25/30 Neo V 26/30

[Huzqld]

Progress

[Huzqld]

Got it going, excuse the crappy red breather lines.

Cruises and idles very nicely. Limiter set at 4500 for now and will not drive it now till it goes for a run-in tune in few days.

Would the tune be out by a fair bit? Difference being New motor with higher comp and the twin cam head vs old motor low comp and sohc. Everything else is basically the same.

[luke gtr]

I'm going to let someone with more knowledge answer that.

[Ben C34]

No AFM equals heaps different tune.

Edited February 10, 2015 by Ben C34

[Huzqld]

Yeah I suspect it'll be a fair way out, surely the dohc will be flowing a lot more at all revs as well as the extra comp. and ecu has no way of knowing

[luke gtr]

No AFM equals heaps different tune.

but he already had no afm (my understanding).

[iruvyouskyrine]

Bens saying that if he did have an AFM it would be okay(ish). But he doesn't. So it isn't.

[Ben C34]

Exactly.

Its due to the fact the AFM reads the actual amount of air entering the engine so fuels according to that.

Using a map sensor the ecu calculates the amount of air based on pressure and temperature. As the different setup will draw more air at the same pressure, the fuelling will be off.

In both cases a tune is required, as the ecu is going to reference different cells in different conditions, however if the car previously had an AFM and still did with new setup, the fuelling would be very close still.

[luke gtr]

Ah, gotcha.

[Simon-S14]

get a tune asap, you dont want to baby it and run an engine in at the same time

[Huzqld]

Yeah I agree, I'm not going to drive it till it gets a tune. Hopefully Saturday. Had a leaking front crank seal, fixed that today so hopefully good to go.

[Huzqld]

What temp thermostat does everyone run/ recommend? Currently has a 89 in it, just wondering if I should go a bit colder before the final tune?

[Blackkers]

I wouldn't worry too much about the thermostat.

How'd you go with the run in?