Which is better???? what are the benefits of both, and does anyone make aftermarket MAF's? If not can they be easily be changed to a new style MAS????? Can someone please clarify this for me.

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89 GTA 350 - stock all the way. But came with goodies, 3.27, dual cats, alum shaft. Mods and Website coming soon!!!

 

http://www.ece.udel.edu/~davis/z28/ecm_swap_730/

This link explains how to do the MAF to SD ECM swap. I'm not sure how hard of a conversion it would be.

If you search through the archives of the TPI board, there are some discussions of why it's better. I know it's hard to search for things when you don't know what you want.

One good thread to check out is this one:

https://www.thirdgen.org/messgboard/...ML/000207.html

 

Neither one. One using both is best.

 

lol @ madmax. You even confused me with that one bro.

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-86 IROC
S-Trim, Speed Pro, AFR
this years goal: 10.50 @ 130+ mph
-=ICON Motorsports=-

 

Yeah, I'm sure he's enlightened now!
Drakar, what do you mean by MAS, am i missing something?

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'88 RS (originally 2.8)
-350, .040 over, vette alum. L98s, stock tpi.
-305 injectors & chip
-TES headers & edelbrock cat back
-3.73 gears, 700r4.
Best with 2.8-17.4@77mph
Best with 305-15.0@93mph
Best with 356-13.7@101mph
on a 2.050 60 ft.
(Damn the 2.8!)

 

Wells makes an aftermarket thick filmed MAF. the stock maf dosent restrict anything unless you have 400+ hp, so dont waste your money on an aftermarket one.

 

Friend of mine has his car wired to go from MAP to MAF in like 10 minutes. Name is John Millican over on www.sethirdgen.org


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Rob P
89RSconvtZZ4TPI
Edelbrock Hi-Flow Intake
SLP Dual Cold Air Intake
1 5/8" Headers
Semi-Siamesed Runners
MSD6AL/AdjFPR/IROC frnt@rear swaybar/wonderbar/steeringbox/alum drvshaft/ Alston SFC/3:23posi disc rear/MAC LCA/H.Adams Panhard Rod/KYB struts/ shocks/
92Z28convt5spd
71Impala convt 402BB
BETTER DRIVING THRU SUPERIOR HORSEPOWER!

[This message has been edited by Rob P (edited June 07, 2001).]

 

MAS as far as I know and correct me if I'm wrong, but it is the samething just a new name for the 4th Gen's MAF=MAS kinda like a TH700-R4 = 4L60 and 4L60E I think.

Thanks for the clear up on MAF and SD!!

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89 GTA 350 - stock all the way. But came with goodies, 3.27, dual cats, alum shaft. Mods and Website coming soon!!!

 

It doesnt matter which one is better. Swapping one over the other is really not worth your time or money for the MINIMAL gains you would get. Although I have to say a MAP system doesnt require a maf sensor (and all the friggin problems that come with it) and it's a lot easier to turn if you're into EPROM burning.

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92 Z28 5.7
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Trick Flow 23° heads, Comp Cams XR270HR-10 cam, Accel intake base + ported TPI,
TES headers, Flowmaster catback, MSD ignition, #24 SVO injectors, 1LE aluminum driveshaft.

Click here to see pics of my car !

 

For a basically stock engine with minor modifications or say a "weekend warrior" whose major mods consist of bolt on's the MAF is a very forgiving system that will automatically compensate for minor mods to intake and exhaust without custom PROM programming.

While high performance street & strip enthusiast might prefer the SD system and are able to squeeze a few more HP at the cost and time of custom programming the PROM for almost every significant mod made.

Depends on your purpose.

 

Isn't this topic dead yet??? Must we beat it some more?? And by the way I like Map eventhough I've got Maf. I'll be switching soon.

 

The benefits of MAF system include that it DIRECTLY measures air flow. Therefore modifications such as a new cam, heads, intake, etc..., the MAF sensor will be able to compensate in the resultant higher airflow. So all in all, MAF is more modification friendly. The downfall of MAF is that due to the fact there's a sensor in direct line with airflow, there's an inherent restriction to the system. But as has been pointed out, that restriction doesn't come into play until 350 to 400+ HP.

Speed Density has no inherent restriction, is easier to burn EPROM's for, and can support huge HP. The only problem is that when you do modifications that really affect airflow such as a new cam, heads, intake, then the computer needs to be recalibrated, because it calculates air flow based on Manifold vacuume, air temperature, and readings from the O2 sensor. Pick what you will, but each has it's ups and downs.

 

Hrm, i believe i agree with madmax on this one. If it was possible to get map and maf in the same application that would be the best. But for us i imagine that's a thing like overcomeing the 255 grams/sec on the maf (which is under development from what i hear. Quite a few people are working on a solution.) So i guess anything would be possible... For the sake of argument. If you have MAF, keep MAF, if you have MAP, keep MAP.

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89 IROC-Z 350 TPI

-Flowmaster Catback
-Performance Resource Chip
-700R4 (Rebuilt) Too much done to actually list
-K&N Airfilters
-Ported Plenum
-2.77 Gears (not much to brag about but eh, its there)
-MSD 8.5 mm plug wires
-Gutted cat
-!AIR
-Gutted Air Boxes

 

This topic has been beat down over and over and over again! You know, I really wish people would look into the archives more often before they post so we can avoid repeat posts like this! This is a never ending arguement! Some people like MAF and some people like SD! Anyone who says that one is BETTER than the other is full of ****! There is NOT a BETTER one... it's all matter of opinion! BOTH have pros and BOTH have cons! It's like trying to decide whether the RED apple is better than the GREEN apple! Give it up already people!

I'M TIRED OF SEEING THIS TOPIC!!

Ok... I feel better now! Thank you and have a nice day!

 

Now 86TPI.... you're sick of seeing these post cuz' you have 560 post and if you're who I think you are you got a zillion with your old name........LOL.

I bet big bucks your early post ask many questions that others were sick of talking about. We gotta' respect the fact that the asker of the question has 17 post and is probably trying to learn.

And I must be F.O.S. because I will tell you one is better than the other depending on what you are trying to accomplish with your car.

Bwaaaaaaaaaaaaahhhh.... so now let's move on to "should I remove my MAF screens", "which thermostat do I use" and "WTF does WTF stand for".

 

1. This is the only user name I've ever used on here!
2. You're absolutely right.... I didn't realize this person was a "newbie" and I shouldn't have went off like that and I apologize to the new guy/gal!
3. No, you should not remove the MAF screens because the biggest restriction lies within the stock TPI intake and not the MAF!
4. Which thermostat depends on many factors like where you live, what fan switch you have, and what works best for you! Personally, I have an adjustable fan switch and after extensive testing I can now make my car run the SAME temp with a 180 that it runs with a 160!
5. If we're gonna talk about WTF does WTF stand for then we might as well take care of LOL and LMAO while we're at it!

 

Ditto here...

M*** Air Flow sensor and M*** Air Sensor are the same thing. Just like Ford calls a differential with friction clutches a Traction Control, GM calls it Limited-Slip, and we all call it Positraction, a rose is a rose is a rose....

Some of the ricers and Fords use a Vane Air Flow sensor. Ford used a VAF on early Bosch injection systems.

LMAO, ROF, thinking WTF and WU with this acronym list...

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Later,
Vader
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"Let the bodies hit the floor!"
Adobe Acrobat Reader

[This message has been edited by Vader (edited June 23, 2001).]

 

Well now I'm really LMAO because NOW I see the original poster asked about MAF vs MAS. I saw it as MAF vs. MAP. IMHO readers like me should pay more attention and eliminate some of this BS.

 

Open Mouth, Insert Foot!

Actually, if you look at the TOPIC is says MAF Vs. Speed Density ..... Speed Density referring to MAP! What the guy was asking is if MAF is better than speed density(MAP) and if MAF is NOT better then can he switch to MAS.... MAS being what GM is calling the "NEW" MAF's

 

bwaaaaaaaaahhhh.........OK..... twenty post later.......I get it..... I'm actually gonna' have to start reading these.....LOL

 

Split the difference, and go with a carburetor No restrictions, no ECM tables to mess with, and NO sensor glitches to throw the car out of whack. All for a third the price of TPI.
So what if you get one or two less miles per gallon and you have to wait an extra minute for it to warm up in the winter.

p.s. the green apples rule

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1980 Camaro, '88 Police 350 engine, Headers, full exhaust, completely redone, my baby!
1988 Iroc-Z L98, MSD 6a, Accel coil, K+N's, Airfoil, Coolant Bypass, Flowmaster, Gears, Late model Bose, I like the 80 better

 

Noooooooooooooooooo, red apples are better

 

camaro6spd, you're on drugs!!


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1980 Camaro, '88 Police 350 engine, Headers, full exhaust, completely redone, my baby!
1988 Iroc-Z L98, MSD 6a, Accel coil, K+N's, Airfoil, Coolant Bypass, Flowmaster, Gears, Late model Bose, I like the 80 better

 

UUUMMMM I guess I hit a nerve on the board with this MAF/SD stuff , but in light of this info I will stick with MAF as it will be just fine for what I have planned. And If I make another post on these lines, just threaten me with making me drive an L4 and I will smarten up. You guys Roc thanks for all the help!!

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89 GTA 350TPI
92 RS 305TBI - Sold