Injector mods

tmarcel · Post by **tmarcel** » Thu Sep 25, 2008 1:13 am

Tommio RS wrote:Ok then. I need a seperate fuel management system. So then really this mod is all most useless... And seeing that i could get some sti injectors and run the same fuel management system and probably mod those injectors whats the point really!!

Thanks for all your help people!!

I wouldn't say it's "useless". It is what it is as the expression goes. It's nearly free (other than your time) and you will simply need to tune for it. No biggie.

dropdfocus · Post by **dropdfocus** » Thu Sep 25, 2008 1:35 am

Right, but the point I believe he was getting to was that the STi Yellow injectors are already 550cc w/o being modded & then you can go larger if you wish.

But yes, the JDM grey 440cc injectors are the largest you can use w/o much problems on the stock computer.

(I own both grey & yellow)

PhyrraM · Post by **PhyrraM** » Thu Sep 25, 2008 2:04 am

tmarcel wrote:Anybody have a pic of modded red injectors? ........

Stock on left. Modded on right.

"Soft" aluminum collar removed.

Modded on left. "Ready to mod" on the right.

Gallery here: http://www.flickr.com/photos/23291496@N ... 476247528/

tmarcel · Post by **tmarcel** » Thu Sep 25, 2008 2:36 am

Oh sh*t man that those pics are nice. Exactly what I was looking for

Those are completely different than the top feed caps.

Post by **Legacy777** » Fri Sep 26, 2008 2:01 am

How did you go from the ready to mod pic with the four holes on the right, to the modded pic with the different tip on the left?

PhyrraM · Post by **PhyrraM** » Fri Sep 26, 2008 3:12 am

A belt sander. Gently ground down the tip of the injector at about a 45 degree angle, while rotating it evenly, until the 'cover' popped off. You can see the cover piece on the counter top in the pics. You can also see the sanding lines on the injector tip if you look close.

tmarcel · Post by **tmarcel** » Fri Sep 26, 2008 6:45 pm

So how many with modded red injectors have flow tested them? I find it hard to believe that they only flow around 550cc. All of the other hacked stock injectors so far have flowed around 700-900cc + depending on what fluid they were tested with.

Post by **Legacy777** » Fri Sep 26, 2008 10:17 pm

PhyrraM wrote:A belt sander. Gently ground down the tip of the injector at about a 45 degree angle, while rotating it evenly, until the 'cover' popped off. You can see the cover piece on the counter top in the pics. You can also see the sanding lines on the injector tip if you look close.

Ok,

I got you. How is the spray pattern of the modded injectors? I guess having them flow tested would show that.

PhyrraM · Post by **PhyrraM** » Fri Sep 26, 2008 10:26 pm

Just did them. Mostly because I was curious, might need them eventually, and because somebody asked for pics (and I'm currently on a picture binge

).

I'll eventually flowtest them, but that costs real money. If I get enough donations I'll do it....for the community.

dropdfocus · Post by **dropdfocus** » Fri Sep 26, 2008 10:30 pm

What's your cost? I believe RCE charges $35 per injector. I'd likely toss in since I have 2 sets (one set on the wife's LGT) and it might be worth my while to have full test proof on this mod.

Post by **Legacy777** » Fri Sep 26, 2008 10:37 pm

It costs about $100 to get all four done.

I don't know if they'd do just one injector to see what the flow rate & injector pattern is worth. But I think we could get that money very easily. I don't mind paying for the one to be tested by myself.

dropdfocus · Post by **dropdfocus** » Fri Sep 26, 2008 10:39 pm

I'd chip in $15 ($20 max) on the deal to help towards the goal.

PhyrraM · Post by **PhyrraM** » Fri Sep 26, 2008 11:57 pm

If you guys are serious, I'll donate my injectors and 1/2 the cost (they are my injectors, afterall).

Of course, all results would be public.

dropdfocus · Post by **dropdfocus** » Sat Sep 27, 2008 2:29 am

Yeah, I'm serious. I'm in on the deal to see the proof of the end result.

douglas vincent · Post by **douglas vincent** » Sat Sep 27, 2008 3:53 am

ATTENTION!!!!!!!

You MUST get a platic cap (look at any other injector) BACK ON THE INJECTOR!!!!!!

The aluminum thingy HOLDS THE O-RING IN PLACE!!!!!!!

Without the platic tip, the o-ring will pop off/leak fuel.

Been there, done that!

YOU MUST REINSTALL THE PLASTIC TIPS!!!!!!

Tommio RS · Post by **Tommio RS** » Sun Sep 28, 2008 1:17 am

Dam this tread just gets better and better! I LOVE injector mods!

TwinTurbine · Post by **TwinTurbine** » Tue Sep 30, 2008 2:11 am

Actually you can mod the pink Turbo Injectors it's done all the time. But don't let anyone know at the track, wink, wink, they really do want to see under your hood after you burn the tires off in first gear. Idle is solid and steady.

dropdfocus · Post by **dropdfocus** » Tue Sep 30, 2008 2:24 pm

True, that is an option as well. 370cc stock correct?

Post by **Legacy777** » Wed Oct 01, 2008 7:33 pm

I'm game as well to donate like I mentioned.

Tommio RS · Post by **Tommio RS** » Thu Oct 02, 2008 11:34 pm

WOW WOW BUDDY! So your telling me TwinTurbine i can mod my stock 93 leggy turbo injectors??? and maybe run stock ecu and fuel stuff??? if So tell me!!!! then ill upgrade the turbo to a vf39!

PhyrraM · Post by **PhyrraM** » Thu Oct 02, 2008 11:39 pm

I don't see how the stock injectors can be modded like some of the others. The stock 'pinks' have the pintle already exposed.

I'll get the reds flow tested and post the results. I'll also post my paypal at that time for those that would use it.

tmarcel · Post by **tmarcel** » Fri Oct 03, 2008 2:31 am

Tommio RS,

I wouldn't get too excited. You can try anything you want but running injectors that flow twice as much as what's expected by the ECU is not going to happen.

PhyrraM,

That's awesome man! I would donate BUT I will mod and have a set cleaned and flowed regardless. Please be sure to post your results. I'm thinking 600cc

Tommio RS · Post by **Tommio RS** » Fri Oct 03, 2008 3:21 am

Well hopes go up and hopes go down. What can i say. Well then, ill just need to find some ej35d injectors and mod them. Or get STi injectors and mod them, with a fuel management system.

93forestpearl · Post by **93forestpearl** » Fri Oct 03, 2008 3:42 am

We have an injector flow tester here at school, I just need to get one of my buddies in the automotive engineering program to flow test a set for me. I have a set of EJ25D injectors sitting at home collecting dust, so I could do this to them if I wanted to. I need to figure out a way to keep an o-ring on the bottom of it though.

Ideas?

93forestpearl · Post by **93forestpearl** » Fri Oct 03, 2008 3:44 am

Also, how did you get the aluminum shroud off without going midevil on it? I haven't tried yet, but a little heads up would be nice?

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