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Timing questions.. step retard.
Posted: Sun Jun 07, 2009 7:23 pm
by ls_dx
Ok so I set up my map, do the step ign retard set up my boost scalars and end up with like 10deg @ 22lb. does this sound really low? Low to the point of having high EGT's ? what is a good number for final timing? wiseco flat tops roughly 9.0:1. the stock ign corrections disabled. what do the pro tuners usually have final timing at? conservative but max power. 91 octane. I have no dyno to tune on. thanks
Posted: Sun Jun 07, 2009 11:49 pm
by Bugermass
conservative but max power both of these can't go in the same sentence.. 10deg at 22PSI is pretty aggressive for pump gas.. I usually hit 10 deg by about 18 PSI on pump gas.. Race gas is another story all together.
Posted: Mon Jun 08, 2009 6:07 pm
by naturalalloy
pump is 91 in Texas? For reference on my 81.5mm b18/b16 head, I'm running ~14.75* at 10psi on 91 octane and 8.8:1 CR with 11:1 AFR...no knock as it is, but I do have timing corrections in place for ECT and IAT.
Posted: Tue Jun 09, 2009 10:57 am
by ls_dx
Its a good idea to have the stock IGn corrections disabled in boost, right? because I was lookin at crome a while back, and It seems like the stock ecu throws an additional like 5 or so deg in at various points...
Posted: Sat Aug 17, 2013 1:33 pm
by antoni
naturalalloy wrote:pump is 91 in Texas? For reference on my 81.5mm b18/b16 head, I'm running ~14.75* at 10psi on 91 octane and 8.8:1 CR with 11:1 AFR...no knock as it is, but I do have timing corrections in place for ECT and IAT.
i have run 17* at 14.8 psi on pump i think i have lucky it think?