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Need an ecu for my colt
http://4g61t.org/forum/viewtopic.php?f=6&t=22200		 Page 1 of 1
Author:  mitsuevoiix [ Thu Aug 16, 2007 12:44 pm ]
Post subject:  Need an ecu for my colt
Where can i buy one of these 90 ecus? right now the car is running the stock 4g61t ecu, can i use an awd 90 ecu or does it have to be from a fwd?
Author:  89Mirageman [ Thu Aug 16, 2007 1:03 pm ]
Post subject: 
They are all over ebay or I'm sure some of the members here may have one laying around. FWD or AWD does not matter but it must be from a turbo car of course.
Author:  colt-r [ Thu Aug 16, 2007 1:29 pm ]
Post subject: 
If you run a 90 ECU you have to run the 450's and 1G MAF... otherwise the car will run like poo.
Author:  mitsuevoiix [ Thu Aug 16, 2007 4:01 pm ]
Post subject: 
Quote:
If you run a 90 ECU you have to run the 450's and 1G MAF... otherwise the car will run like shit.
im going to run the gm maf with maf-t that will work and i can set it to what ever injectors i have corect?
Author:  89Mirageman [ Thu Aug 16, 2007 4:23 pm ]
Post subject: 
If you're going to have some sort of fuel control you really won't need a 1g ecu. The maf-t should take care of that.
Author:  mitsuevoiix [ Thu Aug 16, 2007 6:26 pm ]
Post subject: 
Quote:
If you're going to have some sort of fuel control you really won't need a 1g ecu. The maf-t should take care of that.
Well doesnt the ecu also make the car run better...and elimate things such as boost spikes?
Author:  89Mirageman [ Thu Aug 16, 2007 9:11 pm ]
Post subject: 
Quote:
Quote:
If you're going to have some sort of fuel control you really won't need a 1g ecu. The maf-t should take care of that.
Well doesnt the ecu also make the car run better...and elimate things such as boost spikes?
I've never heard that, I would think the only difference would be that it was set to run 390cc injectors where the M/T 4G63T ecu is set to run 450's. If you're just looking to pop in some 450's and plan to run the maf-t setup anyway I would think you'd be OK with the stock ecu. Either way non-eprom 90 turbo ecu's can be had for $100 or less all day long.
Author:  gsx [ Thu Aug 16, 2007 9:33 pm ]
Post subject: 
I run a 1.6L stock colt ECU (with DSMlink). 1600cc injectors

According to Dave Mertz at DSMlink the 1.6L ECU and the 2.0 DSM ecu are the exact same ECU exept for the 1.6L ECU does not have a track in it for the pin that drives the boost gauge. He did however say he could add that track in the ECU.

Now this stands true for 1.6L turbo E-prom Ecu's I cannot speak for any other ones.
Author:  turbomirage89 [ Thu Aug 16, 2007 9:53 pm ]
Post subject: 
Thats the one I have... :D and did you say 1600cc injectors? :o
Author:  mitsuevoiix [ Thu Aug 16, 2007 10:33 pm ]
Post subject: 
so lemme get this all 89 turbo cars have a 4g61t eprom ecu and all non turbos have non eproms? also what is the difference than besides the injectors between a 4g61t ecu and a 90 dsm ecu?
Author:  89coltgt [ Fri Aug 17, 2007 2:40 am ]
Post subject: 
Quote:
so lemme get this all 89 turbo cars have a 4g61t eprom ecu and all non turbos have non eproms? also what is the difference than besides the injectors between a 4g61t ecu and a 90 dsm ecu?
Not all 4g61t cars had eprom ecus. The 90 4g63t ecu is calibrated for 450's and a 4g63t maf and the 4g61t ecu is calibrated for 390's and a 4g61t maf.
Author:  mitsuevoiix [ Fri Aug 17, 2007 11:54 am ]
Post subject: 
o i see...now if i am running a gm maf wit maft i do not need a 90 dsm ecu? also does it defeat the purpose of dsmlink as well?
Author:  89Mirageman [ Fri Aug 17, 2007 12:56 pm ]
Post subject: 
Quote:
o i see...now if i am running a gm maf wit maft i do not need a 90 dsm ecu? also does it defeat the purpose of dsmlink as well?
No, the maf-t does not take the place of dsmlink. All it does is let you plug in the 3" or 3.5" GM mas and converts the wiring to work with the stock ecu. The maf-t has a set of knobs and switches that lets you run larger injectors. You will still need a logger to make the most of the maf-t as it only gives you a starting point for tuning.

DSM link is a completely different deal that allows much more tuning, hence the higher price tag.

Also only some ecu's are eprom. You'll have to open up the case to see if yours is one of them. It doesn't have to be for the maf-t, it does for dsm link.
Author:  mitsuevoiix [ Fri Aug 17, 2007 2:10 pm ]
Post subject: 
Quote:
No, the maf-t does not take the place of dsmlink. All it does is let you plug in the 3" or 3.5" GM mas and converts the wiring to work with the stock ecu. The maf-t has a set of knobs and switches that lets you run larger injectors. You will still need a logger to make the most of the maf-t as it only gives you a starting point for tuning.

DSM link is a completely different deal that allows much more tuning, hence the higher price tag.

Also only some ecu's are eprom. You'll have to open up the case to see if yours is one of them. It doesn't have to be for the maf-t, it does for dsm link.
kk thanx for your help i think im cleared up now
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