Need Basic Assistance ka24e-t

Basic tech questions such as future setups, different turbo kits, car diagnosis, etc
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Myst69
Driving Mom's Station Wagon
Posts: 33
Joined: Sun Jan 15, 2023 9:37 pm

Need Basic Assistance ka24e-t

Post by Myst69 »

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Hello all, I’m just curious if anyone can lend me a little assistance with my project pickup. I’m trying to wrap up a build on my 93 4x4 Hardbody. This is my first turbo build so I’m still figuring out a lot as I go. I’ve got a stock ka24e engine only upgrades are new felpro head gasket, and all new gaskets from there up (intake, exhaust, throttle body etc.) 570cc deaschwerks top feed injectors, Rev9 turbo manifold with a smaller Garret .60 trim I believe with custom welded ic piping through intercooler into custom welded oe throttle body, tiel wastegate and bov and an evil energy boost reference fuel regulator and 24 -2 trigger wheel. AEM wideband o2 sensor wired into ECU which is a mspnp2. Boost gauge, oil pressure gauge and afr gauge in cab. What I am trying to figure out is either my o2 sensor reading is incorrect or I am running really lean, the custom welded exhaust only has a cherry bomb on the underside of the truck and if you ask me it smells like it is running very rich but my gauge is indicating lean conditions like very lean??? I’m chasing my tail with the ve tables as well. If anyone has any input or tuning tips with either the mspnp2 or AEMwideband that could assist it would be much appreciated. Idle and timing all seem acceptable at this time but on that note when I was timing off of the #1 cylinder when I switched from a fixed advance to use table in ts my timing changed about 20 degrees?? So I changed the tooth angle to about 92 and that put me back at around 10 degrees btdc. I’m pretty much out of ideas, I’ve got the walbro 255 that I was planning on installing after I can get it to idle around 13 or 14 afr. Please help lol
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p00t
Encyclopedia-Nissan
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Joined: Sun Aug 28, 2005 10:27 pm
Location: Detroit

Re: Need Basic Assistance ka24e-t

Post by p00t »

Timing way out or a misfire could cause it. One injector flowing way more than the others as well. Maybe timing on the injector opening?
Current Experiment: Project Twin-Charge 2022
Myst69
Driving Mom's Station Wagon
Posts: 33
Joined: Sun Jan 15, 2023 9:37 pm

Re: Need Basic Assistance ka24e-t

Post by Myst69 »

Wow I was not expecting that, the brand new Bosch wideband o2 sensor was faulty right out of the box! I swapped in a new “Chinese” one and afr started reading somewhat lol. I guess it’s on to my next question where would be a decent starting point on my VE table? My wastegate is dumping almost all boost at this time until I can figure a good starting point. I’m currently running 550cc dw injectors and my idle is fairly stable at 13.8-14.1 afr but as soon as I open the throttle it leans out considerably and trying to move the truck is almost impossible as there is no power and it runs very lean. Any input/assistance would be greatly appreciated.
Myst69
Driving Mom's Station Wagon
Posts: 33
Joined: Sun Jan 15, 2023 9:37 pm

Re: Need Basic Assistance ka24e-t

Post by Myst69 »

Wow I was not expecting that, the brand new Bosch wideband o2 sensor was faulty right out of the box! I swapped in a new “Chinese” one and afr started reading somewhat lol. I guess it’s on to my next question where would be a decent starting point on my VE table? My wastegate is dumping almost all boost at this time until I can figure a good starting point. I’m currently running 550cc dw injectors and my idle is fairly stable at 13.8-14.1 afr but as soon as I open the throttle it leans out considerably and trying to move the truck is almost impossible as there is no power and it runs very lean. Any input/assistance would be greatly appreciated.
importdude
Dont Question My Nissan Knowledge
Posts: 503
Joined: Wed Aug 29, 2007 2:41 am

Re: Need Basic Assistance ka24e-t

Post by importdude »

download the basemap and or use the map generator
adjust your req fuel
if you have auto tune feature use that it will buck but it will work
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