well the time has come.. since the street port likes a bunch more fuel than the stock port motor (damn overlap) I just ordered some 1000cc injectors for my primaries. hopefully this should give me the extra headroom i need. at around 15psi im around 85% duty cycle.. no good =[

*sigh* i hate retuning =]

 

85%? are you tunning for more boost than that?

 

85% duty cycle is basically the most you want to run...

but 15 psi is also at about 86 load which i assume is what you thought i meant...

yeah i want to be able to run 17.5psi on the street with this engine and not have maxed out injectors =]

 

nyt I have some free software to help you rough out a new map.

http://www.angelfire.com/wizard/freqgengui/
I wrote it and it works ok but give it a go.. its at the bottom Rotary pulse recalculator.

Regards
Michael Smith

 

yeah its no big deal for me to really retune... but im going to probably do staging a little different now that the primaries are double the size =]

 

My program can sort any simple parameter including injector sizing and staging close enough to get a reasonable map. This make tuning just a little quicker as you already have the characteristics in your current fuel map. I used it to help convert your map to my engine and it worked well. Actually thats why I made it to save doing lenghty calculations that it is easy to make recalculations without large errors.
Michael Smith

 

cool ill take a look..

 

woot.. so rx7store (go figure) sends me some injectors that they tell me will fit primaries in my FC... i figure its same price, theyre reselling RC.

NOPE.. totally different injectors, not even close.. so i send em back and get 2 1000cc's from rc.

******* things fit perfect and flow so much more than stock. god im glad those are gone. put those bitches in as soon as i got home and started doin a bit of tuning.. car is easily drivable, but still way rich up top (even taking out the 20% fuel that i was supposed to gain, guess it was more =] fresh clean injectors...)

anyway... 1000cc primaries, car idles and runs beautifully in vacuum.. will post some maps later when i get it tuned better.