VersaTune User Forum

My corksport internals will be delivered tomorrow, so I'm working on writing a tune today. My questions are :
1- is my understanding correct that my target rail psi shouldn't really change?
2- what is a good starting point for load targeting?

I'm running a stage 2 corksport tip sri, hks bpv, catless dp, race pipe, and custom 2.5" aero turbine exhaust. Engine is stock. The tune I have in it is working beautifully, maf is calibrated so max fuel trim deviation is 1.8% and desired vs actual afr is spot on. My rail pressure holds to within about 100-150 psi of commanded with a max of 1769psi commanded. my wgdc adjustments and requested load multiplier accel/deceleration settings have eliminated all boost spikes.

Just looking for a little guidance on starting loads and clarification that the spill valve still dumps at 1800 even after internals are installed. I'll take it from there, and thanks!

1. my recommendation is to leave the fuel rail pressure target tables unchanged. The aftermarket internals will move more fuel anyway and will exceed those pressure values, and if you set the targets too high the excess of pressure will make the PRV work too much and eventually fail.
2. get the load target tables from a high load tune and work you way up from there. With a stock turbo and some exhaust mods you should be able to go up to load 2.2 in the mid range (3500-5000) and adjust the load curve from that point on based on the WGDCs you get.

Once you adjust your tune and take a log with the internals you can post some logs using the preset from the URL below:
https://www.dropbox.com/s/hmw8hc97atbqp ... vtpre?dl=0

That's exactly the info I was looking for. Thanks for the quick reply and the knowledge!