budvol

speed density? And thats bad enough for me to forget about this car at 3000.00?

PredatorZ28

alot of people like 93s better cause of speed density i guess there faster or something dunno

Silvershark

Yah I dunno. I picked up my 94 LT1 for 3800. The owner said it has a "small" oil leak. The oil leak was the rear main. Needless to say it was 1 quart of oil a day... Small my ****. Now I am rebuilding it because I felt just replacing the seal wasnt good enough.

So I am almost done tearing it down and ordering forged internals. How one thing leads to another...

Seal

oh def not!

alot of track queens dont even use the MAF, they are mostly speed density cars, some ppl even disable the maf turning it into a speed density car when they tune!

but speed density is like a low tech version of maf

unless ure gunna do heavy modding u probably wont care...

also thing with 93s is tuning... they use EPROMs, which involves reprogramming the chip in there... compared to FLASH tune which is much more simple....

if its gunna be a bolt on car, u're good

BoobSter-lt1-z

what do you mean by the car being speed density?

slopokrodrigez

93's were the last year to use a method of controlling the engine in which it does not use a mass airflow sensor. The MAF, as you know, directly measures the flow of incoming air into the intake and therefore is the prefered method for more accurate control of engine fuel and ignition. The method refered to as speed density uses an entirely different computer algorithm to control the firing of injectors and ignition than the more modern type with a MAF.

One other drawback to 93's were that the injectors were batch fired instead of sequential. That means that they did not fire individually when the associated piston reached the appropriate point in the cycle. Instead groups of injectors fired at the same time regardless of were the piston was.

However, that being said, it is the feeling of several people that the size of the MAF is a restriction to a more free flowing, deep breathing performance engine and therefore many Hi-po engines use speed density as the main method of controlling the engine. As for the injector firing, that is something that can be changed for the better.

If I were you, I would further research the asking price of Z's in your area. If it turns out the 93 is still a good value, go for it. But check over the car as I mentioned before with a very critical eye.

Dave