Carbed or EFI timing
Carbed or EFI timing ? How much timing are you guys runing. The pills that come with the msd box are around 36* at wot. I compaired that with a friends efi timing curve and his was around 28* at wot.We have the same cam but mine is a 6.0L the only other diff is efi and carbed. His car was tuned on a dyno so i know the tune is close to where it needs to be.It put down 398rwhp/388rwtq cam only m6. I kicked it when i had a #2 pill in my msd box and it was pulling good. I put a timing curve in the box that matched his curve . We went and kicked it again and it pulled alot slower.I am afraid to put the 36* back in and have detination problems which is hard for me to detect with loud exhaustand no knock sensors. Any info would be a great help
Last edited by 6L.IROC-Z; Jan 1, 2007 at 09:07 PM.
I have been wondering the same thing. I know on sbc i set it to be all in around 2200 at around 36 degrees. Had a good converter of course. I dont think msd would have the pug in pill be way to much timing.
I understand every car is different but there is got to be a point where 10.5to1 comp, 93 octane starts to to have to much timing and detonates no matter what car its in. my ? was how much timing are you guys running and do you think 36* is to much, not enough. The tracks are closed and I would like to get the timing closer before I go to the dyno.The spark plugs look very good in reference to air/fuel and show no signs of detonation
Teching In
Joined: Dec 2004
Posts: 43
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i ran all 6 pills at the track with no change in e.t.
makes sense to me cause there all 36 deg. total and i have a big converter.
its also my under standing that fi needs less timing because
the fuel enters at such a high pressure.it also enters closer to the chamber.
makes sense to me cause there all 36 deg. total and i have a big converter.
its also my under standing that fi needs less timing because
the fuel enters at such a high pressure.it also enters closer to the chamber.
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Im no expert at all but when reading about blow through carb setups and timing on other forums people talked about how much they could run with a carb and would never be able to run as much with FI. I cant tell you why but people were saying it.
Originally Posted by 6L.IROC-Z
you are correct s10slepper. the box only knows rpm not wot. sorry if the wot statment was misleading
The way i understand the map table is that will add timimg at a given vacum, the lowest value on the timing side of the table is zero. So i dont think it will retard timing. but im still learnig the tuning program that came with the 6010 box. i would call msd about that.
On The Tree
Joined: Mar 2006
Posts: 144
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i will be using the 6010 with megasquirt controlling the injectors. Form what I have read online I think it can compensate for boost. I have not yet got my car running but I have played around with the software. As far as I can tell it only adds timing, unless the x-axis is in increasing psia of boost???
I would love to find out if it can to boost retard
I would love to find out if it can to boost retard