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do as you please.
the people that say reliability = tune and blows up = bad tune are 100% right, but that doesnt mean you arent capable of doing a better job than the monkeys before you.
its quite simple, you use an na map for the na part of the table, and a conservative figure like 10btdc for advance thereafter.
you set the boost cut at the level you want, and go for it.
then you tune the afr with the perfectly accurate bosch/innovate/aem setup which hundreds of thousands have made mega power on and is accurate to 0.1 afr at quite high speed down to 12.5:1 at 100kpa, 15:1 at 0kpa and 10:1 at 150kpa or whatever you plan to boost to. you set the boost cut at the level you want, and go for it.
the way to go about it is to roll through a gear again and again gradually getting higher load happening, and each time stopping at a slightly higher rpm after having fixed the afr error from the previous run.
10btdc is pretty retarded, so running like that under boost will heat things up a lot, you will want to work on getting cruise right between loaded runs
then its just a matter of pulling timing forward gradually till you start to get some knock, and then back it off a few degrees.
at 7psi intercooled on 98ron with 10:1 comp and a superior combustion chamber design, you would have to be a total monkey to screw it up. you could push higher psi into it if you were good...
anyway, as i said at the top :
do as you please.
but one word of solid advice :
dont base what you do and dont do on other peoples comments, mine nins or otherwise, do your own homework, and make intelligent decisions.
in this case, read the documentation about the bosch sensor, old gen or new, and see for yourself that its totally fine and infact good quality and high performance.
if you want to measure to 0.01 afr (why?? just why????) then sure, you need sophisticated gear like the creators of ms have in their lab, but for us tuning, the difference between 10.8:1 and 11.2:1 is so insignificant that you really dont care, and furthermore, you can control afr to that sort of level only with a ms2e setup anyway, AND, the innovate/bosch WILL read more accurately than that anyway...
i just spent a few hours messing around over msn helping a dude out with his ms issues. the root of those issues was that someone else had advised him to set it up in an inferior way, and compounding the issue was that he had followed the build instructions for the other type of setup. from the symptoms i guessed what the issue was, asked a few questions and found out what was wrong. i then convinced him to reconfigure it in the way he should have in the first place. after that and a little bit of fiddling he had it running sweet. totally sweet.
moral of the story, listening to other peoples largely BS advice (this is the internet, most knowledgeable folk DONT hang out here) had screwed him up and left him with a bad setup.
the same could happen to you if you listen to the sort of people that say things like
"bosch/innovate sensors are fantastic and flawless and you should trust them implicitly" (ie, me)
OR
"those sensors are low quality and shouldnt be relied upon to tune a sub 300hp engine"
or anything else.
you need to do it because YOU KNOW its the right thing to do, not because joe blogs said so. even if its me :-p
lol, now go and [fizzle]ing read!!!
fred.
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