where do i start?

[jago]

hello, so where do i start with the ign map?

i'm using the orignal coil/dissy set-up to start with.

jago

[gunni]

Is there nowhere on the internet a map that is even remotely similar to your car,
and it is what btw?
what is the engine setup, compression, turbo or not, cam style, and so on

[jago]

It is a 1990 rover 827 fitted with a honda 2.7 v6 nasp, i have std compression of 9.0:1 and std cams, the exhaust manifolds are not standard nor is the inlet tract. oh and i have nitrous.

and alas not that i have found but it may have been done at some point. I know i am running 22degrees at idle. but from there i'm not sure how much to add and when.

[gunni]

22deg?
that´s a bit high.

Have you double checked the timing compared to crank location?
give this a try,
http://rapidshare.com/files/106753138/Ignition_timing_konfigurator_opstartsmap_v106.xls.html
I´ve run it before and it showed a timing map close to what I had made.

it will atleast get you closer then now.

[jago]

yeah last time at the rolling road they altered the ignition timming pot from 15 degrees to 22 degrees (max the pot does before warning light on dash) i got 15bhp all over from it. oh and that was on v-power fuel only.

thank for the link i'll have a look.

[gunni]

Somehow I though you had gotten it running.
didn´t know it was using a altered base timing.

[jago]

no, not even assy'd the ecu yet. I'm still gathering information to assemble it and make the base map. i'm hoping to borrow a good strobe to get the orignal ignition timming out, unless theres a better way of getting it.

[jago]

I got the timming out up to 5.5k measured it 3 times between idle and 1000 to make sure.

Here is my rpm /advance (map not measured)
RPM -- advance
800 -- 18
1000 -- 33
1500 -- 33.5
2000 -- 36
2500 -- 33
3500 -- 31
4000 -- 30
5000 -- 35
5500 -- 40

[rob@vems.co.uk]

Okay, so thats the timing when the engine is under no load.

You will find that the higher RPM stuff retards a fair amount when under load.

Rob

[jago]

cool, by what amount tho? i take it would not be advisable to use anyone elses ign map, but could i use the map trend and use my base values?