firehawk68mcleod

iTrader: (2)

SO im getting back and forth answers ... yes speed density the only way to go FI... Then im getting MAF is the only way to go for drivabilty and climate changes .. so which is it? IM running a forged ls2 gto engine with a d1 procharger with a 3.4 pulley... 15-18 lbs of boost exspected... SHould i run speed density? keep in mind i only want to street my car.. this engine is going into my 68 camaro... also, if i do go the SD route... what will i need to by and do to run it on my ls2 harness? thanks

Bob@BruteSpeed

iTrader: (16)

The maf is maxed out around 450 rwhp or so, and the tune then is basically speed density after that. You might as well ditch the maf, it will look much cleaner without it. With a good SD tune, you won't have any problems with it. Get in touch with John at Speartech http://www.speartech.com/ for what you need for your harness. Bob

98Z28CobraKiller

iTrader: (17)

What computer are you intending to run? If stock, out of what year, make and model vehicle? Some of the newer PCMs are far more difficult/complicated to run in SD. If you haven't already spent the money on a computer, tuner and harness, you may want to look hard at some of the aftermarket setups.

Snyper

iTrader: (27)

If you tune it yourself SD is absolutely the way to go. Im running OLSD and I wouldn't go back.

nodrok

Not sure about your car, I just needed to get a IAT sensor because mine was built into the MAS. I had to relocate it as well but that was because of the meth. This is a truck though just giving you an example. Sensor cost me about $30 and soldering 2 wires.

LS1RedZ

iTrader: (19)

Im about to go from a MAF tune to a SD tune. I say just do SD.

barnat

iTrader: (59)

If you going with a 2 bar and have no plans of running more then 13psi,,, i go with the 2 bar SD tune like i did. It drives and feels stock untill i mash it LOL My tunner told me the 3 bars are alittle harder or trickyer to tune with down low with ideal and such issues. Now this was awhile ago and i think they have some really nice map sensors out there now from what ive heard if looking for more boost and go with a 3 bar... but 2 bar GM colbalt SS map sensor is what im running now and like i said,,,feels and drives like a stock IMO

madmax4499

iTrader: (3)

what would the best 3 bar "high quality" be?

Beaflag VonRathburg

iTrader: (176)

I remember reading a while ago about the MAF cards, but don't remember any of the specifics around them.

qqwqeqwrqwqtq

Actually, that would be alpha-n.

I recommend speed density.

kkslds

iTrader: (59)

http://forums.corvetteforum.com/c6-f...-maf-bung.html

1,002 rwhp with a MAF
https://ls1tech.com/forums/forced-in...6-numbers.html

Unfortunately Dallas Performance isn't a sponsor on here as far as I'm aware of to share a little more information with us. I haven't been able to find much information about these Maf's either, but my car is tuned SD right now and it runs awesome. The only complaint I have is on cold start up when in open loop it is really sensitive. It idles real rich around 10.5 ish until it switches to closed loop then it's fine and stays idle right around 14.7. If I touch the gas pedal when its in open loop it starts surging real bad and wants to die. My car is on E85 with 81# injectors and I've heard that its just the "nature of the beast" when using E85. Some may say its a tuning issue, but im around 16 pounds of boost on a bone stock long block so I can't complain to much. Been this way for about a year now.

I have been searching for more information on these card style maf hoping it could be the solution to my problems. Mr. Big runs one and makes 1,002 rwhp, so surely I wouldnt have any issues with a little maxed out d1sc.

Lingenfelter and TSP also make MAF with card style sensors. If anyone has more information on these pieces in conjunction with boost, please share your experiences.

slow67

iTrader: (2)

The issue in most cases for the LSx PCM, isn't the MAF itself, its the PCM. The table doesn't accept values high enough for the amount of fuel needed. The newest E38 and E67 ECMs are different, their tables go much higher.

kkslds

iTrader: (59)

Around post #9 on the second link I posted, something was said about it being maf and sd tune... It said the maf is in place for drive ability and the sd takes over when in boost (how i interpreted it anyway).

Is my pcm (02 fbody) capable of doing a mixture of the two?

ChevyChad

iTrader: (50)

No, yours cant do that. Since he has a C6, he has either the E38 or E40 PCM. You don't have the capabilities he does. None of the 4th gen fbodys do.

NemeSS

iTrader: (127)

What about the trucks pcm?
Shouldn't they have a greater Maf capability all ls trucks came with the integrated iat in the 85mm Maf

firehawk68mcleod

iTrader: (2)

So would i be safe with my e40 computer.... i want to only street my ls2.... could i just upgrade my maf and tune my computer... do u think it would be and support 800hp ish .... at 15 to 18 lbs of boost.

Midnite Magic

It all depends on the tuner, but I prefer SD for boosted apps