03 nsrt-4 boost

[lilkdude87]

i want to turn the boost up on my 03 srt-4 but i dont understand how to do it with the trinity and i also dont understand how to increase fuel to compensate for the boost. any help will be greatly appreciated

[duster360]

i want to turn the boost up on my 03 srt-4 but i dont understand how to do it with the trinity and i also dont understand how to increase fuel to compensate for the boost. any help will be greatly appreciated

All you have to do is load the 93 octane tune. The PCM's will see the boost increase and add fuel accordingly on its own but only up to about 18-19psi of boost. After that the limit is reached in the stock MAP/TIP sensors.

I strongly suggest you use Stock 04/05/Stage 1 injectors if you still have your stock ones(they're purple) and get yourself a wideband. 2003 SRT came with smaller injectors and the 93tune will nearly max out the larger Stock 04/05/Stage 1 injectors.

Using you wideband to monitor A/F(target 11.5-12.0:1) and the Trinity to monitor Knock retard, you may actually have to lower boost a bit when using the 93tune.

I have several tuning guidelines in the 'sticky' section here: http://www.srtforums.com/forums/f384/
there's a large group of experienced DSP/DST users there.