Tuning help

[1scls1z]

Hi, new member here. I just installed H/C/I on my 2002 z28 A4. I received a base tune to get the car up and running. engine mods are: tea ported ls6 heads, 227/231 112 cam, ported fast 92 w/ NW 92mm tb. fuel injectors are 36lb @ 3bar GTP units. The car runs ok cruising and in park at idle. Sometimes it wants to stall if I rev it in park and it randomly surges when approaching a intersection before coming to a stop. I have logged about 60mi so far. Obviously I did not expect a base tune to be perfect. I notice my STFT's are reading pretty high in the 12-1500rpm range and by looking at the VE there is a dip in that region. here is my tune file and logs. any and all help is greatly appreciated!!

[nkautz]

Looks ok. Get a wideband and start learning how to tune

[1scls1z]

I got the wideband now I just need to learn how to tune. lol

trust me I have read hours upon hours, but I read so may different opinions on how to tune.

do you have any suggestions where to start?

[nkautz]

http://www.4moores.com/280z/files/HP...structions.pdf

[Eaglegoat]

Let me know when those hours turn into days, weeks, months and then years. If it was easy everyone would do it.

[1scls1z]

http://www.4moores.com/280z/files/HP...structions.pdf

Thanks!! That is a good read and helps quite a bit. Just one more question, will this work using hp tuners standard? I have a wide band just no way to plug it in to hp.

[Eaglegoat]

Thanks!! That is a good read and helps quite a bit. Just one more question, will this work using hp tuners standard? I have a wide band just no way to plug it in to hp.

Several of the threads in this link will help with that. https://www.google.com/search?hl=en&...m+widebband+ac

[1scls1z]

Several of the threads in this link will help with that. https://www.google.com/search?hl=en&...m+widebband+ac

Thanks for the link...I actually read a couple of those threads prior but I could not wrap my head around how that works. I will study it more to get a better understanding.

[nkautz]

Widebands operate in 0-5v. So do some other factory sensors on the car. What you're doing is tapping into one of the factory 0-5v lines and hooking your wideband sensor to it instead. If it's the a/c pressure 0-5v you're tapping into , then you would log the a/c pressure PID in the scanner and you will see the wideband's readings instead of the actual a/c pressure reading. To see AFR instead of a simple 0-5v reading in the scanner , you will need to make a custom User Defined wideband PID based on the a/c pressure voltage. The rest of the configuration will depend on your wideband brand. PLX is (voltage/.5) + 10

[1scls1z]

Widebands operate in 0-5v. So do some other factory sensors on the car. What you're doing is tapping into one of the factory 0-5v lines and hooking your wideband sensor to it instead. If it's the a/c pressure 0-5v you're tapping into , then you would log the a/c pressure PID in the scanner and you will see the wideband's readings instead of the actual a/c pressure reading. To see AFR instead of a simple 0-5v reading in the scanner , you will need to make a custom User Defined wideband PID based on the a/c pressure voltage. The rest of the configuration will depend on your wideband brand. PLX is (voltage/.5) + 10

Ahh I see...that makes sense! Thank you for the explanation!

[onspeed]

If you've deleted EGR system you can tap into that wiring as well. I prefer that over AC sensor for obvious reasons.

[1scls1z]

If you've deleted EGR system you can tap into that wiring as well. I prefer that over AC sensor for obvious reasons.

my car is a 2002...no egr.