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Old 05-01-2004, 12:00 PM   #1
raucky
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Default Utec and 800cc injectors

I was wondering if the utec can handle PE 800cc injectors? A vender on i-club said that they are a little too big for the stock ecu/utec. I'm pretty sure I need this much fuel because i'm going to be running an 18g if not please let me know. Any help would be great.
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Old 05-01-2004, 12:39 PM   #2
tmarcel
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Just modify your stock injectors and flow 850cc's. The UTEC has no problem with them. Concerning the PE's, I've heard that you can get them to work but not 100% on that.
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Old 05-01-2004, 04:05 PM   #3
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See i have a hard time doing that because there not designed to be like that....... Yes, i know people are doing it and it is working for some of them, but i want something that is designed to work like that. I'm just not a cutting corners kind of guy i guess.

Please give me more feed back........
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Old 05-01-2004, 04:56 PM   #4
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You will not "need" 800s for a 18G. A Green will out run the STi pinks, but not a 18G. The UTEC can handle 800s with no problem. You will have to play with the settings a little, but it is entirely possible to make them run smooth.
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Old 05-01-2004, 05:26 PM   #5
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The nice guy at Deadbolt Inter. said that the monster 18gs will out run the sti's 550cc for sure and he said that i should look for at least 650's.
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Old 05-01-2004, 05:40 PM   #6
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Quote:
Originally posted by raucky
See i have a hard time doing that because there not designed to be like that....... Yes, i know people are doing it and it is working for some of them, but i want something that is designed to work like that.
The PE's are a different design than stock too (not just flow), and have their own issues...
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Old 05-01-2004, 05:49 PM   #7
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Which are.....................?
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Old 05-01-2004, 05:56 PM   #8
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Rise time. Basically the injectors are not as quick to respond as the stock ones or STi pinks. There will be engine management able to deal with this shortly.

You will be pushing the limits of the pinks and 650s will give you more head room, but 800s on that turbo is just over kill. Now if you are planning on the future go for it, I just didn't want you thinking that you were going to be running the 800s very hard with that turbo.
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Old 05-01-2004, 06:46 PM   #9
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your sooooo right because at some point i want to run a 2.5 sti shortblock w/ ver7 or 8 heads..... Thats the real reason why i want something as big as the 800s

Even with the slower injector (PE) the setup would still be safe correct?

Is there another injector that i should look at and is there any other issues with the PEs?
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Old 05-01-2004, 08:41 PM   #10
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Quote:
Originally posted by raucky
Yes, i know people are doing it and it is working for some of them,
Who are they not working for? I ahven't heard of anybody not being able to get them to idle or whatever. I just took out the STI pinks in favor of the modded stockers. Within a few hours I had a nice idle and a great fuel curve. As pegdrgr stated, the PE's have there own set of issues. If I was going to fork out the money it wouldn't be for them. But it is your money so do as you like.
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Old 05-01-2004, 09:01 PM   #11
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Quote:
Originally posted by raucky
The nice guy at Deadbolt Inter. said that the monster 18gs will out run the sti's 550cc for sure and he said that i should look for at least 650's.
P&P job on your 18G isn't going to be much of a difference in flow over a standard 18G. You will spool up a little quicker but top end lbs/min flow is going to be nearly the same. Unless - he actually increases the exhaust housing A/R or clips the wheel then that would could increase the flow. But then again, you're still at the mercy of the flow map of the 18G compressor wheel (it is what it is and can't be changed). You would be fine with the Pinks FWIW.
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Old 05-01-2004, 10:24 PM   #12
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Talk to Dan at Godspeed. He mentioned something to me the other day abot some new 850s that would drop right in, I think he said PE, but I could be wrong.
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Old 05-02-2004, 01:54 AM   #13
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ok guys.......slow down, i have a vf30!!!! now not a 18g.......i want to upgrade to a 18g. Thanks for the hint about Godspeed
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Old 05-07-2004, 10:26 AM   #14
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I am running 785cc ultimate Racing injectors on my 18G. I currently have plenty of room to work with. I used to have a VF22 w/STi pinks and the IDCs where really high on the boost I was running. So needless to say after I got the 18G I had to upgrade the injectors. Now my IDCs are peaking in the 70% range. The only drawback that I am seeing at this point is that the car has to warm up before you drive it, otherwise it will act a little funny for a couple minutes. Something to do with cold start and coolant temps.
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Old 05-07-2004, 11:43 AM   #15
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Quote:
Originally posted by pegdrgr
You will not "need" 800s for a 18G. A Green will out run the STi pinks, but not a 18G. The UTEC can handle 800s with no problem. You will have to play with the settings a little, but it is entirely possible to make them run smooth.
My Greddy T518z (18g with 8cm) outflowed my Sti inj.. quite handliy too. I currently have PE 800cc in my car. It is still getting tuned. Dan at Godspeed is doing it..
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Old 05-07-2004, 12:25 PM   #16
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Quote:
Originally posted by pegdrgr
Rise time. Basically the injectors are not as quick to respond as the stock ones or STi pinks. There will be engine management able to deal with this shortly.
That's about what it comes down to; the time to activate the PE injector is about twice as long (IIRC) as stock & STi. This is an issue at idle, as there is such a short injector pulse. Under load, where the pulse is a lot longer than the activation time, it isn't really an issue. It can be tuned around on the UTEC, and an ECU reflash can fix it easy. The UTEC tune won't completely fix the issue, just tune as much out as possible.

There is a guy around here (Detroit) running PE's & UTEC that we see at virtually every tuesday meet we have. In cold weather the idle would hunt a bit, and required extra tuning.

Tom
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