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Old 07-02-2013, 05:53 AM   #1
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KA24DET stalling issues

Hey guys,
new here to zilvia.
I have a question and any info/help is appreciated.
I recently got my first 240, an s13 coupe with a turboed '93 ka24de.
For some reason, when slowing down/cruising my engine starts to bog and die.
It doesnt do it if i tap the gas and give it gas. I can not put the car in neutral for more than 2 seconds or it will die.
It also gurgles and backfires when heading into lower rpms in either 2nd or 3rd gear.
Is this a problem with my afc?
I am running an APEXI Neo
I found a link that talks about throttle % with 370cc injectors so i will try that when i get home today and the engine is cool enough.
Let me know if you guys know or think you know what the problem is, thanks!
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Old 07-02-2013, 10:29 AM   #2
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Bov open to atmosphere and running rich on decel causing you to stall. Run blow through maf.
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Old 07-02-2013, 10:52 AM   #3
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Originally Posted by shift_down View Post
Bov open to atmosphere and running rich on decel causing you to stall. Run blow through maf.
so if i were to recirculate the BOV would that eliminate the problem?
to me it seems like an easier solution than setting up and tuning a blow through
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Old 07-07-2013, 03:01 AM   #4
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It may fix part of the problem, but it sounds like you're running too rich. What's your afr look like?
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Old 07-07-2013, 09:47 AM   #5
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Recirculating blow off valve will also solve this issue. But TRUST ME when I say this, going blow through is easier to do and ALOT better. If you blow a coupler on blow through, you can still drive the car with no issues, but you can't do that with pull through. I just recently switched to blow through after trying the recirculated blow off valve route, and I love blow through alot better. Take my word for it bro, blow-through is great.
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Old 07-07-2013, 07:18 PM   #6
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Quote:
Originally Posted by shift_down View Post
Recirculating blow off valve will also solve this issue. But TRUST ME when I say this, going blow through is easier to do and ALOT better. If you blow a coupler on blow through, you can still drive the car with no issues, but you can't do that with pull through. I just recently switched to blow through after trying the recirculated blow off valve route, and I love blow through alot better. Take my word for it bro, blow-through is great.
thank you so much for the information!
so how exactly does a blow through work? do i literally just buy a z32 maf and that will solve the problem? or is there something more i have to do, i am not familiar with the problem
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Old 07-08-2013, 08:53 AM   #7
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and how do i go about putting the maf in the piping for the intercooler? (i think thats where it suppose to go). its hard to find information about how to set this up haha i can find info on how to tune it and pro and cons of it!
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Old 07-08-2013, 09:01 AM   #8
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Quote:
Originally Posted by greenb0y View Post
and how do i go about putting the maf in the piping for the intercooler? (i think thats where it suppose to go). its hard to find information about how to set this up haha i can find info on how to tune it and pro and cons of it!
you can either get a z32 or a cobra maf either will work fine, just rewire and youll be set, also make sure your plugs arent screwed.
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Old 07-08-2013, 10:27 AM   #9
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.
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Old 07-08-2013, 10:50 AM   #10
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.
THANK YOU! this is what i had pictured in my head.
so its okay to have it that close to the fmic 90 degree bend? do you have any trouble with that or no?
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Old 07-08-2013, 12:04 PM   #11
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No trouble at all. Just make sure there is atleast 6 inches of straight pipe before and after the maf
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