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Pop n Bang on aspirated engine
Posted: Sun Mar 04, 2018 5:04 am
by McRae
Hi everyone
Do you think that it is possible to do the same 'funny pop" whith an S40 écu....or maybe with the futur software
Re: Pop n Bang on aspirated engine
Posted: Sun Mar 04, 2018 9:19 am
by rover200turbo
Just set the timing to -10 degrees on overrun and keep fuel turned on
Makes no difference if its nasp or turbo
John
Re: Pop n Bang on aspirated engine
Posted: Mon Mar 05, 2018 6:38 am
by McRae
Thank's , i'll try it next WE
Re: Pop n Bang on aspirated engine
Posted: Mon Mar 05, 2018 10:16 am
by Rob Stevens
you can only do negative ignition on MAP2, which you don't get on an S40. You could fudge the crank pick up point to fool the ecu, but why bother. Try a few 0's in the first ignition column and it might pop a bit.
Re: Pop n Bang on aspirated engine
Posted: Mon Mar 05, 2018 5:03 pm
by rover200turbo
You can put negative timing in the main ignition map of s60 as thats what i run in the low kpa loads just above idle
John
Re: Pop n Bang on aspirated engine
Posted: Tue Mar 06, 2018 2:35 am
by Rob Stevens
Ok, yes but not unless you have map sensor, you can't do it on the main tps vs rpm
Re: Pop n Bang on aspirated engine
Posted: Tue Mar 06, 2018 12:52 pm
by Rob Stevens
I'm wrong, (again) just tried it and you can go to -10 in the main tps vs rpm map. That has been changed sometime.
Re: Pop n Bang on aspirated engine
Posted: Sun Mar 11, 2018 7:15 am
by McRae
Yesterday , I tried with -10Deg but nothing and -10 is the max value so .....
May be it needs more fuel
Re: Pop n Bang on aspirated engine
Posted: Sun Mar 11, 2018 4:58 pm
by rover200turbo
No to pop and bang it needs to be lean
The flame front is slower mine pops iro afr 16.5 to 17.0
Even at 0 deg timing mine will pop it does your head in sometimes so my fuel has been turned off on overrun
To test this you can just lightly touch the throttle on overrun which will re introduce the fuel