My current setup is as follows:

-Blacktop S13 SR20DET
-T28 Turbo
-Blitz ECU -Not sure which yet-
-ARC Intake and Intercooler
-Stock Injectors
-Walbro 255 Fuel Pump
-Full exhaust


From what I hear the T28's are usually good for about 300WHP max. I'd like to hit that number.

Are 550cc injectors in store? I've heard mixed things from the stock injectors ...some say they're fine, some say they're weak.

 

Depending on the T28 turbo that you are using, a lot can reach more than 300hp.

I would say if you're using the T28 off of an S14 or an S15, than I would assume that the stock 370cc injectors are fine.
If you're using a T28 such as the Garrett GT2871R, then I would say you can easily get over 300hp, and would need to upgrade your MAF, and injectors.

 

480cc injectors are fine.

check this chart out for various HP levels that can be obtained using XXXcc injectors

 

The T28 is an S14 T28. Nothing fancy.

...so the stock SR injectors should be alright for maxing this turbo out around 300WHP?

MAF might be needed as well? I'd really like to look further into this Blitz ECU it has...I'm not sure what it's good for.

 

no it wont you will lean out and blow your motor get s15 injectors they are 480cc should be good enought for 300hp.

im using 740cc injectors but im just being safe for what i want 300-350whp

 

yes OP..... those numbers are at 100% duty cycle, you never ever want to run at 100% duty cycle.

 

Ok, that's what I was thinking...because...ya I'm sure the stockers are fine when running low boost...but if I plan to hit 300WHP on this T28 I'm going to need to be up near 18-20PSI.

The stock S15's are more than enough? otherwise I'm thinking a set of 550cc will do the trick as well...

...anybody recommend any brand preference? Good cost to value ratio....?

 

well before after market brands such as Nismo, Deatchworks, i would source out other stock injectors.

more info..

this all comes from the KA-T section but applies to you also.


Side Feed
Engine Style Size Impedance* Years / Models
Nissan KA24DE Side feed 270cc High S13/S14
Nissan SR20DET Side feed 370cc High S13/S14
Nissan SR20DET Side feed 480cc High S15
Nissan RB25DET Side feed 370cc High R33/R34
Nissan VG30DETT Side feed 370cc High Z32

Infiniti VH45DE Side feed 370cc High All Years
NOTE: 90 - 94 Z32 uses a style of injector that is non-compatable with KA fuel rails (still sidefeed), while 95 - 96 uses the same injector as the RB25DET and SR20DET, etc.

Mazda FD Side feed 550cc High 93-98
Mazda FD Side feed 850cc High 93-98
Mazda 20B Side feed 550cc High JDM Mazda Cosmo?
Subaru JDM STi Side feed 550cc (565cc?) High pre 99
Subaru STi Side feed 565cc High 03+

Toyota 7M-GTE Side feed 430cc (440cc?) Low Supra mk3 turbo
Toyota 2JZ-GTE Side feed 550cc Low Supra mk4 turbo
Toyota 3S-GTE Side feed 430cc (440cc?) Low MR2, 91+
Toyota 4A-GZE Side feed? 365cc Low MR2, MK1
Toyota Celica GTS Side feed? 310cc High 2000+
Toyota JDM 1JZ-GTE Side feed 430cc Low Chaser, Supra mk3?
Toyota JDM 2JZ-GTE Side feed 430cc High?* Supra mk4 turbo
Toyota JDM 7M-GTE Side feed 430cc Low Supra mk3 turbo

 

Also, you're saying you want to run 18+lbs of boost. NOT GOOD


The factory S14 turbo max's out at 14/15psi.

 

Really? I thought it was the T25 that maxed out at 14PSI...

...maybe I'm wrong but I thought I was reading somewhere that you could get up near 20PSI on the T28.

 

No sir. T28 (the one your using, not all) max's out at 14psi. T28's such as the GT2871R max out around 20psi I think, but I have heard of people pushing 25psi on them.

 

dunno about the gt287r but the stock s14 turbo can boost 18psi BUT it is beyond its max efficiency so like alex said it is not good 15 psi max

 

14-15PSI hmmm....300WHP might be unattainable for a T28 then...unless this Blitz ECU is something extraordinary.

Thanks for the correction. It's no disco potato. Just a stock T28 of an S14.

I guess I should be shooting for 260-270WHP.