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yeah Brad did it before I did but the idea is Posted by jak [Email]  (#195) [Profile/Gallery]
(more from jak) on Sat, 8 Apr 2006 11:29:27
In Reply to: Re: I think you mean this pic... JAK, more questions..., Simon S, Sat, 8 Apr 2006 11:10:25 Members do not see ads below this line. - Help Keep This Site Online - Signup |
that because the LH system is batchfire the limitation on injector size has to do with how far you can turn them off because each injector swirts 4 times per combustion event, because of this you can sorta stretch a smaller injector to mabey make a tad more power but it can be hard to get a low enough injector on time to reduce fuel flow but still lift the pintle, ball or wafer off the seat & this can lead to missfiring at idle, this will limit injector size to mabey 40 lb hour at the verry most probably without closed loop operation at idle
the answer is to run a normal size set as primarys like #30s & on the secondarys you can run them as big as you want & use a secondary driver to drive the secondary set & taper in fuel as the primary set run out, this can be done verry effectiveley, this would be true piggyback
I was thinking of lacing in a secondary LH ECU which would be realy easy with a second pigtail & solder :-) but you would run second dedicated hot & signal out to the secondary injectors the secondary ECU could run verry low dutycycle & be tuned to taper in the second set as mentioned above
I still have that manifold & if I dont use it on the SPG to make the "aprox 300WHP" as per the purchase agreement with the new owner I will probably sell it, as it was origionally a comissoioned piece which was never paid for....& not actually intended for my car
tae care
& have a great weekend
JAK
, Sat, 8 Apr 2006 11:29:27 <-- Viewing This Message, Sat, 8 Apr 2006 15:47:08
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