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Old 02-25-2004, 01:31 PM   #1
TheMadScientist
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Default APS 70mm CAI + Utec

Is any one running the 70mm APS CAI, utec and Sti injectors?
If you are running this setup could you email or post your 0% fuel map?

When tuning this setup I had to use ~+3.5 in the 0% fuel map to get the LT and ST fuel trims to with in +/- 7%. I am just wondering if this is what other people are seeing.

Thanks
TMS
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Old 02-25-2004, 03:41 PM   #2
pegdrgr
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I am, I am




Unfortunately my laptop died and will not be back online until tomorrow. I will try to remember to come back and post it here. The only problem is I crushed my FPR so my numbers will be a little lean on your setup unless you pick up the STi FPR or crush your's also.
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Old 02-25-2004, 05:34 PM   #3
TheMadScientist
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Quote:
Originally posted by pegdrgr
I am, I am




Unfortunately my laptop died and will not be back online until tomorrow. I will try to remember to come back and post it here. The only problem is I crushed my FPR so my numbers will be a little lean on your setup unless you pick up the STi FPR or crush your's also.
I just needed a sanity check. All of the Utec+bigger injector set-ups that I have tuned have had minus corections in the 0% column, but they all had stock air boxxes or the TXS shorty. This is the first WRX that I have tuned with the APS 70mm CAI.
When I started the ST fuel trim was pegged at +25% the LT was ~+14% and the car was throwing lean codes. Now the ST is ~+/-6% and the LT is -2%.

Thanks
TMS
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Old 02-25-2004, 05:43 PM   #4
mick_the_ginge
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Not that I have tuned with one but the 70mm is larger than the stock MAF tube. Their 65 mm is smalled.

That 70mm flows more air so it makes sense that your 0% will be adding more fuel than usual.
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Old 02-25-2004, 07:26 PM   #5
pegdrgr
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My numbers ranged from -1 to +1 roughly for the 0 column. I have played with them so much I honestly do not recall exactly what they are. Actually I take that back, when starting from a map tuned for STi injectors a rough starting point is to add 5 to all points and go from there.

At some point in time I have had positive numbers in the range of 3-4.


I should be back online tomorrow and I will share my exact map.
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Old 02-25-2004, 09:58 PM   #6
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So what do you need to do to your timing maps? I'm about to install a 70mm intake too.
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Old 02-26-2004, 06:39 AM   #7
TheMadScientist
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Quote:
Originally posted by Bolster
So what do you need to do to your timing maps? I'm about to install a 70mm intake too.
Depends on fuel, boost pressure and the turbo you are using.

TMS
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Old 02-26-2004, 08:36 AM   #8
Bolster
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Quote:
Originally posted by TheMadScientist
Depends on fuel, boost pressure and the turbo you are using.

TMS
Yeah- I'm running an upgraded pump, STi injectors (565 cc), and will be putting in a VF22 next week. I just wanted to make a "safe" map so I could get to the place where I have the car dyno tuned without blowing it up. I was planning on pulling about 3 degrees of timing and bumping the fuel up, while cutting boost too (basically the valet map now that I think about it ). I was then going to drive it very carefully up to FIS and get it tuned since they have a WB02 and a dyno. My target is 19psi + WI.

Anyway, I was looking for a general referrence, not a whole map so I could safely drive the car about 15 miles.
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Old 03-01-2004, 05:55 PM   #9
Subahaulic
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I also could use a working map for the nearly identical mods, except I will have ~200 miles to TXS for the dyno tune.
Thanks,
Mark
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Old 03-01-2004, 06:34 PM   #10
TheMadScientist
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I got the car running really good last weekend. The 0% ranges from +2.7 to +3.7. ST is +/-6% and LT is a consistant -3% to -5.5% after the car has warmed up. Fuel mileage has almost doubled from before I started. With the APS 70mm, sti injectors and the SR40 20psi at 6600rpm the injectors are at 96% with an A/F acording to OBD scanner is just touching 11.39:1.
The car pulls like stink and the best part no more lean codes from the ECU.

TMS
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