amadeuscr

hello people , I wanted to ask how many whp I can take out from my engine and be safe at the same time .

I have this:

b16a JDM
stock sleeves
eagle rods
wiseco pistons forged
Turbo Kit - t3/t4
2.5 inch exhaust pipping
TiAL 38mm wastegate.
450cc DSM injectors
Walbro fuel pump
Tunning with CROME PRO.

I am currently with 282whp and 193lbsft of torque at 10psi , I know that at this point I need to change injectors but I dyno it last week, Im installing this week the walbro too. my goal is probably 350whp , a little less don't hurt ! , thanks in advance for the help.

LS_VTEC

It wouldn't hurt to put another 6psi ontop of the 10psi your running now, should get you to your goal if not a little more. Just upgrade the fuel system to compensate for the increase in boost, and have it dyno tuned again.

amadeuscr

I forgot to mention that I am using stock head gasket and stock head

t3t4delsol

I would start to worry about using the stock head at that kind of hosrepower, I would atleast get a mild port and a 3 angle valve job. Did you install some arp head bolts?

amadeuscr

I have stock head bolts , I was thinking about installing cometic head gasket , arp bolts , and 750cc injectors !! and start from there , what do you think ?

t3t4delsol

atleast get arp, or I guarantee your will get head lift after a while, the stock head gasket is fine. but if you do decide to replace it I would get atleast a mild port and a 3 angle valve job

efhondakid

350-400 is about all the stock sleeves are good for isnt it?

amadeuscr

I know stock fuel pump wont work , I realize it when I was tuning, I installed a bigger one , but don't know the brand, and that one worked good for a while, but I already bought the walbro , cause I want to be sure of what I have , I am installing it this week,

So buy list is ARP , cometic head gasket , and injectors ?

rlhernandez86

I dont know if i heard right but i thought they said that b16 blocks are kind of crappy? Not trying to whore your thread bud

LS_VTEC

B16 blocks are crappy for all motor setups. The most NA power ive seen out of a b16a was 200whp, and that was with some SERIOUS head work and cams not to mention the higher compression pistons.

Boost on the other hand is a different story. You can boost a stock b16a engine with a t3t4 50 trim and make 250whp tuned on 10psi. Thats some serious fun on the street, but I prefer something along the lines of 350-400whp for the street, IMO.

amadeuscr

I did 282whp and 193lbsft of torque with 10psi !

amadeuscr

I have a question about all this , I have seen people with 12psi and with hp not even close to what I got, using similar setups (forged pistons and rods ) , I have a friend that dyno tuned he got 266whp at 12psi , I believe that if I put 12psi I get at least 300whp, cause I made 282whp at 10psi , and I am talking about the same engine (b16a)

amadeuscr

People , I need it to add something , I know is not directly related to the subject , but I was changing the fuel pump and I took some time to check my injectors, the guy who sell those to me told me that were high impedance ! , and I believed him (big mistake) , yesterday I was checking Ohms on the injectors and apparently they are low impedance (3.5ohms) , high impedance should be around 12ohms (correct me if Im wrong) , so there is two things I wanted to check ...

1st : I bought a Si 91 civic resistor box , it has 5 wires, one red , and 4 black, the 4 black should be connect it to the injectors (yellow/black) , and red should be connected to only one line that comes from the ECU ? , having in mind that there are 8 wires total, 4 wires that comes from the injectors(yellow/black) and 4 wires that comes from ECU ( I Think , lightyellow/black ) , 1 from this last 4 is real signal (ECU) and what are the other 3??
I install the box this way : all 4 wires (comes from ecu lightyellow/black) all togheter to the red wire on the resistor box, and the 4 black wires directly to the injectors (yellow/black).

2nd: I used those low impedance injectors without resistor box for more than a month , I know that can be fatal for the ECU . but is working now no problem aparently , is the ECU ok ? or even if it's working , could be damaged by now ?

__________________
Ride:

B16A JDM SiR-II - Hatch 92
- WISECO Piston Kit STD
- Eagle Rods
- Walbro 255lph
- AEM Wideband
- CROME PRO
- T3/T4 Turbo Kit - RamHorn Style
- DSM 450cc Injectors
- TiAL 38 MM External WasteGate
- Integra Front Brake System
- Mugen Valve Cover Red
- NGK Iridium Spark Plugs

BrutalB83

Nice! Did you make that yourself?

LS_VTEC

Some setups can operate your way without a problem. To be perfectly honest with you, if it were to burn out the ecu, it would have done so within roughly 10 minutes.

*If you look at the specifications of the injector driver package, it indicates it can flow the amount of current required for low impedance injectors.*

schleht

Are you running an aftermarket Fuel Pressure Regulator? If so, what brand and type of FPR is it and what does the fuel pressure rise per pound of boost?

amadeuscr

I know psi is not a good base to say how much power you are going to get , but the difference is too big !

amadeuscr

ok , to close the subject on the injectors , I found a page googleing with this picture and the info

here is the link : G2IC Turbo Guide - A Guide to Turbocharging your Honda / Acura Integra

here is the picture :

amadeuscr

the only thing I don't understand from yours is that only one line comes from the ecu to the red wire on the resistorbox , in my case I have 4 (obd1)

amadeuscr

mine is from a 91 si too, 4 black wires and 1 red , but the thing is that the normal configuration on my obd1 is like this : 4 yellow/black wires that comes from the injectors hooked to 4 wires (lightyellow/black) that goes to the ECU , look this link , this is pretty much what I have and what I did !

Anyone have a wiring diagram for a resistor box into an obd1 honda w/DSM 450's? - Tampa Racing

JustinSane

these guys have yah covered, you are correct in that you are maxing out the 450s around 300 whp, if your goals are only 350 some 550s would suffice, but it wouldnt hurt in the least to use a set of 750s, that way you have room to grow. as long as you have ARP studs i would not worry about bumping that up to 16 psi, heck it could handle 19 psi. but i think a good tune and 16 psi or so will meet your goals. 350 whp is also my goal so we share something i am currently at 300, next weds i get retuned with a bigger turbo and 750s and am hoping to hit that goal. i hope you reach it as well.

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1993 civic dx, b18c1 510 on pump 10.7 at 137.9 with a baby seat in the back

amadeuscr

I just got a RC 550 , I trade it with the SAFC NEO , lol , in theory that will handle my goal for now , I bought the ARP , the LMA's and the walbro fuel pump, I would like to know what would be a good idea for head gasket ? cometic but what size ? , , hey justin , nice numbers on that z6