platinum00

I have a profec Spec II, and was going to start messing around with the "start boost" setting which will increase my spool time a little bit. Its currently set at "0" so im sure i can get a little bit better spool time.

Anyway. If I do mange to get better spool time, do I need to retune the motor. Im not quite sure how fuel tables and timing are calculated during boost.

Thanks guys,
platinum.

igo4bmx

it may depending howmuch sooner boost comes in.

USDM 4G VTEC

anything that affects the air flow characteristics of a motor, requires a retune
a retune doesnt nesesary means the whole powerband, but the areas affected

platinum00

i guess i will leave the setting alone until i go back to the dyno.

anyone have experience with how much sooner spool is noticed using this?

platinum.

ELSpool

It can be quite a bit difference in responce. If I crank the gain on the original Profec B, I can get spool at least 500rpm sooner. However, I find boost to be very unstable once it reaches the desired boost level.

TheShodan

iTrader: (14)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ELSpool &raquo;</TD></TR><TR><TD CLASS="quote">It can be quite a bit difference in responce. If I crank the gain on the original Profec B, I can get spool at least 500rpm sooner. However, I find boost to be very unstable once it reaches the desired boost level.</TD></TR></TABLE>

that's if the SET GAIN is out of proporton with the actual GAIN on the Profec B Spec II.

platinum00

500rpm sooner. wow, that more then i thought.

i could get a BB turbo and play with this setting and gain 500-1000 rpm sooner spool.

huh, and i always wonder were my money goes

platinum.