After studying the datalogs of the weekend, I found that the launches were at around 160s kPa MAP. I launched the car by feeling the engine and didn't wait long enough to have the MAP build to a higher level. I wasn't sure how well the new BOV staging boost level control system was going to work out so I played it safe and decided to work up slowly on the staging procedure to make sure I didnt' run into trouble.
I've been working more in the garage on the BOV staging tuneup and got the rpm and map to level out nicely at 5600-5700 rpm and 179-183 kPa MAP. The nitrous system acts to control the staging rpm and map level. Surprisingly the nitrous system gives a soft rev control. Very cool.
With more work done to the fuel table in the section leading up to and including where the engine will sit during staging, I've been able to increase the boost rise curve in relation to engine rpm. Using 145 kPa MAP as my benchmark with the 91mm, originally I would reach 145 kPa by a rpm that was in the 6,000s, then it went to 5700 rpm for a long time, then 5400, then 5200+, and now it's down to 5080 rpm. By 5700 rpm I'm now building 180 kPa MAP. Also, the ratio meter is now reading a flatline 14.64:1 through the whole ALS activation region showing in the datalogs. An interesting way to tune your high performance turbo engine. Tune to 14.64:1.
I've been working more in the garage on the BOV staging tuneup and got the rpm and map to level out nicely at 5600-5700 rpm and 179-183 kPa MAP. The nitrous system acts to control the staging rpm and map level. Surprisingly the nitrous system gives a soft rev control. Very cool.
With more work done to the fuel table in the section leading up to and including where the engine will sit during staging, I've been able to increase the boost rise curve in relation to engine rpm. Using 145 kPa MAP as my benchmark with the 91mm, originally I would reach 145 kPa by a rpm that was in the 6,000s, then it went to 5700 rpm for a long time, then 5400, then 5200+, and now it's down to 5080 rpm. By 5700 rpm I'm now building 180 kPa MAP. Also, the ratio meter is now reading a flatline 14.64:1 through the whole ALS activation region showing in the datalogs. An interesting way to tune your high performance turbo engine. Tune to 14.64:1.