caged
Well-Known Member
Its not that shocking, its a very common boost behaviour and power output by an engine thats equipped with relatively small turbo and a bleed valve.
Anyhow, heres another exampleshows afr and boost. Notice how the power reaches almost its maximum around 4800rpm and stays pretty flat up to almost 6000 and starts droping over 6k. Air fuel ratio is kept around 12:1.
http://www.rpw.com.au/shop/index.php?option=com_content&view=article&id=194:mitsi-cc-lancer-gsr-awd-turbo-164hp-atw&catid=75:mitsubishi-lancer-gsr-awd-turbo&Itemid=40
Yes the boost is a little unstable, but I bet you if the boost was reached to 12psi earlier and stayed flat to as long as it can the power would also reach to around 160hp earlier and would just stay flat in the same way and it would probably start droping even earlier.
I would still love to see his dyno graph as I dont think there is a major problem with his car from the information we've collected so far
Your on the money, thats normal for a jap CD5A from my experience. Even with big turbos, big cams and unported heads they still nose over up top. Id go a safc 2 with some evo injectors if you want to make some good power.
