Cool, thanks for the tip. I've got a sock on the filter but I didn't expect that would be enough.

I originally extended the MAF out to the bay based on the other bloke years ago with the PTP kit. But his intake went from small diameter to stock and back to small causing him all kinds of headaches with the MAF. Mine is stock size from the very front all the way to the turbo elbow where it increases to 4".

 

Because I'm injecting water into the intake of the turbo. The closer the MAF is to the turbo the higher the likelihood of blowback from the water injection.

 

Ahh, water inside the intake hitting the MAF, was not considering that

 

Interesting side effect of moving the MAF into the engine bay in an aluminum housing above the fans: as I sat idling in a long line at a drive thru I noticed my LTFT slowly increasing. It seems as the bay heats up the MAF takes less voltage to keep the wire hot, so it thinks less air is flowing and reduces the amount of fuel. However, then AFR is off so it starts trimming fuel back in. Once I got back home I let it idle in the garage with the hood open and the LTFT came back down...

Guess I might need to get on board with a fan tray

 

That idle LTFT can be very dangerous just after a reflash as it adjusts the WOT trim as well !

 

Yeah man, the tray is a must. For that as well as keeping IAT's at idle reasonable. However if you idle long enough IAT's will go way up anyway.

 

Curious about this. I was getting positive trims while idling. Wouldn't that lead to WOT being richer? Even still, there didn't seem to be any LTFT above idle. I did a couple tests and except for idle everywhere else had 0% LTFT. Perhaps the inrush of cool air brought the MAF back inline?

 

Or you could quit monkeying around with a MAF system that wasn't designed for FI use and get an Adaptronic piggyback ...

 

Oh Team

 

I think I know what you mean Brettus. If I had tuned for WOT with the trims there then it would suddenly run lean after a reflash. This is why I clear my PCM before doing any WOT tuning, so ya I definitely agree!

 

I have seen this happen several times :
Do a reflash when engine is warm then sit idling for a while . The LTFT will adjust for idle but carry this trim over to WOT as well . It's not until after a few drive cycles that the WOT trim normalises so if the trim at idle was negative ..... you would run lean.
This is why it's important for the LTFT at idle to be near zero.

 

I moved the MAF back out front. It hunts a little but not horrible. In the bay it was rock solid I'm thinking because it had less length which cut down on the time it took for the O2 sensor to register changes. I'd rather deal with a little hunting at idle than see the trims build like that. Now to craft a decent water shield. The problem is water dripping down into the connector when it rains.

Team I like the idea of the Adaptronic but flash tuning has worked for my needs so I haven't been able to justify the $$$

 

Maf tuning works fine for FI . Team just hasn't mastered it yet

 

It works fine for the most part but it is much more of a PIA that is certain. I believe this even more now after playing with the Adaptronic.

 

This is exactly the answer I'd expect from someone with no understanding or experience with the Adaptronic

I've mastered MAF tuning fine and never said you couldn't gimmick your way around it with band-aids and such. Then there is the 5V limit too.

Keep impressing us with your lack of understanding B ...

 

I don't actually care if anyone thinks I understand stuff or not . You obviously, have an image to protect . It shines through in many of your carefully worded answers that try and portray that you know the answer.................. even if you don't.
Keep it up Team , most people are buying it !

 

Keep it civil guys.

Just a friendly reminder.

Travis

 

wow, I thought we were just equally kidding with each other

we don' need no over-reacting moderator jumping in yet either

 

No over reaction, just a friendly reminder at 3 am lol.

Making sure all is well in Wonderland ya now.


Travis

 

not sure why anyone else is getting wound up, I'm not though.

You do know that I'm in the process of converting my NA engine over to an Adaptronic, right?

My only need for Cobb AP is to block CELs so that it still has OBD2 test passing capability, though in reality the need for it is moot ... because race car

but to get back on topic for this thread, I only brought it up because it's generally accepted that MAP is more forgiving and well suited for FI. The Adaptronic piggyback allows you much more control over various tuning factors too. MAF is extremely accurate, but to a fault. It makes sense if your goal is emissions & fuel economy, but it's like using a sledge hammer to chisel intimate details on minature sandstone figurines wrt FI performance.

otherwise sorry again if hit a sensitive spot


.

 

remember the three break points in the maf, each one has a LTFT associated with it, so you should have 0-10gs ltft, 10-20gs ltft, and 20-max gs LTFT

its been my experience that the 20-400ish GS LTFT is the one that will influence the WOT trims

that being said I still like the maf out side the engine bay, and the tray just makes things pretty

the adaptronic is cool but its still a piggy back, for 1500$ I want to replace the entire ecu, Power FC did it for the rx7 for 1k....

really I am envy the Mazdaspeed3 OEM ecu, it has boost control, and Uses MAF and MAP sensors to do its fueling. The cobb has access to all of it

 

Yeah it would be great. Some of the other platforms (like the FD, BMW's, Subies, etc.) get all the goodies. But we have to work with what we have. The Adaptronic just gives you more capability. Whether that equates to more power is yet to be seen but so far so good. Flex fuel capability, MAP tuning, integrated boost control, etc. are super nice features.

 

You just caught me in a stroppy mood . Sorry

As far as the maf vs map .... Yes MAP is less sensitive . But Maf can be made less sensitive too . I found that by disabling the LTFT regime it becomes a lot more forgiving of minor boost leaks etc.

 

it's ok, I get there often too. While I may blow off at the moment, that's the end of it. Not like the silly forum vendor that cancelled my order this morning


.