Goosecaddy05

I need a new maf and intake to help free up an intake restriction i have on my motor... I've got a volant 3.5" with a 85mm stock ls6 maf on my 418 and the map kpa drops from 101 to 91 kpa at wot... i'm thinking the texas speed maf is the one to go with since it has a screen in it and it should help with my irratic idle and part throttle drivability with this monster cam i have... what do you guys think?

01ssreda4

iTrader: (96)

Go SD!!!!!

Goosecaddy05

from what i've seen SD does not compensate for change in weather, so if say i get tuned on sd in summer, then when winter comes along it wont run any stronger vs a maf tune that will and here in atlanta we have a huge difference in weather between seasons... i doubt i'd gain that much over maf tunningwith SD either and my cam is not so big that it really needs it either

01ssreda4

iTrader: (96)

I have the same climate as you where I live. Its fine, you wont be able to tell you don't have a MAF, plus you save money, lose an intake restriction, one less sensor to fail, and your car is a tad easier to tune. The point of all this is to go faster right? Give me all your arguments for keeping the MAF! Go!

Cstone812

iTrader: (5)

Both of those are an absolute waste of money. Search how to make a custom ls7 maf. It involves buying a 4" spectre aluminum pipe on Amazon with a slot for a Maf card,ls7 maf card, wire harness to convert it all, and a honeycomb screen from Saxon pc. It costs about 100 bucks and is the absolute best way to go.

scotty2000ss

iTrader: (2)

Is that what you did?

Cstone812

iTrader: (5)

Yes it is. Doing this or just going speed density is the best way to go imo. Id ask the tuner what he would recommend doing before hand. But buying those big expensive maf sensors are a waste.

Goosecaddy05

so the tube will be $90 or so, the maf card $90, then the filter at 40-60 then a 90* tube and couplers and clamps... no way will i get away with only paying $100 for all or it and if it makees it easier to install i may as well get the tsp 100mm maf that comes with a card anyway...

Cstone812

iTrader: (5)

Dude I just bought all the pieces not too long ago it doesn't cost any more than 105 dollars. And a brainless monkey could put it together.

Goosecaddy05

ok that's what i'm doing then, that's a way better deal than the pre built maf+ everything else. Thanks alot for steering me in the right direction, i just hope this solves my intake restriction... my fast 92 is ported so i should be ok there, but my tb is still the stock 90mm and i caan't find a 92mm nick williams that is drive by wire and i've never heard of anyone running a 100mm tb on a 92 mm intake... it wont work right?

Rise of the Phoenix

iTrader: (27)

Save your time and money and go SD. SD here and the car drives great regardless of temperature. Make sure the tuner knows what he's doing and you'll be fine.

Cstone812

iTrader: (5)

Or get what I said and have a good tuner put a SD/MAF tune in the car for even better drivability.

dr_whigham

iTrader: (49)

Go speed density and don't look back. What's with this weather you're worried about? You have an IAT sensor. Only thing that matters is altitude.

I was dropping from 100 to 96 or 96 and it was worth 8/5 to the tires. You going all the way to 91...? Yeah, you'll be picking up power.

I vote speed density

Goosecaddy05

I'll talk to my tuner about it. I know he's not a fan of it because he has said as much before, but i doubt he'll want to go that route... Will the speed density help with the restriction or is it more for making the car easier to tune? His tunes are pretty spot on i'll post up a dyno sheet to let you look at it... very very smooth tq curve with no smoothing correction... He likes to use timing more than afr to make power because he does not trust the pump gas now to be consistent, but the tune definately has allot of timing... i looked at the log of the pull and its showing 30* at 4k then it ramps up by half points to 32.5 at 6800... i wonder if he's using the timing to hold onto power due to the restriction, or maybe because with my static compression and cam ivc my dynamic is low at 7.8 dcr? Here is the dyno at his shop

Goosecaddy05

where you see the hp flatten is where it starts reading 91 kpa on the map

ringram

And atmospheric is what BARO and MAP measure, so there is ZERO reason to prefer MAF over SD for high performance.

I have run SD for 10 years, zero issues and often put down more power than any others with similar mods.

SD has no constraints over intake design.

scotty2000ss

iTrader: (2)

I wish I could go SD here in NY but seeing I'll always have a DTC present I'll always fail inspection

1970camaroRS

iTrader: (8)

Another vote for SD. I live in the Puget Sound, Washington area where the weather changes by the minute. No issues with the tune being off. I use a wideband and I'm an obsessive tune-a-holic...there really isn't a great reason to use a MAF imho unless you're climbing from -200 ft. to +10,000 ft. everyday.

Goosecaddy05

what is the benefit to it though? am i going to see a lower restriction than i would with a maf? i doubt the card slot 4" tube will cause any more of one than without it right? my tuner has the tune really nice as is driviability wise... i can almost let it idle on its own in 1st gear without it surging and its pretty smooth everywhere else... only time it might be a tad rough is when its really cold and just getting running... if sd is what people recommend for drivability than its not gonna help me much... Will i see a big HP gain over a maf tune? If so about how much usually?

Rise of the Phoenix

iTrader: (27)

If your tuner doesn't want to tune SD, maybe he aint worth a **** and you need to find someone else. No reason in the world a SD tune won't work for you. I guarantee that you have a guy like Geoff tune two identical cars, one MAF and the other SD, and after driving both, you won't be able to tell the difference. Using Geoff is just an example. Thousands of guys are good tuners who could do a great job.