I have heard of some people switching their MAF cars over to speed density and was curious when is this better than the MAF system if it is at all? The reason I'm asking is ever since my storker build my car has run like pure crap and I dont know what to do other than drop $500 in Carolina Automaster's Lap and see what they can do. I have a MADz28 tune but I dont know if the tune needs adjusted of if something is wrong with the motor. I know I have a bad MAF connection but I dont know where to get parts to put new pins in the connector. Even with teh MAF working the car runs really bad and the tach is all over the place.

 

Most of the time the cars get switched to "speed density" because that's how all the aftermarket computer systems (FAST, DFI Gen VI and VII) run.

I can't think of anyone who switched a stock MAF system to a stock speed density system though.

 

I switched my speed density to a Maf and it runs better.

 

Alot of the high horsepower 93 guys are switching there SD to MAF and going with the bigger Z06 MAF sensor. The MAF is easier to dyno tune and gets better results IMO expecially in the OBD1 cars.

 

Tell that to the PCM For Less chip guy.

The high HP 93 Guys I've seen are still running..........the stock speed density or an aftermarked "speed density" DFI system.....noticing a pattern???

A maf is just one more thing to go wrong. With speed density, there is no maf to fail, and if you know or have the ability to calculate out the proper points for the VE tables, you can easily run better than a MAF car. Problem is that there aren't too many people who are skilled at doing so.

 

I had one of their chips before I did the swap.

 

Did you ever do any datalogging and tuning with it, or was it a one time chip??? Do you have any idea how hard it is to try to nail down VE tables without any feedback on what the car is doing?? NObody is perfect either. I've seen quite a few people who have been more than pleased with a chip in a 93 and had no problems.

Fact of the matter is, that stock for stock, the systems don't offer any gain over each other. They've both got ups and downs, but when it comes down to it neither is superior to the next.

It DOES kind of make you wonder when you notice that all the aftermarket DFI systems are speed density systems though.

I'll admit, the maf cars are easier to dyno tune, but if your map takes a crap and your car has to rely on stock VE tables, you're not going to be a happy camper.

 

It was a one time chip. I'm not badmouthing them at all, Alvin was willing to work on it with me, but it was easier and cheaper to swap to a Maf and have a local guy do the tuning.

 

The MAF vs. MAP debate can last for years, Just look at Thirdgen.org and you can see it is a very very touch Subject. There have been Plenty of cars Run Great times with both systems, The MAF system is more forgiving With bolt on's to a less experianced Tuner But for those who want Every option for tune the MAP system has better control options but requires a better knowledge to do so. Each system has it's user specific Benifits. Each Factory System can be modified using TunerPro, TunerCat ect. With knowledge of assembly language you can write you own sorce code for The factory ECM's and the possiablites are almost endless, Just takes Time to learn hands on. Learn to Scan your vechicle, and if you are talking ODBI Maf or Map Learn to do your own chips, I burn my own chips and I have about $250 in everything. TunerPro R/T Tuning/Scaning software (free), Memcal adapter for ECM ($55.00) Chip Burner ($85.00, Moates.net) ALDL cable (built my self using Schmatics on Thirdgen.org $6.00) Used LapTop ($75.00) Being able to tune my own chips as many times as I like till it is to my satsfaction PRICELESS..

Just my 2¢