knock sum 22 , what did i do wrong
#17
Evolved Member
Thread Starter
with caution as excessive reduction in timing can lead to much hotter egt's
which can cause other problems,
i would possibly prioritize them as:
1)increase octane
2)retune for mods
3)reduce boost
4)reduce timing
but you'll probaly have your own thoughts on that too
![Roll Eyes (Sarcastic)](https://www.evolutionm.net/forums/images/smilies/rolleyes.gif)
#18
Evolved Member
iTrader: (22)
just as a note to others reading this thread, option 2 should be done
with caution as excessive reduction in timing can lead to much hotter egt's
which can cause other problems,
i would possibly prioritize them as:
1)increase octane
2)retune for mods
3)reduce boost
4)reduce timing
but you'll probaly have your own thoughts on that too![Roll Eyes (Sarcastic)](https://www.evolutionm.net/forums/images/smilies/rolleyes.gif)
with caution as excessive reduction in timing can lead to much hotter egt's
which can cause other problems,
i would possibly prioritize them as:
1)increase octane
2)retune for mods
3)reduce boost
4)reduce timing
but you'll probaly have your own thoughts on that too
![Roll Eyes (Sarcastic)](https://www.evolutionm.net/forums/images/smilies/rolleyes.gif)
#20
I would change the fuel to Tesco 99 or Shell VPower, both have an octane rating 2 points higher @ UK 99 ron.
Most JDM VIII's I've logged show knock sums up to 3, running 99 ron fuel and a decat.
Most JDM VIII's I've logged show knock sums up to 3, running 99 ron fuel and a decat.
#21
Evolved Member
Thread Starter
ok got the apexi controlling boost after a fight getting the stock
vacuum pipes off the actuator
took it out for a test drive and i do have control of boost now
base boost is .8bar and i ran a 1.2bar which felt much smoother
than the 1.35bar from stock, i haven't done a log yet but i will soon,
atm the apexi doesn't seem to hold the boost as steady as stock but its
very very little deviation, the apexi duty cycle is still flat so once i play with it or
see what learn duty cycle comes up with boost should be solid
vacuum pipes off the actuator
![Roll Eyes (Sarcastic)](https://www.evolutionm.net/forums/images/smilies/rolleyes.gif)
![lol](https://www.evolutionm.net/forums/images/smilies/lol.gif)
took it out for a test drive and i do have control of boost now
![Thumbs Up](https://www.evolutionm.net/forums/images/smilies/smilie_thumbsup.gif)
base boost is .8bar and i ran a 1.2bar which felt much smoother
than the 1.35bar from stock, i haven't done a log yet but i will soon,
atm the apexi doesn't seem to hold the boost as steady as stock but its
very very little deviation, the apexi duty cycle is still flat so once i play with it or
see what learn duty cycle comes up with boost should be solid
#24
Evolved Member
Thread Starter
here's the 3 pulls, i did go 100% throttle from 2000rpm so don't know what happened there!
boost was at 1.2bar down from 1.35
.
i did 1 run at 1bar and knocksums were down to 8max!
.
http://www.keepandshare.com/doc/view.php?id=688484&da=y
.
boost was at 1.2bar down from 1.35
.
i did 1 run at 1bar and knocksums were down to 8max!
.
http://www.keepandshare.com/doc/view.php?id=688484&da=y
.
![](http://img.photobucket.com/albums/v333/leesturbo/3pulls.jpg)
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