ in the tune than a used MAF.

ssdungeon

I have the lic for my cars and HPTuners Pro. As far as MAJOR mods...lol. I have about every engine mod available for the cars including an lsx 408 stroker with all the bells and whistles. The only thing I know of that I dont have engine wise would be an electric water pump..lol.
I have a lot of things to get straight before really running the car. Eventually I will be going SD. Going with a bigger MAF was more than saving a few bucks. Everything else is larger then to bottleneck it with a 78mm MAF just felt wrong. I didnt want to invest in a 100MM or larger MAF because like I said I plan on going SD.
If its possible was all I needed to know really. The forums and trial and error will hopefully getter workin half decent for driving around.

Blow Torch

OK, let me try again
The Z06 MAF WILL work on a 98 vette, and i don't really think there were any MAF changes from 97-98. I know because I installed one on my 98 when I first went FI. I later went SD because of the MAF ran out of table. I had the pig-tail for the separate IAT and ran it before the TB. When I installed it, the car barely idled and would die until I readjusted the table, and then it ran perfect.
If you really want to eliminate the restriction, just go ahead and go SD now and be done with it

ssdungeon

If I could go SD now I would I have HPT pro but no working wideband so im scared to go SD until I get a good VE table setup. But afer thinking about what you said I could go to a shop near here and just pay a kat for an SD tune.

kp1

I wouldn't start messing with the ecm parameters very much w/o a wide band. They just don't cost all that much.

Blow Torch

I actually did all of my SD tuning EXCEPT WOT using my STFTs. I would even ease up to the 5000 rpm range (without going into PE or boost) and got my VE tables pretty much DEAD ON
I have both mounted and data-logging AFR gauges and of course would NEVER, EVER tune WOT without a wideband, but the STFTs were much quicker (if quick is the right word when doing SD) in getting most of the VE table dialed in
As you mentioned, you will need to purchase a AFR to go with that pro version to finish your tuning