Speed Density vs. MAF

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Sep 23, 2001 | 09:29 PM

#21

Raysur

Thread Starter

Safety Car

Joined: Jun 1999

Posts: 3,641

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From: Southern California

Re: Speed Density vs. MAF (89vette)

This is very good info:cool:. I'll check out the LT1 software thanks.

Sep 24, 2001 | 05:42 AM

#22

Kevin 88

Instructor

Joined: Jul 2001

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From: Torrance CA

Re: Speed Density vs. MAF (ChrisB)

ChrisB,

Do you have, or can you point me to any documentation on the LT1 style MAF?
Thanks, kevin999@mindspring.com

[Modified by Kevin 88, 3:45 AM 9/24/2001]

Sep 24, 2001 | 12:14 PM

#23

JR_VETTE

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Joined: Apr 2001

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From: Saint Augustine, FL

Mid-TN Events Coordinator

St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16

Re: Speed Density vs. MAF (89vette)

Quote:

With my 396, I have experiance with both. I am currently running SD and I like it. Throttle response is very quick. Almost explosive. Starts alot faster also. The SD is easier to tune for modified motors IF and only IF you do all the testing and tuning yourself. It's jsut about impossible for a mail order tuner to get a SD program right on a modified motor. Starting in 94, Vettes has a MAF and a MAP sensor. They combined both for the best of both worlds. For your 93, I would keep what you have and maybe look into doing your own tuning. LT1 Edit is a nice program I hear.

Jason

Just as an observation. LT1Edit does not work with 1993 and earlier LT1's. For those, you will need to use tunercat (which is what I use).
http://www.tunercat.com

There might be others, but I found it's by far the best (and cheapest). Of course you will also need a EPROM programmer as the 1992/1993 ECM's were not flashable.

Sep 24, 2001 | 12:33 PM

#24

89vette

Melting Slicks

Joined: Aug 2000

Posts: 2,388

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From: Murrysville PA

Re: Speed Density vs. MAF (jreed99)

Thanks for the clarification. I didn't know that. I use Tunercat for my tuning also.

Jason

Sep 24, 2001 | 12:44 PM

#25

Raysur

Thread Starter

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Joined: Jun 1999

Posts: 3,641

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From: Southern California

Re: Speed Density vs. MAF (89vette)

I just noticed the LT1 editor wasn't for my car. Thanks for the info.

Sep 24, 2001 | 01:15 PM

#26

ChrisB

Pro

Joined: Jun 2001

Posts: 697

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From: College Station Tx

Re: Speed Density vs. MAF (Kevin 88)

Quote:

Do you have, or can you point me to any documentation on the LT1 style MAF?

How's this: http://shared.slowcar.net/Frequency%20MAF.pdf

if you need any of the transfer functions from the pcm let me know also.

Sep 24, 2001 | 01:40 PM

#27

Beach Bum

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Joined: Feb 1999

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From: Little Elm TX

Re: Speed Density vs. MAF (ChrisB)

Are there any direct bolt-on high flow MAF's for my 85 ?? I think I've heard of a weller or something before.

If yes, I would assume a new chip would be in order ?

Beach

Sep 24, 2001 | 03:17 PM

#28

vette_tweak

Racer

Joined: Jul 2001

Posts: 399

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From: Toronto Ontario

Re: Speed Density vs. MAF (Beach Bum)

I've witnessed a 420CID 88 L98 dyno'd at 540 HP(crank) with a gutted 88 MAF. I'm sure there is some power to be gained by removed the MAF but I can't see it being more than 10HP.