ricknbird350

iTrader: (21)

like the title says. can i use a 94-97 maf on my 98 ls1

ricknbird350

iTrader: (21)

anyone?

tording99Z28

iTrader: (3)

I am going to go with negative. The 94-97 cars with the LT1 are a completely different animal than the LS1. I am sure that along with all the redesigns the MAF was one of them. Maybe someone else will chime in here with another answer but I highly doubt they can be swapped with one another.

If you need another MAF just pick a used one up out of the classifieds, I got one for $50 back a few months ago when mine went out.

nemss1

im pretty sure the MAF calibrations would be different

Dan Stewart

You need to stick with a LS1 maf.

I see that you need a wiring harness and pcm too.

Remember that the '98 harness is different than the other years as is the pcm.

The '98 MAF does not incorporate the IAT sensor in it like the later years.

I would use a later model harness and pcm, then get whatever sensor is not compatible with the connector.

ricknbird350

iTrader: (21)

thanks for the responses..
so a 98 maf is different than the 99-02 also?

i really wish they would of kept everything the same for swapping reasons.

Mike454SS

iTrader: (4)

There's a whole lot of incorrect information on this thread.

I'm not sure who's saying that the MAF has the IAT in it on any stock F-body...but they're wrong...the MAF for a 2002 is the same as it is in a 1998...also, the MAF from a 1994-1997 LT1 F-Body is the same part number, as the MAF from a 1998-2002 LS1 F-Body. If you see someone with an F-Body running a MAF with the IAT built into it, thats not stock (some of us are just really good at wiring in sensors to look like they are in fact stock )

You can't just copy the MAF tables from an LS1 PCM to an LT1 PCM, or vice versa as the scaling in the tables is different (if my memory serves me the LT1 PCM is every 128 hz and the LS1 is every 125 Hz...took me some matlab work to make myself tables for the LT1 PCM to use the newer 5 wire MAF from the ZO6 and trucks and other new vehicles) but it is from 1994 through 2002 the same sensor, and using one from any 1994-2002 F-Body with that cars stock programming will work.

2xLS1

iTrader: (25)

I have interchanged the 94-97 MAFs and the 98-02 MAFs without any problems. They do have different GM and AC Delco part numbers, but I think that is because the 94-97 MAFs have a screen that is held in with a snap ring and the LS1s are glued in. That alone would necessitate a different part number the way GM does things. If the calibrations are different, it is so slight that the trims will adjust for it. If you have tuning software and are going to calibrate the MAF anyway, either one will work.

Also all 98-02 F-body MAFs are the same. None used the 85mm MAF with the internal IAT.

94-97 MAF AC Delco 213-252 GM 25008308
98-02 MAF AC Delco 213-353 GM 25179711

ricknbird350

iTrader: (21)

thank you very much i to just called and checked part numbers right before i read this. they are the same.

i just bought the 98 and it doesnt have one. and i have 3 for my lt1. so it works out great.

now i just need the hose that adapts from the ram air box to the maf. to the throttle body. without the silencer. ill probably have to custom make it.

2xLS1

iTrader: (25)

If the part numbers are the same now, then GM has superceded one with the other, because they used to be the numbers I listed.

Mike454SS

iTrader: (4)

Thats where my info came from...same replacement PN for both.

2xLS1

iTrader: (25)

Again, I believe the differences when they had separate numbers was the way the screen was held in.

Mike454SS

iTrader: (4)

I agree with you, I've been swapping them around on vehicles for years (and installing them on B-Bodies since they came with smaller sensors), I just never had actual part number data on them before looking up the replacement PN's, but you are correct, the original 3.5" MAF had the snap ring, then the newer one did not. Sensor calibration is the same though, and it depends on the style of air intake the car is equipped with, on a ram air LT1 firebird you will find different tables than you will find in an LT1 Z28...for the same sensor...just like a 5 wire MAF in a truck is going to have different tables than it has in a ZO6...everything I have seen shows all the LS1 F-Bodies have the same MAF tables...as the MAF is in the same place relative to the TB in all of them...unlike the LT1 cars where in some cases it's off to the side (like a B-Body) and in other cases it's right in front of the TB.

Dan Stewart

Taking notes on this one. I personally haven't had the chance to look at the F-body MAF's newer than '98 (plenty of lt1's one '98 and one '97 LS1 vette). The information I had was from several of the "tuning guides" for HPTuners. Given that fact, there are quite a few of those guides out there that need revision. My 5.3L does have it integrated, so I was under the impression that the information in the tuning guides were correct. Thanks for clearing that up for me, Mike.

And, it's nice to know I can integrate other MAF's into my project as well,