realistic boost on stock injectors and maf w/ toyata ct26?

Information on the naturally-aspirated KA24E and KA24DE engines.
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95hondakillr
Posts: 256
Joined: Wed Jul 30, 2003 6:26 pm
Car: 240s

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Have searched this but being a different turbo I figured I would ask. How much boost can I run with stock injectors and maf while running a toyota ct26 turbo? Any info will help, so far this site has helped me in every dilema i've come across and I just want to thank everybody while im at it for sticking together and helping each other out. I know a few people have ran this turbo so this ones for your brain teaser. My setup is a toyota ct26 turbo, log style mani, stock internals, apexi s-afc 2, high volume oil pump, apexi boost controller, walboro 255lph fuel pump, and thats it so far. Any help or comments appreciated!


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Checkered-Member
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Joined: Wed Sep 24, 2003 7:14 am
Car: 1998 Nissan Altima (modded)
2003 Audi A6 2.7T (stock)
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there is a guy on here running 5psi on stock injectors that would pretty much be the limit

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hannibal
Posts: 9680
Joined: Wed Sep 11, 2002 2:38 am
Car: Red Line to Glenmont
Location: Washington DC

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Ive heard 4-5 psi on stock injectors. Your fuel pump may allow to reach 5 psi. Just make sure it isnt leaning out.Consider used 370cc injectors from a SR or VG. Only about $100

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WAbernethy
Posts: 299
Joined: Wed Aug 28, 2002 11:13 am

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If you already have the AFC then you should def. kick in the extra $$ for some new injectors. I've got about the same setup with bigger injectors and I've been running 9psi on stock internals.

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95hondakillr
Posts: 256
Joined: Wed Jul 30, 2003 6:26 pm
Car: 240s

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I know this is going to sound stupid to some people but I was flipping through the afc manual and was wondering what type of car do you program it to? Im going to have someone program my afc but i was just curious what car to select since they are all j-spec cars listed. Thanks for the replies I will be getting bigger injectors and a 300zx maf I want to realiaby run up to but not all the time about 11 lbs. I know i will probally need 50lb injectors for this though as well as all the top feed crap. Im going to read the afc manual and if its not that complicated I will program it myself I just dont want tom screw anything up, but on the same token I will know how to adjust stuff if i do it and i dont want my car being a "mechanics car" because i have no clue how to do anything to it.

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95hondakillr
Posts: 256
Joined: Wed Jul 30, 2003 6:26 pm
Car: 240s

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BTW WAbernthy have you had your car dynoed?

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huguetpj
Posts: 996
Joined: Mon Aug 19, 2002 7:54 am
Car: 93 KAT Coupe

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Just set it to MAF, 4 cyl, Throttle up. Am I forgetting anything?

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huguetpj
Posts: 996
Joined: Mon Aug 19, 2002 7:54 am
Car: 93 KAT Coupe

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Now I remember, Karman doesn't use sensor number nor sensor cal, hotwire does.

So to set it up, and per the instructions on http://www.apexi-usa.com/documentation.asp

1. Set Sensor type to Hotwire2. For both S13 & S14 stock MAFs use sensor no. 5 in & 5 out (use 2 in for Z32 MAF)3. Set sensor cal to 1 in & 1 out4. Num of cylinders to 4 (in some cars it needs to be set to 2 due to the ignition config, I don't know if this is the case with the 240)5. Set throttle to up

Now I believe I ain't forgetting anything.

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WAbernethy
Posts: 299
Joined: Wed Aug 28, 2002 11:13 am

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Yeah, had mine dynoed back when I first finished my initial setup. Was getting something like 160rwhp/180tq at 5psi. I got bored with that pretty quickly and changed the boost to closer to 9psi. The old program seems to work fine at 9psi as well. I will be going back after my rebuild and all the other little "fixes" are done. I'm going to have a 10 psi program and maybe a 15 psi program. We'll see.

HIGHLIFE1
Posts: 82
Joined: Sun Jan 18, 2004 9:49 pm

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runing 6 psi on stock injectors, got a SAFC 2 as well, i think the stock injectors can get up to 7 psi not sure though

J

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ftrs13
Posts: 305
Joined: Sat Jul 05, 2003 7:11 pm
Car: KATs

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so would I be running extremely rich at 5-7psi with an 8:1 FMU??


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