4.2 chip copies..... - Defender Source
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  #1  
Old October 11th, 2010, 02:58 PM
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4.2 chip copies.....

One time offer, I've got 4 extra EPROMs sitting here, and can do up some copies of the factory 4.2 chip for anybody interested.
$10 shipped in the USA.

-Hans
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  #2  
Old October 11th, 2010, 03:02 PM
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So we send you an ECU?
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  #3  
Old October 11th, 2010, 03:04 PM
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No you can swap the chip out at home in everything 94/95 D90 (NAS 110s require desoldering).

Ron
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  #4  
Old October 11th, 2010, 03:06 PM
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I'll take one.
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  #5  
Old October 11th, 2010, 03:18 PM
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Yep, just pull the old chip and install the new.

In some older RRC's (92/93 and older?) the old chip needs to be desoldered, and a socket installed. I can do that too i needed, but I don't see many folks needing that. Not 100% sure about the NAS 110's to be honest. But the NAS 90's with the 3.9 Hot-Wire ECU it's just a pull and install.

I've seen a lot of posts where guys say their truck really likes the 4.2 chip, mine honestly didn't. But that's more because of mechanical issues in my engine, not the fault of the different fuel map. I'm running the composite head gaskets and didn't shave my heads, so I've got a lower compression ratio. I also know I've got a lot of blow-by in my cylinders too, it's getting near time for a new engine in mine.

I'll e-mail you my paypal / address info.

-Hans
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  #6  
Old October 11th, 2010, 03:20 PM
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Quote:
Originally Posted by Hans View Post
One time offer, I've got 4 extra EPROMs sitting here, and can do up some copies of the factory 4.2 chip for anybody interested.
$10 shipped in the USA.

-Hans
Will these be the same as a 4.2 or are they for the 4.2 computer but a hot roded?
I have a 4.2 in the NAS D110 now, but am going to the 4.6 soon.
Can you program what you have?
If so I will take one...
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  #7  
Old October 11th, 2010, 03:23 PM
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Quote:
Originally Posted by Jon_Winningham View Post
Will these be the same as a 4.2 or are they for the 4.2 computer but a hot roded?
I have a 4.2 in the NAS D110 now, but am going to the 4.6 soon.
Can you program what you have?
If so I will take one...
Stock 4.2 or 3.9 fuel maps are all I have to offer right now.

I technically CAN edit the fuel map, but would just be shooting in the dark there without a dyno and all the other test equipment to get it right.

-Hans
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  #8  
Old October 11th, 2010, 03:45 PM
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Quote:
Originally Posted by Hans View Post
Stock 4.2 or 3.9 fuel maps are all I have to offer right now.

I technically CAN edit the fuel map, but would just be shooting in the dark there without a dyno and all the other test equipment to get it right.

-Hans
ahhh I see...
well that won't help me
I wonder if I will miss out on any extra hp or tq by using the 4.2 computer and not a 4.6? or is there a difference?
will you ever be able to program more than just the 3.9/4.2 map?
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1993 NAS Defender 110 #375/500: Sold
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1991 Range Rover Hunter Green: Sold
1997 NAS Defender 90 Station Wagon Portofino Red #128: Sold
1993 NAS Defender 110 Beluga Black #215/500: sold
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  #9  
Old October 11th, 2010, 03:53 PM
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Quote:
Originally Posted by Jon_Winningham View Post
ahhh I see...
well that won't help me
I wonder if I will miss out on any extra hp or tq by using the 4.2 computer and not a 4.6? or is there a difference?
will you ever be able to program more than just the 3.9/4.2 map?
Thinking about it, but it's a low priority right now. I know there are guys that do it though, just don't remember any names right now. ECR is working with one of them from time to time, for their 4.6 builds.

-Hans

------ Follow up post added October 11th, 2010 04:28 PM ------

2 licked, 2 still available.

-Hans
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  #10  
Old October 12th, 2010, 10:08 AM
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FYI, I just updated my NAS 110 to a 4.6 and plugged in a 4.2 ROM that I burned. Made a big difference (at least to me); snappier and seems to run a bit cooler. BTW, perhaps my ECU was replaced at some point, but I didn't have to de-solder the old ROM. It was already socketed. Just have to pry off the black plastic cover over the ROM that says "LUCAS". Frightening, I know.
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  #11  
Old October 12th, 2010, 11:16 AM
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Ill take one.
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  #12  
Old October 12th, 2010, 12:05 PM
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when will you be remapping TD5's
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  #13  
Old October 12th, 2010, 12:06 PM
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Quote:
Originally Posted by newfD90 View Post
FYI, I just updated my NAS 110 to a 4.6 and plugged in a 4.2 ROM that I burned. Made a big difference (at least to me); snappier and seems to run a bit cooler. BTW, perhaps my ECU was replaced at some point, but I didn't have to de-solder the old ROM. It was already socketed. Just have to pry off the black plastic cover over the ROM that says "LUCAS". Frightening, I know.
Chance,
how did you burn the 4.2 ROM?
What did you change?
Can you burn my 4.2 when I am ready after I convert to 4.6?
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1993 NAS Defender 110 #375/500: Sold
1995 NAS Defender 90 Soft Top Beluga Black #2556: Sold
1991 Range Rover Hunter Green: Sold
1997 NAS Defender 90 Station Wagon Portofino Red #128: Sold
1993 NAS Defender 110 Beluga Black #215/500: sold
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  #14  
Old October 12th, 2010, 12:33 PM
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Originally Posted by Jon_Winningham View Post
Chance,
how did you burn the 4.2 ROM?
What did you change?
Can you burn my 4.2 when I am ready after I convert to 4.6?
With an EEPROM programmer, but you won't need to do that. Just get a chip from Hans and plug it in! Dunno if you'll have to de-solder the old one or not. I didn't have to, but maybe I got lucky.

You'll like the 4.6. Makes the 110 feel like a, dare I say it, hotrod. I give it the gas in 5th gear and it moves! Make sure and port and polish your heads.
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  #15  
Old October 12th, 2010, 01:13 PM
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I will take the last one if still available. Thanks
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  #16  
Old October 12th, 2010, 01:26 PM
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chip

If you end up with an extra, sign me up.
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  #17  
Old October 12th, 2010, 02:02 PM
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Originally Posted by newfD90 View Post
With an EEPROM programmer, but you won't need to do that. Just get a chip from Hans and plug it in! Dunno if you'll have to de-solder the old one or not. I didn't have to, but maybe I got lucky.

You'll like the 4.6. Makes the 110 feel like a, dare I say it, hotrod. I give it the gas in 5th gear and it moves! Make sure and port and polish your heads.
Sorry for the hi-jack Hans (sounds like you sold out of your chips so it is ok ...)

I drove a 4.6 NAS D110 this past winter, 3.9 computer and LT77S.
And yea it moved. I noticed that when you hit the gas it actually moved and not just make a buch of noise like the 3.9 does.
I am running a 4.2 computer now so just need the 4.6 block, R380, and the 1.4 230Q t-case.
Wonder how much that all will cost??? I guess it will make my 110 a permanate daily driver!
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  #18  
Old October 12th, 2010, 04:38 PM
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Quote:
Originally Posted by Jon_Winningham View Post
I am running a 4.2 computer now so just need the 4.6 block, R380, and the 1.4 230Q t-case.
So you're all set as far as the ECU goes. Send your LT230 to Dassler for a rebuild. He'll fix you up. That's what I did with mine. Call Eric at Pikes Peak Rovers. They've got my old R380 (~75k on it) as I had a new one put in. Send it to Dassler as well. PPR probably has another 4.6 lying around as well...
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  #19  
Old October 12th, 2010, 06:45 PM
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Ok, all 4 are licked, and a fluffer on standby.

PM's going out with the paypal address. Those that were paid yesterday were mailed out around noon today. Next batch, I'm targetting a Friday mail run.

I wish I had the diagnostic tools to remap stuff, but as I said, I'd just be guessing. Over-lean an engine, and you'll burn up the valves and pistons. over-rich, and you're clogging the cats. If I had a dyno, I'd love to, but I just don't have access to the right stuff to test it properly.

No worries on the hijacks at all, sure beats the usual "no-start" threads I usually get involved in.

-Hans
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  #20  
Old October 14th, 2010, 01:35 PM
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All 4 are now mailed out. The first two went out Tuesday, the last pair went out Today.
Thanks again guys.

If I stumble on anymore EPROM's, I'll let you guys know, but I really don't feel like making this a regularly advertised thing.

-Hans
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