Fuel Injector Upgrade

LegacyT · Post by **LegacyT** » Mon Dec 30, 2002 12:35 pm

Anyone know how much HP the stock injectors can handle before they exceed 80% of their duty cycle? I'm aiming at ~300 crank hp, with a TD05. If I need new ones Any suggestions, are SVX ones good for this type of power?

Thanks,
Mark

boostjunkie · Post by **boostjunkie** » Mon Dec 30, 2002 4:19 pm

Hehe, sounds like you're going the route that Adam took with his (I mean my, hehe) turbo legacy . . . it's even the same color!!

Anyways, Adam set up the car with all the parts in my sig, and told me that 1bar was probably the max boost I could run before upgrading the injectors. I believe he had a source for aftermarket injectors, too. You might want to get in touch with him about this.

Not sure how much horsepower this thing's putting out but I was told ~250-260hp.

Jason

LegacyT · Post by **LegacyT** » Mon Dec 30, 2002 4:59 pm

Does your TD05 have the large 16g or small 16g compressor?
15 pounds on either one is is still way more cfm than a stock IHI RHB5, so thats pretty good, actually really good. And your having no lean run problems, you say?

Mark,

boostjunkie · Post by **boostjunkie** » Mon Dec 30, 2002 5:19 pm

I'm not sure which compressor the turbo's running, but it's off of an STi model. I believe those may have used the smaller compressor wheel, but don't quote me on that.

As for lean-run conditions, I'll be able to let you know more after I get it dynoed and hooked up to a wideband O2 sensor sometime next month.

I haven't been able to detect any knocking whatsoever from the engine, FWIW.

Jason

teesaa · Post by **teesaa** » Thu Jan 02, 2003 4:45 pm

I have been running 1,1 bar boost for over 4 years now and no problems with the injectors.

You're on the right path with the air-fuel meter. If the mixture keeps rich enought on high pressures & workloads, the you have no problems. Remember to get the injectors cleaned every now & then. They do it with ultrasound these days. Costs you about $ 100 for all injectors.

boostjunkie · Post by **boostjunkie** » Thu Jan 02, 2003 4:57 pm

teesaa, I am under the assuption that you have a 2.0L turbo engine whereas the US got the 2.2L . . . do you know if the engines have the same size injectors?

Post by **Legacy777** » Thu Jan 02, 2003 5:47 pm

I am pretty sure the 2.2t motors got smaller injectors. Someone else can confirm the numbers, but I think the 2.2t motor got like 270cc injectors......I think.....am probably wrong though....

LegacyT · Post by **LegacyT** » Thu Jan 02, 2003 6:41 pm

The 2.2T got the 370cc pink injectors. The N/A's got the 260cc ones.

Mark,

Post by **Legacy777** » Thu Jan 02, 2003 8:23 pm

ok.....I knew it was something like that......just forgot the numbers......d'oh

IggDawg · Post by **IggDawg** » Thu Jan 02, 2003 9:37 pm

Will the 420cc WRX injectors fit?

Aaron's ej22t · Post by **Aaron's ej22t** » Thu Jan 02, 2003 11:08 pm

Igg, adam @ z1auto told me that wrx 420cc injectors won't fit cause they are top feed, and our injectors are side feed. the older 93-96 wrx injectors will fit and they are 440cc.
our stock injectors are somewhere between 360-380cc.

Legacyt, your goal is the same as mine. i recommend walbro fuel pump and some bigger injectors (not sure which ones yet).

parallel fuel mod and a better fpr would probably help too.

czo79 · Post by **czo79** » Tue Jan 21, 2003 5:00 am

I have a 94 jdm wrx ej20 in my legacy turbo and it has top feed 440cc injectors. Does anyone know where I might be able to purchase a new set of 94 wrx 440cc injectors?
Thanks

boostjunkie · Post by **boostjunkie** » Tue Jan 21, 2003 3:28 pm

Contact Adam at Z1 Performance . . . just search for the company name on this board.

mTk · Post by **mTk** » Fri Sep 12, 2003 2:39 am

Aaron's ej22t wrote:Igg, adam @ z1auto told me that wrx 420cc injectors won't fit cause they are top feed, and our injectors are side feed.

I have some top feed RS fuel rails that i could use (NO idea if they would fit) and are already set up for parallel... I guess i'll just get injectors and try it out

MK

-K- · Post by **-K-** » Tue Sep 16, 2003 12:53 am

After thinking about boostjunkie's setup and people on the rsliberty site, I don't think many of us are in need of bigger injectors.

imprezausa · Post by **imprezausa** » Mon Oct 06, 2003 5:37 pm

I’m looking for any sources for bigger injectors for EJ22T.
Any one knows one?

Brat4by4 · Post by **Brat4by4** » Mon Oct 06, 2003 8:25 pm

search e-bay for places that are selling JDM used parts from Japan. they usually have access to junkyards or their japanese equivalent. You can get 93-96 Sti injectors or the appropriate Blitzen injectors, both 440 i do believe. Side feed is the key.

mTk · Post by **mTk** » Mon Oct 06, 2003 8:38 pm

http://www.rallispec.com/product-eng_3.htm

"RST-0622 STi 440cc Side-feed Injector (MY97/98 DOHC) $408/set"

Possibly work?

MK

imprezausa · Post by **imprezausa** » Fri Oct 10, 2003 12:18 am

mk750 wrote:http://www.rallispec.com/product-eng_3.htm

"RST-0622 STi 440cc Side-feed Injector (MY97/98 DOHC) $408/set"

Possibly work?

MK

BINGO

Thanks,
J

mTk · Post by **mTk** » Fri Oct 10, 2003 1:05 am

No prob

MK

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