VZ SV6 Test.. MAF vs MAFLESS

[benzor]

Well, I did some dyno testing last weekend.

Results are in, NO MAF = BETTER AFR'S AND MORE POWER.

Can't wait to get the baby piggybacked and tuned, should be finally unlocking some HFV6 Potential!


WITHOUT MAF



With MAF.

So there we go Dyno proven

[VT-565]

wow! that thing gets rich up top, eh?! i am having probs with my MAF(i suspect) on my ecotec, i have a new one there yet to put on, i'll do that, fit my rockers and jump on the dyno again......i reckon i can see your 136-odd Kw with my MAF in place

[EvoVIIIJDM]

looks like thats the go ben, I will be gettin the mafless tune, piggyback memcal and aorst at the same time in may. Hell yeh.

[benzor]

Yes, but this is a stock engine, minus MAF. Unopened. Only mod is a Twin 2.5" catback and a hot air intake ;p (Unshielded pod in bay)

[benzor]

looks like thats the go ben, I will be gettin the mafless tune, piggyback memcal and aorst at the same time in may. Hell yeh.

Mine's not actually a Mafless tune. That's just the maf removed. No tune at all.

Re: The piggyback memcal, let me know how you go power wise, Im leaning towards the HKS Fcon SZ + Navigator.

[VT-565]

ahhh, i didnt know you were running with a stock tune.....i reckon if you pulled some of that fuel out up top to flatten that AFR line, you would pick up a shitload of power mate

[benzor]

ahhh, i didnt know you were running with a stock tune.....i reckon if you pulled some of that fuel out up top to flatten that AFR line, you would pick up a shitload of power mate

Yeah I know. Piggyback time

[Ganzer]

Mine's not actually a Mafless tune. That's just the maf removed. No tune at all.

so what have you just pulled out maf and then just drive. has the car played up at all
thanks

[benzor]

so what have you just pulled out maf and then just drive. has the car played up at all
thanks

It beeps "Check powertrain", but runs fine. I know the auto's will run in limp home mode.

Ive had it backfire on 42+ degree days, but only twice.

Basically, unplug maf. remove maf. reset PCM (20 minutes), drive car hard to relearn. See how you go performance wise
You will need something to bridge the gap from where the MAF was.. Im just running a pod ATM, but ill work something better when I have time.

[Sammy]

is there any reason you remove the maf ? is it that restrictive ?

[VZSV6]

for 3rwkw its not worth the hassle, it's un noticable power in the end, and with the car not liking it, it cant be good

[Doctor Bob]

basically what you are doing is showing how good the backup tables in the tune are.

Rob

[sting ls2]

Well, I did some dyno testing last weekend.

Results are in, NO MAF = BETTER AFR'S AND MORE POWER.

Can't wait to get the baby piggybacked and tuned, should be finally unlocking some HFV6 Potential!


WITHOUT MAF



With MAF.

So there we go Dyno proven

You said 136.6kw without maf,and VZSV6 said in a old post 145kwhttp://forums.justcommodores.com.au/showthread.php?t=13687.

[sting ls2]

Well, I did some dyno testing last weekend.

Results are in, NO MAF = BETTER AFR'S AND MORE POWER.

Can't wait to get the baby piggybacked and tuned, should be finally unlocking some HFV6 Potential!


WITHOUT MAF



With MAF.

So there we go Dyno proven

You said 136.6kw without maf,and VZSV6 said in a old post 145kw. #4 22-08-2005, 11:56 PM
VZSV6

Ride: N/A
Posts: 100




--------------------------------------------------------------------------------

i have 183.6rwhp, around 145rwkw

[vy-346]

Yeah they did a test on one in motor and it got 154.X rwkw, so much for production tolerances

[sting ls2]

Mine's not actually a Mafless tune. That's just the maf removed. No tune at all.

Re: The piggyback memcal, let me know how you go power wise, Im leaning towards the HKS Fcon SZ + Navigator.

I think this would uleash a lot of power what do you think?i think they use the motec system on the f4000 hfv6 190's,probably turbo no drama at all,cost a bit though.




28110


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[SLugg]

so I got 152RWKW in my 98VT with the maf in place ,
ohhh ahhhh ....PS i had a run with an SV6 manual the other night
poor bugger didnt see which way i went.....

[VZSV6]

so I got 152RWKW in my 98VT with the maf in place ,
ohhh ahhhh ....PS i had a run with an SV6 manual the other night
poor bugger didnt see which way i went.....

he probably let you go.

[VT-565]

so I got 152RWKW in my 98VT with the maf in place ,
ohhh ahhhh ....PS i had a run with an SV6 manual the other night
poor bugger didnt see which way i went.....

g'day slugg,
152Kw at the rears....98 VT V6? what did you have done to it? was it auto or manual?

[Blue-Chip]

Hi there,

Looking at the graphs, they seem to be identical in every shape and form
however the one running the maf runs an intake temp of 29 degrees and the
mafless runs intake temp of 42 degrees with both having the same ambient
air temp??????
What could possibly be causing a rise of 13 degrees in intake temp?
Was the probe positioned in a different place and if so why?.
As we know an increase intake air temp on a Dyno Dynamics dyno will yield
a higher power reading, so in conclusion i believe that the mafless tune would
show the same if not a lower power figure if these intake air temp perimeters were the same.
This is the beauty of there latest software, the mighty keyboard can give you any figure you desire.
Ecotec maniac your absolutely correct in saying that a leaner A/F mix would
yield heap more power, but unfortunately this is the factoty's way of reducing
cylinder combustion temperature in order of reducing Nox emissions.


Cheers Lou.

[VX_KN079]

Looking at the graphs, they seem to be identical in every shape and form

Look closer Lou... They are different

[Blue-Chip]

Look closer Lou... They are different

Hi VX_KN079,

Based on the ramp rate used, the graph can look staggered or smoothed and i believe that this may be the only difference.
If i am missing something, please tell me what it is.

Cheers Lou.

[SLugg]

he probably let you go.

you wish , he chirped hard leaving the line , I didnt go till i was sure he was havin a go , they dont make that much power std mine has 210KWAFW

he didnt try at the next set of lights in fact was quite sheepish about even looking over LOL some much money so little power

[vy-346]

So how much money have you spent on your vt to get it to have just 20fwkw more than an sv6?? Because i dont think people have spent 28 to 40 odd thousand on an sv6 because of its power..

[SLugg]

So how much money have you spent on your vt to get it to have just 20fwkw more than an sv6?? Because i dont think people have spent 28 to 40 odd thousand on an sv6 because of its power..

$5800 to go from 95KW ATRW to 152KW ATRW N/A