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Old 02-17-2004, 03:39 PM   #1
silverscooby
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Default UTEC tuning help

Currently I have a dyno-tuned map by the guys at TurboXs for my setup using the stock airbox and Sti 550cc injectors. I am planning on doing the "injector mod" to bump the Sti's up to 740cc as well as adding a short ram intake.

I'm a newb when it comes to the UTEC even though I've had it a year or so. I just havent had the time to mess with it nor had the need since I was dyno tuned. Problem is, with the addition of the 740cc and the intake I will need another tune.

I will have access to a wide-band and EGT gauge and some flat clear roads to tune on but I need some insight as to the tuning portion.

Can anyone tell me some pointers as far as where to start once I install the injectors and intake? I'm assuming the intake will help lean the extra fuel out somewhat but I am worried about having too much fuel on idle and the midrange.

Sorry for the newb question but I'd rather hurt my pride alittle than have a crappy running car.

Thanks guys!
Jim
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Old 02-17-2004, 04:13 PM   #2
MustGoFast
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You will have WAAAAY to much fuel at idle.. I would start first with the 0 load to get your idle down and so your fuel trims will be mostly constant then... then from there begin work.. your whole map is gong to need a ton of work.. if you can find someone who's done it already for those injectors and will give you a copy of their fuel map that would be a good starting point and will save you a ton of time.
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Old 02-17-2004, 04:22 PM   #3
silverscooby
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Thanks for the imput. The only problem is that I have a 2.2 block that might throw the maps off.

Quote:
your whole map is gong to need a ton of work
when you say "whole map" do you mean just the whole fuel map? Or the ignition and boost maps as well?
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Old 02-17-2004, 04:53 PM   #4
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Your profile says you have an 18g...but how the hell are you not maxing out the STi injectors is whats picking my brain . Why did you get it tuned with such small injectors?

You will need a complete fuel map retune, dont skimp out and get it done right with a WBO2. Since you were probably maxing them out, the boost map might have more potential which means the timing map needs some adjustment. Looks like you are facing a complete retune.
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Old 02-17-2004, 05:23 PM   #5
03WRXMA
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Since you paid to have it done once and didnt learn about the tuning portion in the interm, your best bet may be to go get it tuned again

That way youll be safe, and have an excellent consistant map.
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Old 02-17-2004, 06:22 PM   #6
silverscooby
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Quote:
Originally posted by cdvma
Your profile says you have an 18g...but how the hell are you not maxing out the STi injectors is whats picking my brain . Why did you get it tuned with such small injectors?
I am maxing out the injectors, that's the problem. Never was a problem until the colder weather hit. I could always scale the boost back and keep using these injectors but I feel like I'm leaving some power on the table. I'm not the only person running an 18g on 550's, FWIW

Why did I get it tuned with such small injectors? At the time PE600's cost over $600 and I already had Sti injectors in there from my old setup... There was no injector mod at that time. I've been running this setup for 6 months.
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Old 02-17-2004, 06:28 PM   #7
silverscooby
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Quote:
Originally posted by 03WRXMA
Since you paid to have it done once and didnt learn about the tuning portion in the interm, your best bet may be to go get it tuned again

That way youll be safe, and have an excellent consistant map.
That was my first choice but TurboXS does not have any spots open until April. Knowledge Performance would be the next "closest" (still 5 hours away) but when I called no-one answered.
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Old 02-17-2004, 06:44 PM   #8
03WRXMA
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Quote:
Originally posted by silverscooby
That was my first choice but TurboXS does not have any spots open until April. Knowledge Performance would be the next "closest" (still 5 hours away) but when I called no-one answered.
Dammmn TXS is busy!

Did you ask anyone in the injector mod thread if they have a map for it? That may be a good direction to go in
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Old 02-20-2004, 03:19 PM   #9
SBW
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Quote:
Originally posted by cdvma
Your profile says you have an 18g...but how the hell are you not maxing out the STi injectors is whats picking my brain . Why did you get it tuned with such small injectors?

You will need a complete fuel map retune, dont skimp out and get it done right with a WBO2. Since you were probably maxing them out, the boost map might have more potential which means the timing map needs some adjustment. Looks like you are facing a complete retune.
It has been said in previous fp18g threads, that the STI injectors are enough for the fp18g.

I think MustGoFast pretty much summed it up too.
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Old 02-21-2004, 11:31 AM   #10
MustGoFast
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thanks
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Old 02-22-2004, 03:53 AM   #11
Big Turkey
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Quote:
Originally posted by SBW
It has been said in previous fp18g threads, that the STI injectors are enough for the fp18g.

I think MustGoFast pretty much summed it up too.
But he has a 2.2L.

silverscooby, if I were you I wouldn't mess with those injectors unless you absolutely NEED them. I just got tuned on them.. I needed to get an ECUtek reflash to get them to idle perfect, and have the cold start to idle perfect 14.7:1. Before the reflash it would idle around 9.9-10.5:1.. SUPER rich. Now it's just like before. But it's an absolutely pain getting those things out.

Crush the FPR. That will give you plenty of fuel until you get a bigger turbo
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