Hi Everyone, I have had my set-up running for about 2 years now. I would like to move more into boost, but it's difficult because it's a motorhome so it is almost always towing in a way because of the weight. Where I am stuck is that my EGT's keep climbing in boost. AFR is 10.8-11.2 and rpm is 2200-4200 when this happens. I am currently running only 3 psi of boost and being cautious. Timing is set to average of 8* in this area (0.9 grams-1.2 grams in the cylinder). I have a big intercooler in the set-up and IAT's are only 3*C over ambient. So 33 C on a 30 C day.
I am getting only very rare random knock mostly in throttle transition so I don't think the timing is causing knock really. I just don't know if 8* is way to aggressive and which way I should go with it (this is the first motor I have tuned). I saw some sample tunes with timing down to 0.20* and some as high as 20* in boost?
EGT's climb over 1550 F in about 30 seconds. I am running 2 bar mod, PE and BE enrichment crossover.
Here is the tune file
2 Bar VE 10 BE plus PE.hpt
Thanks for the help in advance!
Jonathan