MAF swap - Page 3 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Engine Performance This section is for discussion on all engine building related questions.
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 07-23-2013, 03:35 PM   #41
Elite Member
iTrader: (3)
 
concealer404's Avatar
 
Join Date: Aug 2011
Posts: 8,461
Total Cats: 782
Default

Quote:
Originally Posted by mitchellrg View Post
The only dumb question is the one not asked for fear of ridicule.

I am a newb but I refuse to believe that all mods have been tried. Sure, there is a generic tried and true method to everything we do. I just like to explore other options so I ask folks like you who have alot more experiance and knowledge in the area. From the good and bad responses I have recieved I know I can put the idea to rest.

No, I do not plan on a turbo. My plan ... one day ... if it will fit ... is the 3.7v6 out the current mustang. The whole motor only weighs 20lbs more than the 1.8, but that will be after my 1.8 fails or I kill it trying to do some DUMB mod that I didnt ask question about.

You don't even plan on doing engine swaps the correct way. Everything you want to do is half-assed.

Piggyback and Maf swap to get almost-kindof-sortof-not-really to a standalone...

Motor swap that's missing two cylinders...

Racelands instead of a suspension worth a ****...
concealer404 is online now   Reply With Quote
Old 07-23-2013, 03:54 PM   #42
Newb
Thread Starter
 
Join Date: Jul 2013
Posts: 31
Total Cats: -12
Default

Please kill this thread as my feeling are so hurt I will simply burry my head in the sand, sell my miata and jump off a cliff. Oh wait, just kill the thread please.
mitchellrg is offline   Reply With Quote
Old 07-23-2013, 03:56 PM   #43
Elite Member
iTrader: (3)
 
concealer404's Avatar
 
Join Date: Aug 2011
Posts: 8,461
Total Cats: 782
Default

Help me help you.
concealer404 is online now   Reply With Quote
Old 07-23-2013, 04:16 PM   #44
Senior Member
iTrader: (3)
 
Join Date: Apr 2011
Location: Volo, IL
Posts: 1,247
Total Cats: 140
Default

No intentions of going turbo.

Joins Miataturbo for advice.




Too soon?
Attached Thumbnails
MAF swap-eggplants101444394_zpse86a2b9c.jpg  
dieselmiata is offline   Reply With Quote
Old 07-23-2013, 10:06 PM   #45
Junior Member
 
Join Date: Mar 2012
Posts: 111
Total Cats: 8
Default

Welcome to miataturbo, the only car forum where "haters gonna hate" is not a valid argument!
Vilko is offline   Reply With Quote
Old 07-23-2013, 10:32 PM   #46
I'm a terrible person
iTrader: (19)
 
FRT_Fun's Avatar
 
Join Date: Apr 2009
Location: Arizona
Posts: 7,293
Total Cats: 180
Default

#1 all time hater award will forever goto Scott. He is my hero. He hates even when he doesn't mean to hate.
FRT_Fun is offline   Reply With Quote
Old 07-23-2013, 10:46 PM   #47
Senior Member
iTrader: (3)
 
Join Date: Apr 2011
Location: Volo, IL
Posts: 1,247
Total Cats: 140
Default

I hate you for hating.
dieselmiata is offline   Reply With Quote
Old 07-23-2013, 10:51 PM   #48
Junior Member
iTrader: (3)
 
Join Date: Jun 2011
Location: Charlotte, NC
Posts: 277
Total Cats: 24
Default

MAF swap-tumblr_lubw454rbh1qfytizo1_500.jpg
RussellT94 is offline   Reply With Quote
Old 07-23-2013, 10:52 PM   #49
I'm a terrible person
iTrader: (19)
 
FRT_Fun's Avatar
 
Join Date: Apr 2009
Location: Arizona
Posts: 7,293
Total Cats: 180
Default

Somewhere in the world Scott is hating on something/someone right now.
FRT_Fun is offline   Reply With Quote
Old 07-23-2013, 11:01 PM   #50
Elite Member
iTrader: (5)
 
Join Date: Oct 2007
Location: Canton, Ga
Posts: 1,707
Total Cats: 19
Default

Even 1.8 MAF is excrement. I gained 5rwhp just by removing it, and that's N/A
Stealth97 is offline   Reply With Quote
Old 07-23-2013, 11:04 PM   #51
Senior Member
iTrader: (3)
 
Join Date: Apr 2011
Location: Volo, IL
Posts: 1,247
Total Cats: 140
Default

That's nothing. I gained 10RWHP just by excrementing into my MAF.
dieselmiata is offline   Reply With Quote
Old 07-23-2013, 11:06 PM   #52
Junior Member
 
Join Date: Dec 2006
Posts: 192
Total Cats: 8
Default

Quote:
Originally Posted by Stealth97 View Post
Even 1.8 MAF is excrement. I gained 5rwhp just by removing it, and that's N/A
'cause the 1.6 didn't have a MAF. It had an AFM. Different principles, different response curves. Also there are loads better hotwire MAFs out there than the 1.8NA's.
tpwalsh is offline   Reply With Quote
Old 07-24-2013, 12:15 AM   #53
Newb
Thread Starter
 
Join Date: Jul 2013
Posts: 31
Total Cats: -12
Default

Quote:
Originally Posted by tpwalsh View Post
'cause the 1.6 didn't have a MAF. It had an AFM. Different principles, different response curves. Also there are loads better hotwire MAFs out there than the 1.8NA's.
Can you list a few?
mitchellrg is offline   Reply With Quote
Old 07-24-2013, 03:40 AM   #54
Junior Member
iTrader: (11)
 
Join Date: Oct 2011
Location: Bellingham, WA
Posts: 285
Total Cats: 7
Default

*disclaimer: I agree with the trend in this thread, waste of effort and money. Get megasquirt or mod your suspension.

That being said, all the brokedicks in the protege/323/escort world "think" it is beneficial to swap the electronics out of the stock vaf(flapper box) into a vaf with a larger body. Typically from the F2/F2t powered mx6 or probes. Look up k-code hybrid for more. IMHO, any "gains" will only exist in your head.

Edit: didn't realize op had an obd-II car.

Last edited by iantboyd; 07-24-2013 at 11:35 AM. Reason: Correcting some mis-information.
iantboyd is offline   Reply With Quote
Old 07-24-2013, 05:13 AM   #55
Elite Member
 
codrus's Avatar
 
Join Date: Mar 2007
Location: Santa Clara, CA
Posts: 3,877
Total Cats: 344
Default

Quote:
Originally Posted by Stealth97 View Post
Even 1.8 MAF is excrement. I gained 5rwhp just by removing it, and that's N/A
The NA 1.8 MAF is pretty restrictive, but the NB one isn't too bad.

MAF vs Speed/Density -- in principle, MAF should be better. Instead of baking the VE of the motor into a 3d table so that you can extrapolate from MAP & RPM into a fuel amount, you just directly measure the air going in. As for why it's not more prevalent in the aftermarket, most of the downsides to Speed/Density come from a comparative lack of flexibility in dealing with changes to the motor's VE. With a factory computer that sucks because if you put a better-flowing exhaust on the engine, then suddenly the fueling is all wrong and you can't fix it. With an aftermarket computer it's still wrong, except you have a wideband so the computer can cope and then you just fix it. So S/D is cheaper and easier and doesn't have a major downside, so why use MAF?

People who tune cars with reprogrammable factory computers and factory MAF sensors often stick with the MAF sensor.

--Ian
codrus is online now   Reply With Quote
Old 07-24-2013, 05:33 AM   #56
Elite Member
 
codrus's Avatar
 
Join Date: Mar 2007
Location: Santa Clara, CA
Posts: 3,877
Total Cats: 344
Default

Quote:
Originally Posted by iantboyd View Post
*disclaimer: I agree with the trend in this thread, waste of effort and money. Get megasquirt or mod your suspension.

That being said, all the brokedicks in the protege/323/escort world "think" it is beneficial to swap the electronics out of the stock vaf(flapper box) into a vaf with a larger body. Typically from the kl powered mx6 or probes. Look up k-code hybrid for more. IMHO, any "gains" will only exist in your head.
OP has a 97, so he's got a hot wire, not a flapper door.

That said, swapping to the Rx-7 flapper door on the 1.6 cars is one of the commonly accepted cheap small hp mods. Sure it was only worth a few hp, but the Rx-7 sensors were cheap and easy to get. Doesn't work on a 97 though.

The NB MAF is less restrictive, but I have no idea if it would work with a 97 ECU or not.

NA MAF:

NB MAF:


Looking on ebay, you can get a 99 MAF for $40; let's imagine that it worked right with nothing but some wiring harness hackery (possible, but unlikely) and let's say it's worth 2 hp. At $20/hp that's about the same ratio as a turbo kit. The downside is that you'll be throwing that $40 away if/when you get tired of tiny hp mods that you can't feel and go to a megasquirt. It's the same as how a header is a waste of money when you get tired of piddling little naturally aspirated mods and go with a turbo.

--Ian
Attached Thumbnails
MAF swap-b6bff.jpg   MAF swap-maf-fp39-3.jpg  
codrus is online now   Reply With Quote
Old 07-24-2013, 09:22 AM   #57
Newb
Thread Starter
 
Join Date: Jul 2013
Posts: 31
Total Cats: -12
Talking

Quote:
Originally Posted by codrus View Post
OP has a 97, so he's got a hot wire, not a flapper door.

That said, swapping to the Rx-7 flapper door on the 1.6 cars is one of the commonly accepted cheap small hp mods. Sure it was only worth a few hp, but the Rx-7 sensors were cheap and easy to get. Doesn't work on a 97 though.

The NB MAF is less restrictive, but I have no idea if it would work with a 97 ECU or not.

NA MAF:

NB MAF:


Looking on ebay, you can get a 99 MAF for $40; let's imagine that it worked right with nothing but some wiring harness hackery (possible, but unlikely) and let's say it's worth 2 hp. At $20/hp that's about the same ratio as a turbo kit. The downside is that you'll be throwing that $40 away if/when you get tired of tiny hp mods that you can't feel and go to a megasquirt. It's the same as how a header is a waste of money when you get tired of piddling little naturally aspirated mods and go with a turbo.

--Ian
Thank you. The best reply yet.
mitchellrg is offline   Reply With Quote
Old 07-24-2013, 09:44 AM   #58
Junior Member
 
Join Date: Dec 2006
Posts: 192
Total Cats: 8
Default

Quote:
Originally Posted by mitchellrg View Post
Can you list a few?
I was thinking something along the lines of a 4.6L MAF



Or a Bosch MAF

Attached Thumbnails
MAF swap-hfp-maf1-1.jpg   MAF swap-pic1.jpg  
tpwalsh is offline   Reply With Quote
Old 07-24-2013, 09:45 AM   #59
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,854
Total Cats: 1,788
Default

Tell us more about spending hundreds of dollars in order to make 0.25rwhp...
Braineack is offline   Reply With Quote
Old 07-24-2013, 09:52 AM   #60
Elite Member
iTrader: (3)
 
concealer404's Avatar
 
Join Date: Aug 2011
Posts: 8,461
Total Cats: 782
Default

Quote:
Originally Posted by iantboyd View Post
*disclaimer: I agree with the trend in this thread, waste of effort and money. Get megasquirt or mod your suspension.

That being said, all the brokedicks in the protege/323/escort world "think" it is beneficial to swap the electronics out of the stock vaf(flapper box) into a vaf with a larger body. Typically from the kl powered mx6 or probes. Look up k-code hybrid for more. IMHO, any "gains" will only exist in your head.

That's.... not really correct at all. They're using the flapper boxes you speak of, which are not present at all in any KL car.

They're using RX7 units, and the K-code Hybrid is probably something to do with F2-powered 1st gen MX6/Probe.

The KL unit is more of a "sliding booby nipple" type deal. I personally think it's far worse than a flapper, which is probably why those guys pick up so much power with a Millenia MAF conversion.
concealer404 is online now   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Raleigh: Fiberglass headlight scope, 1.6L ECU, AFM, Hardtop latches, more bigmackloud Miata parts for sale/trade 13 09-22-2017 01:34 PM
Noob to Miataturbo from MA JxPhan Meet and Greet 3 10-02-2015 03:17 AM
Low oil pressure after 1.8 swap and new turbo setup JesseTheNoob DIY Turbo Discussion 15 09-30-2015 03:44 PM
Are my coils failing? viriiguy General Miata Chat 5 09-28-2015 08:39 PM
VR6 to Miata Swap ScrapinMX5 Meet and Greet 8 09-28-2015 02:04 PM


Tags
5 star thread, would read again

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 01:09 PM.