hi from Melbourne AUS

[tkdrifto]

hey people,

my name is Tom and im just about to start playing around with an E-manage Blue on my car.

only recently started playing with self tuning not too long ago. mostly just with air/fuel controllers like the A'PEXi SAFC and the Blitz R-Fit.

ive been using a Zetronix wideband sensor and ive learnt how to get my target AFRs by air fuel correction, but i feel its time i need to start playing with ignition timing to get that extra bit more from my car.

At the moment, my only tools are the wideband sensor and an EGT gauge but im looking into getting something to determine knock levels.

my car is a nissan silvia CA18DET with a IHI PE1420 turbo, GTR 440cc injectors, larger fuel pump, Z32 Airflow meter, intercooler and exhaust and im hoping to run about 17-20psi of boost.

any tips on where to start with the ignition map would be greatly appreciated.

cheers,
Tom

[Accord2nrz]

Welcome Tom! I pray you find this community to your liking.

As for your question you should, as always determine what your ultimate power goal is and how much boost your wanting to run. Ignition timing should truthfully be done only on a dyno becuase it's just one of those things that are dangerous however, I believe the reccomended degree adjustment is to retard the timing 1 degere for every 2 lbs of boost.

What would this mean to you well on your map you'll have to gauge how you drive when boosting and then assume a median value(average) of boost per rpm and go from there. That's my first guess but be extremely conservative. too far out of tolerance either way and well, you know how that goes :)

No pressure or anything because it's really fun! as with all things we get out of it the same as the time we put into it so take ur time and you'll be good.

Again welcome...and im shuttin up now :p

[Dzaster]

Welcome Tom. I tried using a TurboXS Knocklite back when I was running on a computer that had no built-in knock sensor, thus no knock retard safety feature. It's supposedly a good product. I myself could not set it up right, or so I thought. Plus, for something like knock detection, it would be best to have it on a dyno and have them confirm that when your knock device alerts of knock, that there truly is knock.

Other than that, I think Accord2nrz suggests a pretty good "rule of thumb"

I removed 1psi per 1lb. of boost when I was running on my naturally aspirated computer. A friend stated that my computer liked to advance timing.