MAF or speed density?
Thread Starter
Instructor
Joined: Mar 2003
Posts: 220
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From: Grandview TX
MAF or speed density?
I am just getting into the vette game and have two or three cars I am looking at to purchase. One is a 95 w/ 80K miles which I know is a MAF system, but my question is do 92s and 93s have MAF systems or are they speed density? I know that in 94 F-bodies switched to MAFs, but I dont know when vettes did. Also what are the pros and cons of speed density systems? Is 92 a good year?
Sorry for all the ?s, but I am buying one of the 3 this weekend so I need to know all about them.
thanks
brad
Sorry for all the ?s, but I am buying one of the 3 this weekend so I need to know all about them.
thanks
brad
Melting Slicks
Joined: Jan 2000
Posts: 3,418
Likes: 1
From: NW Chicago Suburbs
Re: MAF or speed density? (BooRadley)
92-93 are speed density, 94-96 are MAF'ed. The differences are only significant if you're making major mods. I wouldn't let the difference make your choice, go for the best car.
Good Luck,
Eric
Good Luck,
Eric
Team Owner
Joined: Sep 2001
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: MAF or speed density? (BooRadley)
SD systems are better for a high hp car, like over 450hp. Tuning is a little harder for them and they dont respond well to minor mods sometimes. MAF is quite good until you get to those high Hp situations.
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St. Jude Donor '03-'04
Cruise-In 1-2-3-4-5 Veteran
Re: MAF or speed density? (vader86)
MAF is more tunable, and works with realtime conditions. MAP reacts a little more slowly, and does extra number crunching to calculate the parameters it needs from the MAP and ECT data.
MAF is better until you start needing to suck so much air into the engine that the physical size of the MAF becomes your limiting restriction.
In 1994, the engine management changed from multipoint injection to sequential injection. Sequential injecton has a better 'coolness' factor - it's better for emissions and fuel economy, and more elegant.
MAF is better until you start needing to suck so much air into the engine that the physical size of the MAF becomes your limiting restriction.
In 1994, the engine management changed from multipoint injection to sequential injection. Sequential injecton has a better 'coolness' factor - it's better for emissions and fuel economy, and more elegant.
Former Vendor
Joined: Jun 2001
Posts: 7,204
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From: St Marys PA
Re: MAF or speed density? (Matt Black)
:banghead: :banghead: :banghead: :banghead:
I suggest you go here and read these links, Afterwards you will probably know more than most people do about the way the systems work and your eyes feel like they are gonna fall out of your head. :D But you will be one smart ****, if you can get through it and understand it all. http://www.thirdgen.org/techbb2/show...hreadid=174742
I know my hand hurt from typing the past few days. Its really quite infomative! You will see a bunch of people that were dye hard SD freaks, change their tune real quick.
Regards,
:cheers:
[Modified by ski_dwn_it, 3:42 PM 4/23/2003]
I suggest you go here and read these links, Afterwards you will probably know more than most people do about the way the systems work and your eyes feel like they are gonna fall out of your head. :D But you will be one smart ****, if you can get through it and understand it all. http://www.thirdgen.org/techbb2/show...hreadid=174742
I know my hand hurt from typing the past few days. Its really quite infomative! You will see a bunch of people that were dye hard SD freaks, change their tune real quick.
Regards,
:cheers:
[Modified by ski_dwn_it, 3:42 PM 4/23/2003]
Thread Starter
Instructor
Joined: Mar 2003
Posts: 220
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From: Grandview TX
Re: MAF or speed density? (ski_dwn_it)
Thanks guys for all the help. I think that I am going to buy the 92. It only has 60K miles on it and it is pretty cheap so...
Well thanks again,
brad
Well thanks again,
brad
Le Mans Master
Joined: Oct 2000
Posts: 6,362
Likes: 30
From: Oak Harbor WA
Re: MAF or speed density? (BooRadley)
You might want to look at what option "RPO" numbers each one has. I would opt for a '95 if really given a choice because of the Opti issue, PCM is flashable, 13" brakes are standard, drivers door has express down window, and all the parts are 3 years newer. :) And I have a '93 since sigs aren't working right now.
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Thread Starter
Instructor
Joined: Mar 2003
Posts: 220
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From: Grandview TX
Re: MAF or speed density? (silver & red CE)
What the hell is a RPO #? Is it like rear end gears and other options on the inside of the door? Sorry for the stupid question, but I have been a mustang/F-body guy my whole life so this will be my first vette.
thanks
brad
thanks
brad
Drifting
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From: Olathe, KS USA
Melting Slicks
Joined: May 2001
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From: San Diego CA
Re: MAF or speed density? (BooRadley)
Given equal condition I'd go for the 95 with 20K more miles (80K is nothing, really). There were many subtle improvments in those years. Not the least of which is the better optispark (LT1speak for distributor).
Unless the 92 is a killer deal. That might swing it.
Rule of thumb, get the newest best condition Vette you can afford.
Unless the 92 is a killer deal. That might swing it.
Rule of thumb, get the newest best condition Vette you can afford.
