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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 11-08-2006, 04:28 PM   #21
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Well it seems that i can get it to idle and have decent off the line performance+ top end but my midrange sucks. The safc isnt fine enough to allow me to adjust my midrange the way i like so i am going to mothball the 460's and proably wire in some resistors on my 300's and run an fpr, ussing the safc to smooth it or sell it depending on what happens. This realy sucks but ohwell geuse there was a reason i havent seen to many people run injectors that big on a miata. at least on mine the driveability isues are to big, ad power delivery isnt as good either. back to the drawing baord.
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Old 11-08-2006, 04:56 PM   #22
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how do you get away with no timing control?
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Old 11-08-2006, 05:02 PM   #23
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Old 11-08-2006, 05:14 PM   #24
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i forgot to mention thanks guys if it hadnt been for this site and m.net i would still be a slow loud NA. but faith steped in and i seen andy running 330's with rx7 afm and ccpull runing 660's with his clocked ecu, and vafc, and 93mimi you all had a small part in my succes and saved me alot of headache. You guys are awsome.
I love you maaaan.
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Old 11-08-2006, 05:14 PM   #25
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My WI does a wonderfull job before i showed up on the scene not to many people here even considered WI but now there is even a group buy. oh well i might go exede or emu, and still use the 460's havent decided yet. I am just dissapointed. i almost had it but something keeps on monkeying with it and i dont have enough resolution on the safc to keep it right.
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Old 11-08-2006, 05:22 PM   #26
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Originally Posted by magnamx-5 View Post
Well it seems that i can get it to idle and have decent off the line performance+ top end but my midrange sucks. The safc isnt fine enough to allow me to adjust my midrange the way i like so i am going to mothball the 460's and proably wire in some resistors on my 300's and run an fpr, ussing the safc to smooth it or sell it depending on what happens. This realy sucks but ohwell geuse there was a reason i havent seen to many people run injectors that big on a miata. at least on mine the driveability isues are to big, ad power delivery isnt as good either. back to the drawing baord.
By midrange are we talking about WOT runs @ 3500-5500 or are you just talking about around town driveability? You might try to put the 190lph in there to reduce the fuel pressure a little and you should still have plenty of fuel for the WOT pulls....might give it a try.
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Old 11-08-2006, 06:48 PM   #27
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Originally Posted by magnamx-5 View Post
The safc isnt fine enough to allow me to adjust my midrange the way i like so i am going to mothball the 460's .
you need a jaycar digital fuel adjuster my man.

read these articles
http://autospeed.drive.com.au/cms/A_2418/article.html
http://autospeed.drive.com.au/cms/A_2420/article.html

when my 460's get here i will fit them to the car and see if i can tune my dfa to get it to run nice and smooth. my car is still naturally aspirated but at least it'll give us an idea if this combo can work on your engine or not.
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Old 11-08-2006, 09:00 PM   #28
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He's already running the SAFC, which, without having read the articles, is probably pretty similar, with regard to functionality.
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Old 11-08-2006, 09:17 PM   #29
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The jaycar has much finer resolution. If I recall, it has 128 points of adjustment, which I believe is more than the SAFC. The jaycar DFA is cheap if you can build it, but I've heard from those that have made it that it is quite a little bugger to put together right...requires some seriously fine soldering that must be done with tiny iron points.
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Old 11-08-2006, 09:21 PM   #30
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yeah they are similar but the dfa has much finer resolution than the safc. you can tune it across about 65 discrete load points on the stock miata afm.
makes this quote from the safc neo sales blurb seems pretty laughable:
" The AFC NEO boasts an incredible 16 points of user definable fuel correction"
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Old 11-08-2006, 09:22 PM   #31
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i had no problems building mine, but i'm pretty handy with a soldering iron i guess.
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Old 11-08-2006, 09:25 PM   #32
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That's good news fatty! Did you have to change points on your iron, or just use a generic cheapo soldering iron?
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Old 11-08-2006, 09:30 PM   #33
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That's good news fatty! Did you have to change points on your iron, or just use a generic cheapo soldering iron?
how dare you call him fatty.....LOL

Sorry just the " Hey, thats good news FATTY" sounded funny to me. Also note that I have the mental capacity of a -34 year old.
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Old 11-08-2006, 09:36 PM   #34
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The dfa sounds like a neat toy, if I had the time I would look at building one...

IIRC there used to be an escort (95egt?) that was running 460's w/ just an safc for over 100K miles.. Have you tried playing with both the lo and hi setting of the SAFC? It's been a long time since I set one up, But I do remember getting the middle ranges was kind of finicky. Also if you aren't, you should set up the SAFC on a map sensor, using the TPS input, it will make life a little easier.
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Old 11-08-2006, 09:37 PM   #35
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heehee.

fatty has been my nickname since i was about 17. so i'm not offended don't worry

i'm not even fat!

i have a pretty nice iron. a "micron" variable temperature soldering station. it has a fine tip on it already. but i can't see this kit being too difficult even with a cheap low heat fine tipped iron. just keep the tip clean (dab it on a wet sponge after each use)
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Old 11-08-2006, 09:44 PM   #36
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Hmmmmmm...another future project
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Old 11-08-2006, 10:41 PM   #37
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a real tps would help my low boost doesnt have the same power and my WOt stabs at 3K+ until about 4 arent as linear as before either the RR of 1-1 from my stock fpr seems to be throwing it for a loop. if i had a tps i might be better as i could run a partial laod map instead of just tunning the hi map. THanks guyd maybe i'll keep trying to get it right. maybe the 190 will do it or the afm needs some more tweaking now that i have had real 14 psi i dont wanna leave
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Old 11-08-2006, 11:04 PM   #38
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so what exactly is happening to your AFRs?
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Old 11-08-2006, 11:53 PM   #39
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Quote:
Originally Posted by magnamx-5 View Post
a real tps would help my low boost doesnt have the same power and my WOt stabs at 3K+ until about 4 arent as linear as before either the RR of 1-1 from my stock fpr seems to be throwing it for a loop. if i had a tps i might be better as i could run a partial laod map instead of just tunning the hi map. THanks guyd maybe i'll keep trying to get it right. maybe the 190 will do it or the afm needs some more tweaking now that i have had real 14 psi i dont wanna leave

For a twenty dollar map sensor...

http://www.2gnt.com/www/corbin/foolafc.html
http://www.turbosaturns.net/articles/SAFC%20install.htm
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Old 11-09-2006, 04:09 AM   #40
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one question - what does WI stand for? there are so many acronyms to learn....
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