I have been doing a lot of ve learns on my car and have it running pretty descent. I am ready to hook up my new procharger d1sc to the motor now. Are there any big changes that I have to make before running it? I know the spark advance will have to be brought down. Is it better to lower the whole sa tables or to just retard the timing a certain amount of degrees per pound of boost? What really needs to be done as far as fueling changes? I want to get it running and driving correctly before I take it to be dyno tuned.

 

Be sure to install a 2-bar MAP sensor and set the option flag for it in the calibration.

There are two sets of tables that are used when in boost. A spark retard table and a fuel multiplier table. The spark retard table is a subtraction of SA from the 100 KPa column of the main SA table.

When in boost the ECM uses the 100 KPa column of the VE table to calculate the injector PW. This PW is then further modified via the PW Multiplier table. This table can remove fuel (negative values) or add fuel (positive values).

See the "BST - ..." entries in the XDF for these tables.

RBob.

 

1-1.3 deg per lb boost is common starting point

 

Thanks for the replies. I ordered the kit telling them that I wanted to be somewhere around 10-12 lbs of boost. This is my first tuning experience. Is this something that I shouldn't have a problem attempting? I'll try the 1-1.3 per pound of boost as a starting point. The car is also intercooled and running water meth injection as well.

 

Those blowers are rather linear with boost so timing curve and fuel curve is rather easy to do

 

Around what do people usually run as max advance? 25-26 degrees?

 

Reallly gonna depend on the setup, intercooler and how good the head/cam package works together

 

Alright, well I'll just start out with taking small steps at a time. I can't find anyone near me that tunes these cars.