MAF location?
-
- Posts: 8
- Joined: Fri Apr 22, 2016 4:57 am
- cars: Holden vt commodore.
MK triton
EK1 honda civic.
MAF location?
so i've been googleing this, and searching around on here, and cant seam to find a difinitve answer....
in a stock l36 the maf is normally around 700-800mm from the tb ( i think) would there be any effects to the throttle response/AFR/power figures etc etc etc if i was to run the maf about 500mm before a turbo and about 4 meters from the engine with an intercooler in there as well?
im not talking turbo lag, im talking fueling lag, or enriching problems, or anything else???
in a stock l36 the maf is normally around 700-800mm from the tb ( i think) would there be any effects to the throttle response/AFR/power figures etc etc etc if i was to run the maf about 500mm before a turbo and about 4 meters from the engine with an intercooler in there as well?
im not talking turbo lag, im talking fueling lag, or enriching problems, or anything else???
-
- Posts: 3416
- Joined: Thu Apr 09, 2009 12:31 pm
- cars: VH, VN, VS, VX
Re: MAF location?
An A2A L67 with the MAF in the factory location is probably the best comparison and that isn't really the happiest combination. Generally (I believe) they either move the MAF to the cool side of the intercooler system or go MAP instead.
- antus
- Site Admin
- Posts: 8237
- Joined: Sat Feb 28, 2009 8:34 pm
- cars: TX Gemini 2L Twincam
TX Gemini SR20 18psi
Datsun 1200 Ute
Subaru Blitzen '06 EZ30 4th gen, 3.0R Spec B - Contact:
Re: MAF location?
Yes i'd say cool side of the IC is a good bet. The fuelling will be accurate within the limits of the maf and the pcm OS and the temperature readings from the maf will be accurate for the air thats going in to the engine.
Have you read the FAQ? For lots of information and links to significant threads see here: http://pcmhacking.net/forums/viewtopic.php?f=7&t=1396
Re: MAF location?
yes basicly the MAF controls the injector pulse, so measuring the air closest to what's going into the plenum before the valves is what you want ideally.
-
- Posts: 8
- Joined: Fri Apr 22, 2016 4:57 am
- cars: Holden vt commodore.
MK triton
EK1 honda civic.
Re: MAF location?
Would moving the maf to roughly 500mm before the throttle body and adding a map sensor into the ecu, some where in the plenium (I read there is a spare input in your enhanced ecu flash u put together) would that work out?
- Holden202T
- Posts: 10311
- Joined: Sat Feb 28, 2009 9:05 pm
- Location: Tenambit, NSW
- Contact:
Re: MAF location?
the map input will only give you readings in the data stream of the map, it will not have any effect on the engines tune!
as for 500mm from the throttle, if thats the best you can do then i guess its the best you can do, provided its the last thing in the inlet pipe before it goes into the throttle body it should work ok.
as for 500mm from the throttle, if thats the best you can do then i guess its the best you can do, provided its the last thing in the inlet pipe before it goes into the throttle body it should work ok.
No matter what the question is, the answer is always more horsepower!
Just starting out? Have a read of the getting started guide
Basic tuning of a delco ECM with $12P thread
Advanced tuning of a delco ECM with $12P thread
Just starting out? Have a read of the getting started guide
Basic tuning of a delco ECM with $12P thread
Advanced tuning of a delco ECM with $12P thread
-
- Posts: 186
- Joined: Fri Jul 09, 2010 10:01 pm
- cars: VY s L67
Haines Hunter - not a car but still a toy
Re: MAF location?
I run the LS6 MAF in the stock location with about 1.2m of piping on my L67 with out issue.
It did need some tuning to make it all work well.
If that helps
It did need some tuning to make it all work well.
If that helps
-
- Posts: 8
- Joined: Fri Apr 22, 2016 4:57 am
- cars: Holden vt commodore.
MK triton
EK1 honda civic.
Re: MAF location?
0081 wrote:I run the LS6 MAF in the stock location with about 1.2m of piping on my L67 with out issue.
It did need some tuning to make it all work well.
If that helps
Is that on the boosted Side?
And the tuning, was that to get the maf to work or to get it happy seeing boost?
-
- Posts: 8
- Joined: Fri Apr 22, 2016 4:57 am
- cars: Holden vt commodore.
MK triton
EK1 honda civic.
Re: MAF location?
Closer shouldn't be much of an issue, I was just using the number as a ball park figure. Ie much better then 4 meters...Holden202T wrote:the map input will only give you readings in the data stream of the map, it will not have any effect on the engines tune!
as for 500mm from the throttle, if thats the best you can do then i guess its the best you can do, provided its the last thing in the inlet pipe before it goes into the throttle body it should work ok.
-
- Posts: 186
- Joined: Fri Jul 09, 2010 10:01 pm
- cars: VY s L67
Haines Hunter - not a car but still a toy
Re: MAF location?
daggels wrote: Is that on the boosted Side?
And the tuning, was that to get the maf to work or to get it happy seeing boost?
I run it slightly further away from the motor than the stock location on the l67.
The tuning was to get the idle right and a few other things like coming to a stop at the lights.