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s15 back firing on decell ??
Posted: Sat Sep 26, 2009 10:34 pm
by chris2712au
got me stumped what is going on with it... any ideas I thought it might be my rear housing on the turbo but not sure as I have also heard others with the same prob when they went to a free flowing exhaust ??
Posted: Sat Sep 26, 2009 10:42 pm
by TM_S13
it's not uncomon to get a bit of back firing on decel with a free flow exhaust...
Posted: Sat Sep 26, 2009 11:09 pm
by chris2712au
can we reduce it or eliminate it ? i see that map ign advance on decel..??
Posted: Sun Sep 27, 2009 8:47 am
by Legionnaire
If you mean flames from exhaust on deceleration, I actually like how it looks to be honest
But I guess you should really reduce amounts of injected fuel in high rev/low load area, i.e. the leftmost column of the fuel map
Posted: Sun Sep 27, 2009 11:45 am
by Matt
I'm thinking the fuel cut/recover tables. Same issue on my R34 which I need to fix up by adjusting where it does the cut
Get a log with the rpm vs injection to find where the injection is when you here it pop. Try and cut it out earlier
If you have S14/S15 I havent got the fuel cut/recover tables for that yet but its on my todo list
Posted: Sun Sep 27, 2009 1:19 pm
by chris2712au
2k and under tps closed no load just coasting in gear.. but mines an s15...
