What size injectors should I get?

[b00sted95gsx]

I want to get new injectors and I just wanted to know what a good size would be.Heres some of my mods...Evo III gt 16g turbo, Greddy fmic, Apexi N1 exhaust, Injen intake, tial wastegate, greddy type rs bov, wideband, boost, and oil pressure gauges.I dont have any type of tuning tools so I will have to get one when I get injectors.

1.) What size injectors should I get?
2.) What type of tuning tool should I get?

 

[zero97tsi]

What do you plan on using to tune? An SAFC can only tune so large of an injector, and if your going to get something like DSM link or ECU+ or what have you, you might as well get a larger injector (800 - 1000) so you are future proofed for your mods.

 

[1gDSM4g63]

Anywhere for 700cc - 550cc injector will be fine but you also need to get a 190lph or 255lph fuel pump and a fpr. For tuning either go with a MAS, translator, and SAFC or DSMLink.

 

[b00sted95gsx]

The car had all this stuff done to it when I got it so it might have a upgraded fuel pump already...is there any way for me to check?

 

[TurboT91]

As for the fuel pump...yeah...take it out and look at it. Also, make sure the pump is rewired. If you have a 255 or Supra pump I would suggest getting an adjustable fuel pressure regulator. As for tuning, DSM link would be a smart choice but if funds are limited you can use an AFC with or without a custom Eprom.

 

[turboboy4]

If you are on a budget just get some 650's with and safc and a keydiver eprom ecu. But for sure make sure you have a 255 fuel pump and a AFPR

 

[b00sted95gsx]

Where would i find the fuel pump?

 

[TalonTsi31]

Where would i find the fuel pump?

its under the back seat on the passanger side.
and i have a stupid question..... what is a re wire?
and what does it do for you?

 

[b00sted95gsx]

So would I have to take the back seat out?

 

[TalonTsi31]

So would I have to take the back seat out?

ya,
if you remove the back seat, on the floor you will see a square with 4 screws remove that and you will see a round circle about 10'' across with i belive 8-10 10mm bolts going around it. once you revove the bolts itpulls out and the fuel pump iis attached to that disk.
i will look on my computer if i have some pics i of when i did mine i will post them.

 

[Drubble]

A "re-wire" of the fuel pump refers to running a heavier gauge wire from the pump to the battery. There are kits available that have all the stuff needed for this procedure. The benefit is that increasing voltage to the fuel pump increases the ouput. There is mucho info already posted about this.

 

[TalonTsi31]

here is one

 

[TalonTsi31]

A "re-wire" of the fuel pump refers to running a heavier gauge wire from the pump to the battery. There are kits available that have all the stuff needed for this procedure. The benefit is that increasing voltage to the fuel pump increases the ouput. There is mucho info already posted about this.

i will go ahead and do a search and see what i can find.
thanks for the help

 

[b00sted95gsx]

Alright so I took my back seat out and i can tell someone has messed with it...What should I look for to tell if its the stock or aftermarket pump?

 

[TalonTsi31]

both look identical, but my walbro had the w on it with the word walbro through it.
thats how you would have to tell if its stockor the 255.
so look for the walbro logo

 

[b00sted95gsx]

Alright...anything specific I have to do to take this thing out?

 

[TalonTsi31]

not really only problemi had that was a b**ch was the fuel lines when turning the nuts on the lines to pull the pump out the lines would twist and i was afraid of hurting them.
but if you just pulling out the assembly you should be fine
1. take out the 4 screws on top
2. get 3/8 ratchet an extension and i belive they are either 10or 8 mm nuts
3.remove the nuts and the assembly should pull right out
look above the float the logo should be in the middle of the pump.
like this one

 

[b00sted95gsx]

Alright thanks everyone turns out it is a walbro pump.

 

[JayRolla]

At least 650's, im running out of injector with a 16g and 550's.

 

[b00sted95gsx]

Yea I think I'm gonna go with 650's and safc...

 

[buddahboost]

Since you have a 95, I hope you have an EPROM ECU. Cause if you do, you can get it chipped.

Check this out, chips for the 2g

KEYDIVER Chips - 2G DSM ECU Tuning

Or steve here

DSM (Talon Eclipse Laser) and 3S (3000GT and Stealth) ECU Service and Repair

 

[95-TSI-AWD]

550cc or 660cc would be fine, im not to sure if you can tune 660cc's with a SAFC. I know you can get 550cc's pretty cheap from rx7's (older model) But like zero97tsi said if your goin DSM link or think you can wire Mega Squirt might as well go higher. all up to you. Whats your horse power goal? that will say what you need.

 

[gixxerdrew]

I would stick to the denso injectors unless you must have something bigger. I found more power on pump gas with denso 720s than I did when i had to go bigger. I think the spray pattern is better and gets less knock. So I would say denso 720s give you a little growing room as well.

 

[b00sted95gsx]

Well I'm really trying to make 350awhp....I'm only 16 and this is my first car so anything more than that is kinda overkill for me.

 

[b00sted95gsx]

How are precision 680's are they any good?