AUTOTHORITY MAF SETUP?

LUCKYJACKASS · 09-09-2009, 05:41 PM

I have already purchased a used Autothority MAF sensor with cold air intake and chip set. I bought it a month after I bought my 951, and it has been sitting in the box since then. I have read some discouraging things about Autothority stuff and am wanting some feedback from anyone using the setup. I am doubtful that this will add 88 hp per Autothority's claim. Does anyone out there run this setup? If so, what is your opinion of the product? I know we are not to bash any manufacturer here, but I am just looking for feedback as to what I should expect if I install this on my stock '86 951. I won't be doing it any time soon, as I am currently dealing with a garage bound car - see my post '86 951 won't start.
Any feedback is appreciated. Thanks.

Jeremy Himsel · 09-09-2009, 05:59 PM

Install it on a stock 951, run the autothority boost method (banjo bolt), and always use 91 octane and you'll be fine. It's not the greatest system anymore and can be dangerous when running elevated boost levels but for a mild performance upgrade it's not bad if you already have it. The chip get rich in the middle and lean on top so monitor boost closely.

Save up some cash and upgrade to a Vitesse unit in the future if you want great A/F ratios and turbo flexability.

minho78 · 09-09-2009, 06:02 PM

Jeff I'm running the Autothority Maf. It runs fine if you bought it from Autothority. Be aware that some of the Ebay stuff may not be the right setup. It happened to me and then I had to get a couple of new parts from autothority. I'm actually just going through a blown headgasket but the problem was that it was 17 year old gasket. Once I get done with this problem, I'm going to install the Wide band setup to check the A/F ratio(I got the AEM). I would recommend doing this.

sebastian944 · 09-09-2009, 06:50 PM

i'm running it and i had no problems.

choinga · 09-09-2009, 07:09 PM

+1 for Vitesse.

I read a lot on MAF's before buying the Vitesse system and recall quite a few threads from folks running your system with no problems. As mentioned, there's little/no tunability and the chips run lean up top which is exactly where you don't want them to run lean so make sure you put in an aftermarket boost gauge and a wideband AFR otherwise your next search will be "blown headgasket".

joe_951Turbo · 12-28-2009, 12:20 PM

Anybody have the instructions? I bought one cheap, but I have no idea on the installation from stock.

minho78 · 12-28-2009, 01:36 PM

Guys be aware. I'm in fact running very lean and I bought it straight from Autothority. Please make sure you have a AFR gauge. I'm not going to tell you guys what to do but if I had to do it again I would buy from Lindsey or Vitesse.

schip43 · 12-28-2009, 02:40 PM

Maybe the issues with the Autothority MAf can be addressed with a modern piggy back?

toddk911 · 12-28-2009, 03:02 PM

Yea, any piggy back or better chips will richen up the top end. Like others have said, not a bad set up per se, just very out dated now.

mudbuddha · 12-28-2009, 03:56 PM

I have had APE MAF system for a while now- no issue with the 2.5L. I did have them tune the MAF system for my 3L though and again, no issue at 20+ lbs of boost.

minho78 · 12-28-2009, 09:20 PM

Joe I have them somewhere.They are bad but I'll see if I can give you a link.

dillon410021 · 12-28-2009, 10:18 PM

Quote:

Originally Posted by toddk911

Yea, any piggy back or better chips will richen up the top end. Like others have said, not a bad set up per se, just very out dated now.

can you run new chips with the autothority maf like max chips. will max chips work with the autothority maf

toddk911 · 12-29-2009, 10:32 AM

Quote:

Originally Posted by dillon410021

can you run new chips with the autothority maf like max chips. will max chips work with the autothority maf

Yep. Any chip can be made to match your set up. It will not be a true "MAF" chip, but will work better and be safer a/f than the chip that came with the Autothority.

Or just get a piggy back tuner and can just richen it up as you need it. But that would require wideband.

DanaT · 12-29-2009, 10:50 AM

Lucky,

To answer this is a different way. The PO of my car installed a K27/6 and an Authority MAF system before I bought the car. I bought my 951 in '98 so its been running around on AutoMAF for more than a decade and the car will hang with most street cars around here. It has been fine. Maybe not the newest and best but functional.

That said, I am on my quest for more power. I have a complete Vitesse system going in the car. I will likely put on a Vitesse Camshaft and Turbo to go along with this. I want a nice streetable 350-400rwhp if I keep the 951. I just wanted more than the Authority system could provide. But leaving it on for more than a decade should say something...

-Dana

toddk911 · 12-29-2009, 12:26 PM

Quote:

Originally Posted by DanaT

Lucky,

To answer this is a different way. The PO of my car installed a K27/6 and an Authority MAF system before I bought the car. I bought my 951 in '98 so its been running around on AutoMAF for more than a decade and the car will hang with most street cars around here. It has been fine. Maybe not the newest and best but functional.

That said, I am on my quest for more power. I have a complete Vitesse system going in the car. I will likely put on a Vitesse Camshaft and Turbo to go along with this. I want a nice streetable 350-400rwhp if I keep the 951. I just wanted more than the Authority system could provide. But leaving it on for more than a decade should say something...

-Dana

Great points Dana!

And real world evidence that the MAF is of little importance relative to the tuning and/or turbo.

Which begs the question "if anyone is spending over $150 for the MAF alone...STOP!!! lol Your money should be on the chip/PB/turbo and not the MAF itself.

09-09-2009, 05:41 PM	#1
LUCKYJACKASS Addict Rennlist Member Join Date: Oct 2008 Location: Vegas baby! Posts: 70	AUTOTHORITY MAF SETUP? I have already purchased a used Autothority MAF sensor with cold air intake and chip set. I bought it a month after I bought my 951, and it has been sitting in the box since then. I have read some discouraging things about Autothority stuff and am wanting some feedback from anyone using the setup. I am doubtful that this will add 88 hp per Autothority's claim. Does anyone out there run this setup? If so, what is your opinion of the product? I know we are not to bash any manufacturer here, but I am just looking for feedback as to what I should expect if I install this on my stock '86 951. I won't be doing it any time soon, as I am currently dealing with a garage bound car - see my post '86 951 won't start. Any feedback is appreciated. Thanks. __________________ Jeff Helms Current vehicles: '86 951 Gold and stock '94 Cherokee '72 Ranchero - stock 351C Past Honorable mentions: '94 Saab 900 turbo convertible '83 & '87 Thunderbird Turbo Coupes '65 Mustang Coupe - 289 .30 over with orig carb and 3 speed '71 Monte Carlo - 350 w/ headers and holley 650 '86 Buick Skyhawk 1.8 Turbo '94 and '00 Nissan 4WD Ext cabs '64 Tempest I-6 4 door - my first car! '71 VW Squareback - taken by city of Daytona - bastages!

09-09-2009, 05:59 PM	#2
Jeremy Himsel Addict Rennlist Member Join Date: May 2002 Location: Phoenix, AZ - NJ Runaway Posts: 3,430	Install it on a stock 951, run the autothority boost method (banjo bolt), and always use 91 octane and you'll be fine. It's not the greatest system anymore and can be dangerous when running elevated boost levels but for a mild performance upgrade it's not bad if you already have it. The chip get rich in the middle and lean on top so monitor boost closely. Save up some cash and upgrade to a Vitesse unit in the future if you want great A/F ratios and turbo flexability. __________________ 86 951 - Heavily Modded - Starting On Round Two. 83 944 - Spec Car Project/Money Pit - Project dying of old age..... 2002 - 405 HP Stock (sort-of but not really) Cup Holder 2005 - Tow Rig/Kid Hauler/Snapper Holder E-Mail - Sales@stillwaitingforthosedynocharts.com WARNING: Be careful of the advice you accept......There are idiots lurking among us.

09-09-2009, 06:02 PM	#3
minho78 Addict Rennlist Member Join Date: Apr 2009 Location: Westchester NY Posts: 405	Jeff I'm running the Autothority Maf. It runs fine if you bought it from Autothority. Be aware that some of the Ebay stuff may not be the right setup. It happened to me and then I had to get a couple of new parts from autothority. I'm actually just going through a blown headgasket but the problem was that it was 17 year old gasket. Once I get done with this problem, I'm going to install the Wide band setup to check the A/F ratio(I got the AEM). I would recommend doing this. __________________ Manny 1986 951 White

09-09-2009, 06:50 PM	#4
sebastian944 Addict Rennlist Member Join Date: May 2008 Location: Toronto, Canada Posts: 845	i'm running it and i had no problems. __________________ 86' 951 PowerHaus K27DR Autothority MAF / Stage II PH Chips /Eibach Coilovers /PH srut bar / Hollowed out torsion bars /28mm sways /Adj. Koni's / PH 928 S4 slotted brakes Helmsman: "She'll fly apart." Capt. Hikaru Sulu: "Fly her apart then!"

09-09-2009, 07:09 PM	#5
choinga Addict Rennlist Member Join Date: Dec 2008 Location: Austin, TX Posts: 980	+1 for Vitesse. I read a lot on MAF's before buying the Vitesse system and recall quite a few threads from folks running your system with no problems. As mentioned, there's little/no tunability and the chips run lean up top which is exactly where you don't want them to run lean so make sure you put in an aftermarket boost gauge and a wideband AFR otherwise your next search will be "blown headgasket". __________________ 1987 Guards Red 951 - SFR 3" exhaust, Vitesse MAF w/ 83# injectors, Tial 38mm, Lindsey MBC, Spec Clutch w/ Fidanza flywheel, Big Brake Kit w/ Drilled Rotors, Koni shocks, 17" Michelin PS2's on Fikse FM5's, Saratoga Sunroof.

12-28-2009, 12:20 PM	#6
joe_951Turbo Addict Rennlist Member Join Date: Aug 2009 Location: Harrisburg, PA Posts: 60	Anybody have the instructions? I bought one cheap, but I have no idea on the installation from stock.

12-28-2009, 01:36 PM	#7
minho78 Addict Rennlist Member Join Date: Apr 2009 Location: Westchester NY Posts: 405	Guys be aware. I'm in fact running very lean and I bought it straight from Autothority. Please make sure you have a AFR gauge. I'm not going to tell you guys what to do but if I had to do it again I would buy from Lindsey or Vitesse. __________________ Manny 1986 951 White

12-28-2009, 02:40 PM	#8
schip43 User Join Date: May 2009 Location: Carson City NV Posts: 214	Maybe the issues with the Autothority MAf can be addressed with a modern piggy back?

12-28-2009, 03:02 PM	#9
toddk911 Super Member Rennlist Member Join Date: Apr 2002 Location: NAS PAX River, by way of Orlando Posts: 9,033	Yea, any piggy back or better chips will richen up the top end. Like others have said, not a bad set up per se, just very out dated now. __________________ toddk911@earthlink.net 1987 951, 20psi, LR Super 75, MAX Chips, 72# inj, Walbro pump, SAFC2 Neo, Hitachi 90mm MAF, TIAL, Zt-2, ARP studs, MLS HG, Evo DV, Custom 3" cat (less) back, Flowmaster, Koni yellows, Welt. 250lb springs,Turbo S torsion bar, Blaster SS coil, headers/DP/Xover- ceramic coated...soon to install H2O Injection "That which does not kill our cars, makes them go faster" Previous: 1983 944 (6 years) 1986.5 928S (2 years)

12-28-2009, 03:56 PM	#10
mudbuddha User Join Date: Aug 2005 Location: Clarksburg, Maryland Posts: 142	I have had APE MAF system for a while now- no issue with the 2.5L. I did have them tune the MAF system for my 3L though and again, no issue at 20+ lbs of boost.

12-28-2009, 09:20 PM	#11
minho78 Addict Rennlist Member Join Date: Apr 2009 Location: Westchester NY Posts: 405	Joe I have them somewhere.They are bad but I'll see if I can give you a link. __________________ Manny 1986 951 White

12-29-2009, 10:50 AM	#14
DanaT User Join Date: Jan 2002 Location: Boulder Posts: 607	Lucky, To answer this is a different way. The PO of my car installed a K27/6 and an Authority MAF system before I bought the car. I bought my 951 in '98 so its been running around on AutoMAF for more than a decade and the car will hang with most street cars around here. It has been fine. Maybe not the newest and best but functional. That said, I am on my quest for more power. I have a complete Vitesse system going in the car. I will likely put on a Vitesse Camshaft and Turbo to go along with this. I want a nice streetable 350-400rwhp if I keep the 951. I just wanted more than the Authority system could provide. But leaving it on for more than a decade should say something... -Dana