Custom ECUs?

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Hogg
Posts: 324
Joined: Fri Oct 27, 2006 6:25 pm

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Hey Team,

Im wondering what is out there for the Q45 or if its even possible to modify the stock ECU for performance. Ive heard of other ECUs being able to cancel out or ignore engine retarding symptoms say, if a sensor was bad your car would run crappy or whatever. Is it possible to tell your ECU to completely forget that sensor and still have it run fine?

Curious to know how these race guys are running their VH45DEs and other series motors with absolutely no wires or any sort of emissions or any sensor on the motor, and still put down amazing numbers and performance...

???-Spence


SUB ZERO CAR FANATIC
Posts: 334
Joined: Mon Jan 01, 2007 4:51 pm
Car: 1993 Infiniti Q45 ( SOLD)
1997 Cadillac Deville Concourse
1998 Cadillac Seville STS
2009 Infiniti QX56 LE

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Hogg wrote:Hey Team,

Im wondering what is out there for the Q45 or if its even possible to modify the stock ECU for performance. Ive heard of other ECUs being able to cancel out or ignore engine retarding symptoms say, if a sensor was bad your car would run crappy or whatever. Is it possible to tell your ECU to completely forget that sensor and still have it run fine?

Curious to know how these race guys are running their VH45DEs and other series motors with absolutely no wires or any sort of emissions or any sensor on the motor, and still put down amazing numbers and performance...

???-Spence
Check with Wes here on nico, he's our moderator.He's doing a batch of ECU's for NICO members.Your Q must be a 1990-1993 model i believe,in 94 they started using OBD II, the Nico ECU's are all OBD I.I believe the starting cost for a dual switcher is $250.

There is anotherone out on the market made byJIM WOLF TECHNOLOGIES, but there's are around $600.

There is one more manufacture but i cant think of thename at the moment.

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qsiguy
Posts: 1961
Joined: Sun Mar 20, 2005 8:12 pm
Car: 1994 Infiniti Q45 Turbo

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Not exactly correct but close. He's doing a batch of ecu's but he's only doing the 90-93 ECU's because they are 8 bit. The '94-95's are 16 bit but still OBD I. They are just modified in a different way that requires some parts he's still working on.

The '90-93 ECU will work fine in the '94 models. I have one myself from a '93 in my '94. The NICO ECU's are plug and play in a few pre tuned programs. If you want to do some custom tuning there are options. I can do about anything I want with the tune of an ECU. Since you didn't mention any specific year I can't give you any specifics except that if it's newer than '95 your options drop significantly.

There's another thread probably within a few lines of this one that will have pretty much all the details of the NICO ECU's.

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Raxephon
Posts: 1910
Joined: Tue Jul 27, 2004 8:53 am
Car: '04 RX8...for the moment...

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Nico ECUMegasquirtBuild and burn your own bin files off the original bin in the factory ecu.

I don't know of any others currently being used, but I'm sure there are some standalones that can be used as well.

Hogg
Posts: 324
Joined: Fri Oct 27, 2006 6:25 pm

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Plugging into my own computer? Id love to do a custom setup.

Think when Wes prints off my ECU he can do a couple deletes such as the EGR temp sensor? or some of the solenoids and vacuum hose stuff on the engine?

Id really be interested in making a completely clean motor and engine bay with as minimal crap as possible to make the engine run.

-Spence

maxnix
Posts: 22627
Joined: Mon Jul 22, 2002 8:11 pm
Car: 1995 Infiniti Q45
1995 Infiniti Q45t
2000 Infiniti Q45

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Spence, you need to read a few more posts and study the FSM to understand how these sytems work.

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elwesso
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I am always an email or a phone call away. Hit me up and see what i can do, i am not a difficult person to get ahold of.

Hogg
Posts: 324
Joined: Fri Oct 27, 2006 6:25 pm

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I emailed you Wes about getting one of these and didnt get a response :P this was a few weeks back I dunno if you were there or not. Whatever.

Ive studied the FSM to death - still dont really get how that would help me build a custom computer that ignores unneccesaries though?

Sorry if Im an idiot,-Spence

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elwesso
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Try me again dude, maybe it got caught by my spam filter, i usually reply to all my emails in a day or so. or maybe my reply got caught by your spam filter (that does happen sometimes)

maxnix
Posts: 22627
Joined: Mon Jul 22, 2002 8:11 pm
Car: 1995 Infiniti Q45
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Hogg wrote:Ive studied the FSM to death - still dont really get how that would help me build a custom computer that ignores unneccesaries though?
That and the previouis posts should clue you in on why you don't want to disable those "unncessesary" systems.


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