XSS Posted January 10, 2007 Report Share Posted January 10, 2007 O.k, I am pegged on my 42#rs that come with the Radix according to a scan (99%IDC) I need to know what are the easiest injectors to tune for that are over the 42# rating. I know I have to cut and splice because ther are no plug and play avaialble. Any suggestions? Some said the ford SVO injectors were not too difficult to tune for but I am looking for the easiest ones as my tuner is not the most experienced. HELP!!! Quote Link to comment Share on other sites More sharing options...
buggle_96 Posted January 10, 2007 Report Share Posted January 10, 2007 .... I am looking for the easiest ones as my tuner is not the most experienced. HELP!!! <{POST_SNAPBACK}> You may want to start with this problem first.... Quote Link to comment Share on other sites More sharing options...
wait4me Posted January 14, 2007 Report Share Posted January 14, 2007 Usually mototron 60lbs are pretty good to work with. BUT you have to specify a lower minimum on and off time so they will be smooth at idle and will have permission to shut more at low rpms. Quote Link to comment Share on other sites More sharing options...
04CHASE Posted January 14, 2007 Report Share Posted January 14, 2007 (edited) i dont know if i would trust someone that doesent really have any experience . the mottotron 60lbers work great thus far. im trying to figure out whats the next best choice after those? becaus eim almost maxing mine out now. Edited January 14, 2007 by 04CHASE (see edit history) Quote Link to comment Share on other sites More sharing options...
XSS Posted January 15, 2007 Author Report Share Posted January 15, 2007 Thanks guys. Are the SVOs difficult? I am thinking of buying software and trying this myself. Would I just have to change the flow rate table and be done with it for those? Quote Link to comment Share on other sites More sharing options...
04CHASE Posted January 15, 2007 Report Share Posted January 15, 2007 svo'r are also a good injector bu tthey are rated at about 50 lbs at 58 psi so its not a big step up but it it is biiger. they are a little more reasonably priced then the 60's . if i had a choice i woul dhave went with the 60;s to begine with. Quote Link to comment Share on other sites More sharing options...
Krambo Posted January 16, 2007 Report Share Posted January 16, 2007 I will be doing the SVO's soon and let ya know. I caved in and said I am satisified with how my truck is running now so the little extra headroom the SVO's will provide will be enough for me. I am running 100% IDC with meth using the 42#ers but I also have the 03 return style fueling which gives a boost to the injectors as it is. I scale my flow rate of my injectors in my tune because of this (others may not agree) as I see higher flow rates as the FP increases (63-64#s max). Some may just list 50#s and pull fuel in the adders and such but this is how I do it and it works for me. Quote Link to comment Share on other sites More sharing options...
StinkyradoSS Posted March 29, 2007 Report Share Posted March 29, 2007 Get an after-market fuel regulator, set the pressure to 80 psi, then get it tuned again. and see how low your cycles drop. why is it that everybody that pick up a turbo or supercharger does not pick Up the fuel regulator along with it. Quote Link to comment Share on other sites More sharing options...
SSThunder Posted March 29, 2007 Report Share Posted March 29, 2007 I will be doing the SVO's soon and let ya know. I caved in and said I am satisified with how my truck is running now so the little extra headroom the SVO's will provide will be enough for me. I am running 100% IDC with meth using the 42#ers but I also have the 03 return style fueling which gives a boost to the injectors as it is. I scale my flow rate of my injectors in my tune because of this (others may not agree) as I see higher flow rates as the FP increases (63-64#s max). Some may just list 50#s and pull fuel in the adders and such but this is how I do it and it works for me. Did you run that 11 sec pass on the stock injectors? Quote Link to comment Share on other sites More sharing options...
chpspecial Posted March 29, 2007 Report Share Posted March 29, 2007 Get an after-market fuel regulator, set the pressure to 80 psi, then get it tuned again.and see how low your cycles drop. why is it that everybody that pick up a turbo or supercharger does not pick Up the fuel regulator along with it. Because we have a returnless fuel system and there is no regulator for us to use. Only the pre 04 trucks can do that. The only way around that is to do what chase is doing and create a return type fuel system, then can a fuel regualtor be used and fuel pressure can be steped up. Quote Link to comment Share on other sites More sharing options...
Krambo Posted March 29, 2007 Report Share Posted March 29, 2007 Did you run that 11 sec pass on the stock injectors? Yes. the 42#rs plus meth. Quote Link to comment Share on other sites More sharing options...
.justin. Posted March 29, 2007 Report Share Posted March 29, 2007 (edited) Get an after-market fuel regulator, set the pressure to 80 psi, then get it tuned again.and see how low your cycles drop. why is it that everybody that pick up a turbo or supercharger does not pick Up the fuel regulator along with it. That will work fine up to about 72.5psi of rail pressure. The 8.1L Marine injectors operating range is only up to 5 bar pressure, where 80psi would be 5.5 bar. http://www.racetronix.com/Manuals/Injectors/multec2_inj.pdf Even still, those injectors are 43.82# at 58psi. At 80psi (if possible), would only flow 51.46#/hr. Mototron 60s (63.2# at 43.5psi) are great... at GM pressure they flow a whopping 72.3#/hr. Easy to tune for as well, just adjust the Injector pulse width voltage adjustment table and the minimum pulse width tables and you should be just fine. Edited May 23, 2007 by .justin. (see edit history) Quote Link to comment Share on other sites More sharing options...
dewmanshu Posted May 23, 2007 Report Share Posted May 23, 2007 (edited) That will work fine up to about 72.5psi of rail pressure. The 8.1L Marine injectors operating range is only up to 5 bar pressure, where 80psi would be 5.5 bar. http://www.racetronix.com/Manuals/Injectors/multec2_inj.pdf Even still, those injectors are 43.82# at 58psi. At 80psi (if possible), would only flow 51.46#/hr. Mototron 60s (63.2# at 43.5psi) are great... at GM pressure they flow a whopping 79.3#/hr. Easy to tune for as well, just adjust the Injector pulse width voltage adjustment table and the minimum pulse width tables and you should be just fine. When yourself and waitforme say just change minimum inj pulse, ect ect ect just curious if you have a formula for this yet (return systems)? Considering the mototrons specs, gain=.110ms/mg offset=.055ms turn on time= 1.14ms at 14volts turn off time= .85ms @ 600KPa Like if one of your customers comes to you with a radix SS and wants you to mail order a 60# tune. WTF changes specifically are you doing and why? just asking...you know me, curious. Edited May 23, 2007 by dewmanshu (see edit history) Quote Link to comment Share on other sites More sharing options...
zippy Posted May 30, 2007 Report Share Posted May 30, 2007 Get an after-market fuel regulator, set the pressure to 80 psi, then get it tuned again.and see how low your cycles drop. why is it that everybody that pick up a turbo or supercharger does not pick Up the fuel regulator along with it. The fuel pressure regulator on an 04' and up is in the tank. It won't do any good to do that. Besides, an FMU is only a band-aid, not a proper fix. Quote Link to comment Share on other sites More sharing options...
XSS Posted June 8, 2007 Author Report Share Posted June 8, 2007 Bump! So if I get the motron 60's all I need to do is take my injector table and put the values across it? I have HPT and want to do this myself. If my tune is dialed in, than I shouldn't have to touch anything else right?...except for the idle tuning. I do know my IFR table is scaled right now for the 42#'s. I am not sure why. should I do this with the 60's? My current table is 42# up to about 4000rpm and then a higher value for the remaing cells. I guess it is because it is an 03 return style and I will see more FP at the higher RPMs? Justin, any more info would be great!!! Quote Link to comment Share on other sites More sharing options...
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