gtred

Is it advisable for a megasqirt novice to try to change up the rev limiter trackside? Im running out of gear way before braking zone. Id like to move it from 7k to 7400.
or, is it advissble to "drive" awhile on the soft rev cut?

2004msm, ms3

Braineack

iTrader: (62)

Doesnt the MSM have a reduced limiter compared to the rest?

DNMakinson

iTrader: (3)

Yes. Factory is 6500.
EDIT: removed "IIRC", because I had.

curly

iTrader: (25)

Yeah I heard you're running without the chicane, probably should of upped that. I'd try 7200 for now. I wouldn't necessarily stay on the rev limiter.

but the tune is safe up there. But it's not the greatest for your tired engine.

aidandj

iTrader: (5)

Holy ****, PIR without the chicane sounds ridiculous.

If it is a fuel cut limiter it is fine to sit on it. Spark cut could hurt it.

gtred

Luckily the rain has come. Im sure i'll be carrying less speed. Nice tune curly... this thing runs strong!

curly

iTrader: (25)

It's spark and fuel

aidandj

iTrader: (5)

I wouldn't sit on it for a long time. But hitting it shouldnt hurt too bad.

drizzay222

Another novice here working through MS setup. Is best for engine longevity to run spark then fuel cut? Just fuel? Will be hitting limiter during autocross.

gtred

It's drying up for today's race. Im on the rev limiter for apprx the length of a football field (from the chicane to just after the hump). Im wondering if it'd be more damaging to feather it (and go closed loop\ lean?) Or,to just ride the soft cut?

I worry that if I go into TS and merely bump the limiter to 7400, that I might not have a fuel/spark map there... as it was only tuned to 7k. Is this how ir works?

curly

iTrader: (25)

It interpolates. So the last known value is still used. Since volumetric efficiency is lowering at higher rpm's, you only go a little rich.