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Thread: what brand and size injectors for t28/s4 combo??

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Posts: 1-10 of 33
2010-12-02 23:07:37
#1
what brand and size injectors for t28/s4 combo??
I am just about to start my turbo build but need injectors. What size and and brand is most recommended when pushing 300whp?

Also best place to buy
2010-12-03 00:08:27
#2
top feed or side feed. are you going to run 3 bar or 4 bar?
2010-12-03 00:20:27
#3
Of course I would rather run sidefeed(easier), so i dont have to get a new rail, but msd's with a honda resistor box are cheap and as for size I would just probably run 72lbers for a future upgraded turbo if I decide to.
2010-12-03 00:59:04
#4
What do you mean run a honda resistor box? I have heard of running in line resistors, but do the honda box's work?
2010-12-03 01:03:28
#5
GT28RS will make 350-370 WHP at 15 PSI with S4 cams. Your total injs flow at 4 bar is only good for 340 WHP. So you will have to keep the boost down to 12 PSI. I would recommend getting 555cc injs that are good for 360 WHP 3bar and 420 WHP 4 bar.
Andreas Miko


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2010-12-03 01:20:49
#6
Originally Posted by Hybrid_DET
...


I am just going with msd 72's
2010-12-03 01:23:00
#7
Originally Posted by Big
What do you mean run a honda resistor box? I have heard of running in line resistors, but do the honda box's work?


Honda's come with a little resistor box that you can use instead of the inline resistors.

I used it on my gtir top feed 444 injectors
2010-12-03 02:24:26
#8
370s ull be fine, specially with the out the box jwt or calum tune. there tunes are so mild and safe, so youll be good.
2010-12-03 02:41:15
#9
use 480cc S15 injectors that can be had for $250-$275

370cc @ 4 bar is pushing it at 290 WHP
2010-12-03 02:45:38
#10
300 whp on 370ccs is about 90% inj duty cycle.

What dre posted is a very good cheap option if you rather not be on the edge.

Stratton.
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