Let's talk tuning...on a .BIN level!

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KATwo40
Posts: 1761
Joined: Tue Feb 01, 2005 9:40 am
Car: 1993 240sx KA-T

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This post is a two way street for me. Hopefully, I'll get out of it what I'm offering into it.

Ok, I'm attaching two .bin files. Both files are for KA24DE with T3/T04E .50 trim coming in around 3500-4000rpm.

NOTE: USE AT YOUR OWN RISK!!!

The first file is what I've been running for months and have absolutely LOVED it!

Here's the tune:370cc/min injectorsZ32 MAF6875rpm limit510km/h speed limit

http://www.sharebigfile.com/fi....html

I was able to run up to around 9-10psi on these 370's with this tune, on my old 200k mile engine. And, despite having crappy compression and worn out rings, that motor sure would run with this tune. There is obviously much more room for higher boost, but the injectors won't make it up there.

Also, I got around 30mpg on the interstate, traveling at ...high speeds over long drives (like 6hrs, just under triple digits).

Now, the second tune I'm posting is the same correction tables, but the K value and the TP scales have been modified to accomodate larger injectors.

This tune is setup for:

520cc injectors (from a late model STI...still using JECS units)Z32 MAFsame rev and speed limits

http://www.sharebigfile.com/fi....html

I would like some of the experience MAF system tuners here to please evaluate the changes I've made.

I decreased the K value and TP scales in the fuel and timing tables by 28.8% (the correlation between 520cc and 370cc).

I rescaled the TP to allow a cushion for overboosting. It creates a section of the map I don't ever plan to reach on 20psi, but should the wastetgate spike for some reason, the protection will be there.

In this upper cushion area, I retarded the timing pretty significantly for safety.

Another modification was to smooth the upper area of the fueling table and lean it out a bit. This makes it a bit more congruent with the Nissan formula, but is by no means absolute. I'll ultimately do the fine tuning to get the fueling correct in the upper area and report back.

The injector lag time has been set to 75ms, but that could vary between vehicles, as voltages change.

Thanks for the help, all input is appreciated.


Modified by KATwo40 at 4:39 PM 12/2/2006


KATwo40
Posts: 1761
Joined: Tue Feb 01, 2005 9:40 am
Car: 1993 240sx KA-T

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WD is the coolest Moderator EVER!!!!

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WDRacing
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Posts: 15983
Joined: Mon Nov 25, 2002 2:00 am
Car: 95 240SX, 99 BMW 540i, 01 Chevy Express, 14 Ford Escape
Location: MFFO
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Ok bro, just edit your first post and add the Links where you want them

KATwo40
Posts: 1761
Joined: Tue Feb 01, 2005 9:40 am
Car: 1993 240sx KA-T

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LOL, you funny F'er!


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Edub1
Posts: 1931
Joined: Thu Nov 10, 2005 2:20 pm
Car: 89 240sx KA-T

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What's the deal with that link?

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redtop91
Posts: 16325
Joined: Thu Sep 07, 2006 9:05 am
Car: ↑ ↑ ↓ ↓ ← → ← → B A Start

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I'd try this if I had a KA

KATwo40
Posts: 1761
Joined: Tue Feb 01, 2005 9:40 am
Car: 1993 240sx KA-T

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Click the link. In the lower part of the screen, you'll see a code. Enter the code and hit the "Submit" button and then you can download the file.


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