Hi all,
This is my Q5 3.0T daily that I've been tinkering with a bit. Car is largely stock except for K&N pod filter in stock air box and upgraded intake hose (RKX and highly recommended) I've attached the original OEM file and my latest Stg1 tune for 98ron for comparison. I've succeeded in getting my 0-100kmh down to 4.8 sec but have some areas that I'd like to improve on.
MAP plateaus off at around 194kPa except for the odd bump up near 198kPa. Are there any tweaks to get to ~198kPa or even 200+ across a larger percentage of a WOT run? This might be of interest to some, I could not exceed ~191kPa for love or money prior to the intake upgrade, so this inexpensive mod definitely helps maxing out stg1 tunes at the top end on the 3.0T. An open top airbox gains a little more cylinder airmass in cooler ambient and IAT's but loses a lot in warmer weather or when heat soak is present, so I've experimented with removing the airflow director inside the box that angles the incoming air downwards and this has given a good middle ground in terms of not increasing IAT's, allowing some of the sweet SC sound to be heard and reduced airflow restriction.
For fueling I've mainly used OEM base lambda targets but a modified enrichment table, mainly OEM for first 2-3 seconds of demand, then gradually increasing the enrichment from about 4-5 seconds of demand. Has anyone found a good enrichment strategy? Are there any gains to be had in adding fuel in the first few seconds of enrichment or would modifying the base fuel tables provide any benefit, on initial tip-in?