1BadMoFo

iTrader: (1)

hey racetronix, I just tried buying the 37#ers online but ran into soem technical problems...PM sent!

1BadMoFo

iTrader: (1)

ok, maybe not...you don't accept emails or PM's...???contact me please

scottfett2000@yahoo.com

Racetronix

iTrader: (2)

sales@racetronix.com

pkincy

iTrader: (1)

I, too, am going to buy a set of Delphi 37s from Racetronix, however I happen to have my car apart and the fuel rail in the garage and both the stock and SVO 30s laying around. So I went out and test fit them. I don't see a problem. There is a bit of a lip (say 1 mm) on the stock injector tops that isn't on the SVOs but the part of the fuel rail that comes close to the injector is quite angled and would easily feed the SVOs as well as the Delphis.

Perry

ls1 1990 VN

I read in another thread that we tend to use the old school philophocey in selecting injectors, that closer to what power we have is better. When we should be leaving a bigger margin. You would be better off using Delphi 42#.

WS6FirebirdTA00

iTrader: (33)

how do you know when your at a high duty cycle? im lookin to get about 450 rwhp and am going with 01-02 injectors (28.8) and 255 intank pump with wiring kit. what kinda duty cycle would that make me get to? sorry to bust in on your post but it got me thinking

Racetronix

iTrader: (2)

RC Engineering has a good calculator on their web page:
http://www.rceng.com/technical.htm
Factor in 58PSI and a DC of 0.8
450RWHP is apx. 500-525FWHP

WS6FirebirdTA00

iTrader: (33)

question for you, can i get just the pump alone? i have the wiring already for carrying more voltage.and i am thinking about going to you guys for the pump, just for the ease of assembly.

WS6FirebirdTA00

iTrader: (33)

so i went there and about 33.5 lb/hr, the factory is rated at 28.8 right? or is it off from 3 and 4 bar. or am i short about 5 lb/hr?

Racetronix

iTrader: (2)

Contact the dealer from whom you purchased your harness and they should be able to help you with the pump assembly. Under normal circumstances the pump assembly is not sold separately.

Consideration should be made based on retaining the bucket function more than anything else.

Racetronix

iTrader: (2)

You will need 42's to provide a safety margin.

WS6FirebirdTA00

iTrader: (33)

well crap. will i be ok though for now until i can afford them? what kinda problems would it cuase running that injector with it being too small?

Racetronix

iTrader: (2)

It may run lean & inconsistent.

WS6FirebirdTA00

iTrader: (33)

i emailed you all about how to get the right tune for the 42# injectors. maybe i should post this in the tuning section, but how hard is it to compensate for the injectors in tuning? os there any standard scaling for certain tables when tuning or no?

Bluehawk27

How about these?
http://www.eadperformance.com/catalo...roducts_id=152

GrannySShifting

iTrader: (10)

Bud you dont need 42 lb injectors for a 450 rwhp car. I would on a forced induction car, but your sig just has NA stuff listed. Ive run stock injectors up to 450-460 rwhp, but Id throw a set of 30s or 32 in it

Racetronix

iTrader: (2)

What was your BSFC, max RPM, injector DC etc.
Do you have room to grow?

GrannySShifting

iTrader: (10)

No room to grow, thats why I said Id go to 30s or 32s just wouldnt put a large 42 n there unless he was planning boost, and that wouldnt support any kind of blower if he put 7 psi on top of what he has now.

At 100% duty cycle indicated air/fuel was still constant and controllable done that on a few cars and worked "ok" Depends on the application but FI motors seem much more particcular to duty cycle limits, although I still wouldnt recommend going way over DC (roughly 16 ms pulsewidth at 6000 rpm is 80% DC right? 100% is 20)

Racetronix

iTrader: (2)

No data? 100% DC? What about TTI? What about AE / asynchronous fueling?

We would disagree with your recommendations as would most tuners.
There is nothing to be lost by going to a 37 or 42 other than room to grow. The price difference is marginal.
Going too small on the other hand has many negative aspects.

GrannySShifting

iTrader: (10)

BTW racetronix sent you a pm, can you hit me back at your earliest convience/ Thanks!