how-to: ECU-based direct boost control

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Oct 3, 2008 | 08:36 AM

#436

borjaland

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From: Spain

Thank you very much MrFred !!!! My ecuflash version is 1.35, I´ve changed the values little to big and now the maps shows good values!!!!!

Boost Adder 9.3 psia

Boost Error Correction
on boost error psi cels:
-3.0888
-2.7027
-2.3166
-1.9305
-1.5444
-1.1583
-0.772201
-0.3861
0
0.3861
0.772201
1.1583
1.5444
1.9305
2.3166
2.7027
3.06467

wgdc cels:
8
8
8
8
6.5
4.5
3.5
2
0
-1.5
-3.5
-5
-6.5
-13
-13
-13
-13

Oct 3, 2008 | 08:47 AM

#437

mrfred

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From: Tri-Cities, WA // Portland, OR

Quote:

Originally Posted by borjaland

Hi to every body from spain!!

I´m trying to make the modifiation in a 96420008 rom, but the Boost Error correction and the Boost Adder maps , shows the psi values differents from the other roms on this thread.

On the next picture you can see all new boost control maps.

Can be an address problem???

I found a "96420008" ROM that gives the exact same values that you posted. I looked at the disassem, and its not really a 96420008 ROM. Someone changed the internal ID. Your ROM must also have a changed ID. I bet its a 9641XXXX ROM.

Oct 3, 2008 | 09:05 AM

#438

borjaland

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From: Spain

Quote:

Originally Posted by mrfred

could be, I´ve imported the car from USA to spain, the car had some modifications.
How do you see the new values after change the endian values from "little" to "big" ??????

Thanks MrFred!!!!!!!!

Oct 3, 2008 | 09:20 AM

#439

mrfred

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Quote:

Originally Posted by borjaland

If the "little" to "big" works for you, then please disregard my previous post. Your ROM is a 96420008.

Oct 3, 2008 | 09:35 AM

#440

borjaland

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From: Spain

Quote:

Originally Posted by mrfred

If the "little" to "big" works for you, then please disregard my previous post. Your ROM is a 96420008.

Ok Thanks

Oct 7, 2008 | 04:33 PM

#441

lan_evo_mr9

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Is there any way to go higher than 24.6 actual psi for e85 use?

Oct 7, 2008 | 04:55 PM

#442

mrfred

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Quote:

Originally Posted by lan_evo_mr9

Is there any way to go higher than 24.6 actual psi for e85 use?

Sure, just set the boost adder to say 24.5 psi. The max possible boost will then be 34.6 psi.

Oct 7, 2008 | 04:55 PM

#443

RazorLab

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Quote:

Originally Posted by lan_evo_mr9

Is there any way to go higher than 24.6 actual psi for e85 use?

Yes, just up the Boost Adder and do the math

Example:

Boost adder = 20
Baseline Boost table @ 4000 = 23

20+23= 43

Minus your atmospheric, let's say 14.7

43-14.7 = 28.3 psi

Oct 8, 2008 | 07:24 PM

#444

dan l

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However if your on the 3 bar map you really can't control anything over 29psi.

Oct 8, 2008 | 07:46 PM

#445

lan_evo_mr9

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From: MD

Where do I patch the new rom mod to? boost section of stock rom or at the end of the stock rom like tephra mods or anywhere else?

Oct 8, 2008 | 07:51 PM

#446

lan_evo_mr9

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can the stock solenoid handle that or do I have to get the 3 port?

Oct 8, 2008 | 08:00 PM

#447

RazorLab

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Quote:

Originally Posted by dan l

However if your on the 3 bar map you really can't control anything over 29psi.

I've run up to 32-33psi logged with the 3 bar. I'll try to find the logs...

Oct 8, 2008 | 08:14 PM

#448

RazorLab

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Quote:

Originally Posted by razorlab

I've run up to 32-33psi logged with the 3 bar. I'll try to find the logs...

Here are a couple log data points from two different evos:

RPM - 3719
Load - 329.38
Boost - 30.57

RPM - 4250
Load - 330.30
Boost - 31.35

RPM - 4219
Load - 328.12
Boost - 31.93

Oct 8, 2008 | 08:21 PM

#449

mrfred

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Quote:

Originally Posted by dan l

However if your on the 3 bar map you really can't control anything over 29psi.

mixmastermatt has also logged up to 32 psi.

Oct 8, 2008 | 09:13 PM

#450

house_of_senate

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From: USA

So do you guys think I would see any improvement after switching to this? I use an AEM solenoid to control boost by LOAD right now. It always seems consistent...