Thread: MAFless tune?
21-08-2006, 02:40 PM #1
OK what does it exactly do ? BEsides give more power,
And what do they do in a MAFless tune?
21-08-2006, 03:12 PM #2
All good i found out thanks to "LS1edit.com.au"
LS1 Edit MAFLESS TUNE is normally favoured by those with competition applications in mind, where the stock maf tube and airbox can be replaced with a full ram air intake system. It puts your otherwise stock Commodore in 'HSV GTS' mode, and allows fine throttle response tuning.
LS1 Edit MAFLESS TUNE requires your vehicle be present on our premises for a complete day, while we remap volumetric and ignition curves to get the best power and driveability from your vehicle. MAFLESS TUNE also requires indepth transmission calibration on automatic transmission equipped vehicles. Specific areas of tuning will include -
VOLUMETRIC EFFICIENCY AND POWER ENRICHMENT
ALL RELEVENT IGNITION TABLES
CAT OVERTEMP PROTECTION RECALIBRATION
MAXIMUM TORQUE/ TORQUE MANAGEMENT RESEST
TRANSMISSION SHIFT CONTROL (auto cars only)
SPEED LIMITER (VU series or UAE vehicles)
FAN SPEED SWITCHING
MAF ERROR CODE REMOVAL
21-08-2006, 10:42 PM #3
yup.. enables you to get rid of the mass airflow meter - commonly seen as a big restriction in the intake. Also anebles you to easily run an over the radiator CAI or a larger MAF pipe (between airbox and TB)
HSV GTS runs mafless.. they shoulda come out that way from the factoryi'll break in your house, grind my feet on the couch...its how i'm livin' - fcuk your couch.. i'm rick james bitch!
21-08-2006, 11:02 PM #4
I ran 240kw at the wheels with a MAF tune in my ute.
Just depends what you want to do I suppose. If you are just getting headers/exhaust and a tune then I'd suggest you leave the MAF on. If you are going to be installing a cam, doing the heads, stroker, turbo, supercharger, etc then go for the MAFless.
There is no doubt that the MAFless tune is the way to go if you want all-out power but there is some small sacrifice to be made when it comes to low-down driveability if you live in a humid climate.Thomas Oliver Woods 16/05/40 - 20/08/07You will always be with me Dad
21-08-2006, 11:04 PM #5
humid?? i'm in melbourne so humidity is the last of my worries
i'm looking at going MAFless as i would like to fit an OTRCAI, as well as eventually doing heads and turbo.. Its all about getting it ready for the good stuffi'll break in your house, grind my feet on the couch...its how i'm livin' - fcuk your couch.. i'm rick james bitch!
22-08-2006, 09:51 AM #6
You're spot on with what you want, but there are those out there who will be happy with just the basics.
Like I said, it depends on where you live. Up here in NQ it's pretty muggy in summer so unless you are going all-out you tend to get better driveability (and economy) with a MAF tune over MAFless.
Anyway, I'm just pointing out that it's not necessary to go MAFless to get good power from a stock engine. I pulled 238.5rwkw on my first tune with nothing more than a 4" HSV MAF tube, a set of pacemaker comp headers (4 into 1's) and a twin 2 1/2" custom stainless exhaust.
In the end, it's ultimately your choice though.Thomas Oliver Woods 16/05/40 - 20/08/07You will always be with me Dad
22-08-2006, 01:46 PM #7
those are some nice figures!
my car currently has twin 2.5" cat back and SS reductions cai which i'll be hooking up to a 2 hole mcai shortly, as well as pacie tri-Y's.. since my car has that odd ribbed MAF pipe, would i get much (if any) improvement by going to the 4" MAF pipe before a tune???
If so, whats the cost of one of those?i'll break in your house, grind my feet on the couch...its how i'm livin' - fcuk your couch.. i'm rick james bitch!
22-08-2006, 07:58 PM #8
Make your own pipe!
you can easily make your own pipe from either a bit of stainless from Reece's or some 4"downpipe (pvc). If you need to shape the pvc just heat it up gently and you can shape it to suit. 4" toilet pan joiners make great joiners. You can get two joiners from one by cutting it in half.
Here's a pic of mine to give you an idea.
The 4" pipe is a 4"(100mm) 90o bend...trimmed a little off one end to suit the angle.
I will eventually look at getting rid of the rest of the flexible joiner.
Last edited by Da Burb; 22-08-2006 at 08:01 PM.Best wishes
22-08-2006, 08:48 PM #9
The HSV pipe was $120 when I bought it (12 months ago). From memory, if you go MAFless, you need a special boot that goes where the MAf used to be and that costs extra but since I didn't get one I don't know what its worth. On the bright side, you can get them pretty much anywhere now. Just about any reputable speed shop will have a couple in stock (particularly if they deal with other LS1 parts). As the LS1 has a very short/tight 90deg bend to get from the throttle-body to the airbox I'd suggest that you get the HSV (or repro) unit as it's all done for you and looks sweet to boot rather than do a custom job. Of course, if you have the time and patience you could do it yourself a lot cheaper but hey, I'm an impatient man.
I don't think you'll get much improvement (if any) just changing the pipe. It's generally done when you do the MCAI mod and a decent set of headers/exhaust. The tune is where it all happens though.
My ute turned 204rwkw before the edit with all parts fitted (MCAI, 4" MAF tube, 1 3/4" pacemaker 4>1 long headers and old twin 2 1/2" redback exhaust).
With what you have in mind Silence, I'd forget the MAF tube and get your OTRCAI put on when you get your MAFless tune done. That will give you the best overall result and will save you some dough.Thomas Oliver Woods 16/05/40 - 20/08/07You will always be with me Dad
23-08-2006, 11:41 AM #10
not a worry.. its all about time, and most importantly money at the moment..
The order in which i am planning to go about things is:-
MCAI with 2 hole mod, connecting the big mouth bit of the SS reductions to the mcai so i dont need a new radiator shroud..
Bigger MAF pipe
Pacemaker tri-Y headers
MAFless tune by G&D
OTRCAI when funds permit
tune touch up
save my pennies for genT/genTT or something of that nature (wont be for a while though)..
I guess the reason why i was looking at getting HSV MAF pipe was to get the most out of it before the OTR goes on.. not to mention it looks a lot better than the vacuum cleaner hose looking crap thats on it now
23-08-2006, 12:45 PM #11
Sounds like a good plan dude. I'd recommend ditching the SS reductions unit all together but since you've got it you may as well utilise it.
The VY/Monaro standard CAI flows more than enough air for 300kw+ and would cost you less than $50 to get the parts from Holden.Thomas Oliver Woods 16/05/40 - 20/08/07You will always be with me Dad
23-08-2006, 12:49 PM #12
yeah i was going to ditch it altogether, however some of our good friends on ls1.com suggested that since its already there i may as well utilise it as opposed to chucking it in the bin..
16-11-2011, 08:44 AM #13
We had a vy ss in yesterday pulled 207kw, 380nm with extractors and full stainless system already installed. Installed OTR and did a mafless tune, bumped it up to 225kw and 479nm. He was in and out in 2hrs. Not a major increase in kw's but close to 100kw over standard without exhaust and he definitely noticed the extra 99nmTUFF TUNE PERFORMANCE TUGGERAH,
AWD Dyno tuning and all your performance needs
3/99 Gavenlock Rd, Tuggerah
17-11-2011, 10:26 PM #14
My wife has a Nov 2002 coupe,...the factory specs claim 235kw at the fly,...thats 10kw more than the 1st coupe,..apparently due to the twin exhaust!
The exhaust looks real fat from the cats back, but slimmer in front of the cats.
what would be the best bang for buck if I only wanted to spend around 1000 bucks.
like a best small combo to increase the power to a better level =, yet retain the stock type driveability and fuel efficency etc.
I'm thinking it would be nice to have around 230 at the wheels, instead of at the fly!!
What do you guys reckon, do I really need the bigger extractors and front pipes??, or just some sort of tune?
18-11-2011, 11:31 AM #15
the best bang for your buck would be a decent system, extractors hi flow cats and good flowing mufflers in 2 1/2. The ss we had in pulled 207 atw and other than a good exhaust it was stock as a rock, not sure about the prices up there but you'd be around the 1000-1500 mark with a quality combo. Personally id go that route first because any other mods you can do would be restricted by lack of flowTUFF TUNE PERFORMANCE TUGGERAH,
AWD Dyno tuning and all your performance needs
3/99 Gavenlock Rd, Tuggerah
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