205 Ecu Conversion

Talk EMS and Computer related performance

205 Ecu Conversion

Postby SuperWhite92 » Fri Feb 18, 2005 10:50 pm

Okay, there was one on ebay that I lost track of about 2 months ago. I don't even remember what company made it, but what it did was include the ECU, and a few sensors to replace the ST185 ones, so that you could run the 185 off the 205 ecu after rewiring, and such.

Anyone know what im talking about? Or am I totally off my rocker?
Members don't see the above ad. Register now - it's free!
Shaun
Image
My 1992 Alltrac is for sale again.
User avatar
SuperWhite92
GTFour God
 
Posts: 3012
Joined: Sun Aug 08, 2004 3:29 pm
Location: Fort Collins, CO

Postby Gabtoks » Sat Feb 19, 2005 2:25 am

Well I don't know of any company who would make a "kit", but a few people here and there are selling all the parts. Depending on the price, it could be a good upgrade. If you need the list of parts necessary for this upgrade, you can find all the info, a few people made up a list.

Gabe
Image
1990 ST185 Jdm Swapped
User avatar
Gabtoks
Club Member
 
Posts: 63
Joined: Sat Aug 14, 2004 12:30 pm
Location: Ontario, Canada

Postby Gary » Sat Feb 19, 2005 5:52 am

You will need
205 ECU ~$300
Harness ~$200 (you can rewire it yourself, 17 wires more, and save on this)
igniter
map
mat
iat
radiator sensor (?)
disconnect , if there the 02 sensor heater and place an resistor , Tvis, Egr
93 ST185
Image
Gary
GTFour God
 
Posts: 6430
Joined: Sun Aug 08, 2004 1:03 pm
Location: Carolina

Postby sardgt4 » Sat Feb 19, 2005 12:13 pm

Well I have a 92 st185 with a 3rd gen mr2 ecu. Not sure how much the ecu will cost you id say $100-$350. As for wiring the 92-93 will only need about 5 wires to be moved. The rest are strait forward to the 3rd gen ecus. The ignitor is the same part # as any 5sfe celicas (94+), tercels, RAV4s mr2s, and camrys. There are 2 part #s and I have tested both parts and they work. I paid $15 or so for them. If you do not change this your rev limiter will be at 5500 rpms no other side effects. THe map sensor is like $280 but I didnt notice any change in my car after changing it. My theory is that 92-93 map sensors are the same as the 3rd gens because 90-91 st185s have 12psi fuel cuts and 92-93s have 15psi fuel cuts. I theorized that the difference in fuel cuts are due to the map sensor. I wouldnt waste your money on the map sensor since you have a 92. Save the $ and get a super afc or emanage or some other fuel controller. THe mat i used a GM one. The iat I used a resistor. Didnt really see anything else that needed to be done except disconnect the egr. If you get the st205 ecu I know that you have to put in a resistor for the intercooler water level so it doesnt go into safe mode. Hope this helps.

John 92 st185
03 g35 coupe


You will need
205 ECU ~$300
Harness ~$200 (you can rewire it yourself, 17 wires more, and save on this)
igniter
map
mat
iat
radiator sensor (?)
disconnect , if there the 02 sensor heater and place an resistor , Tvis, Egr
_________________
sardgt4
Club Member
 
Posts: 147
Joined: Sun Aug 15, 2004 7:32 pm

Postby Gary » Sat Feb 19, 2005 1:31 pm

sardgt4 wrote:Well I have a 92 st185 with a 3rd gen mr2 ecu. Not sure how much the ecu will cost you id say $100-$350. As for wiring the 92-93 will only need about 5 wires to be moved. The rest are strait forward to the 3rd gen ecus. The ignitor is the same part # as any 5sfe celicas (94+), tercels, RAV4s mr2s, and camrys. There are 2 part #s and I have tested both parts and they work. I paid $15 or so for them. If you do not change this your rev limiter will be at 5500 rpms no other side effects. THe map sensor is like $280 but I didnt notice any change in my car after changing it. My theory is that 92-93 map sensors are the same as the 3rd gens because 90-91 st185s have 12psi fuel cuts and 92-93s have 15psi fuel cuts. I theorized that the difference in fuel cuts are due to the map sensor. I wouldnt waste your money on the map sensor since you have a 92. Save the $ and get a super afc or emanage or some other fuel controller. THe mat i used a GM one. The iat I used a resistor. Didnt really see anything else that needed to be done except disconnect the egr. If you get the st205 ecu I know that you have to put in a resistor for the intercooler water level so it doesnt go into safe mode. Hope this helps.

John 92 st185
03 g35 coupe


That's a good info John, especially on 92-93 :D
Wanna do a write up?
5 more wires is not bad at all.
Do you have any problem with octane rating?
I check on MR2 board only to find that they sell ECU for ~$300. :(
93 ST185
Image
Gary
GTFour God
 
Posts: 6430
Joined: Sun Aug 08, 2004 1:03 pm
Location: Carolina

Postby sardgt4 » Sat Feb 19, 2005 9:20 pm

Yea it was 5 or 7 wires or so not many. At first I was using the wiring diagram from a 90 from the BGB and I had no spark. I moved like 14 wires or so ALOT of work. Then one of my buddies suggested just pluggin the damn wires in the ecu strait without moving anything and i got spark at the ignition. Then i figured the 92-93s had a different wiring diagram. Couldnt find the diagram online so I just used one off the 2nd gen mr2 and it worked. I have the 3rd gen ecu wiring schematics in japanese. I can send you a copy if youd like. Its very hard to decipher tho. I can just send you the cracked version (the pinouts I determined). You're gonna laugh if you see how dirty and beat up this piece of paper is. A few notes to add I used the 2 res off the afm for the AIT. The other 2 i just left dead alone. The map sensor just plug it in thats it. There no more egr so I used the wires off that for the MAT sensor. I made an adaptor to put the MAT into the cold injector location you will not need that anymore. As for upgrading to 550s I dont know if you need to because the car runs really rich and retarded for some reason. I had the super afc settings leaned out 30% at WOT on the high rpms and advanced the timing up to 20 degrees at one point. THe car ran awesome, but I didnt feel comfortable with the timing so advanced. It was good at WOT but at idle and low throttle it felt too advanced. A guy named Lindsley has the 3rd gen ecu too on his 92 alltrac in the eastcoast and he had reported similar results in leaning it out and whatnot too. I dynoed my car at 205 at the wheels at 14psi with the timing advanced to 15 degrees. The WB o2 sensor read real rich so I advanced the timing to 20 when I got home. THe car ran much much better. Ive been driving on this setup for 2 years with no problems. My car is currently down upgrading to a t3/t04e. I am done with it just need to sandblast the inside of the intercooler pipes to make sure theyre clean. I also took off the super afc and went with a emanage. I really need to tune it now. Just with the ecu alone you will not feel any power, you will have to get some sort of fuel controller such as a afc.

Hope this helps,

John 92 st185
sardgt4
Club Member
 
Posts: 147
Joined: Sun Aug 15, 2004 7:32 pm

Postby Gary » Sat Feb 19, 2005 9:41 pm

Thanks John. If it's not difficult for you, please send me both versions. I'll ask my Japanese friend to help me out.
93 ST185
Image
Gary
GTFour God
 
Posts: 6430
Joined: Sun Aug 08, 2004 1:03 pm
Location: Carolina

Postby saved_1992 » Sat Feb 19, 2005 11:57 pm

ok one of you guys do a write up on this please, i have a 205 ecu maybe i can figure out how to install on the 165 :D
mike
omaha,ne
1988 work in progresss (205 assem w/tdo6/haltech)sold
1988 a driver (RED) sold
1992 the keeper (RED)
1993 sold to 2of81 (RED)
saved_1992
Established Member
 
Posts: 1677
Images: 0
Joined: Sun Aug 08, 2004 1:53 pm
Location: omaha,ne

Postby alltracman78 » Tue Feb 22, 2005 2:42 pm

Yeah, a write-up would be real nice.... :D
Image
User avatar
alltracman78
GTFour God
 
Posts: 4677
Joined: Mon Aug 09, 2004 9:04 am
Location: Ma

Postby sardgt4 » Thu Feb 24, 2005 6:57 am

Sorry guys for the delay. I will do a writeup and send ecu schematics soon after tuning the emanage. I was busy with my new turbo. Just finished it today. It was a $500 very well spent. I have a few pics if you guys wanna see. Now i have to tune the emanage to get it running right. Lotsa things to do, no time and money.

John 92 st185
03 g35 coupe
sardgt4
Club Member
 
Posts: 147
Joined: Sun Aug 15, 2004 7:32 pm

Postby Gary » Thu Feb 24, 2005 7:17 am

Don't worry John. Nothing's hurry.
I suppose to get a 3rd gen ecu but the seller backed off the deal.
May be he realized that it's too cheap for the ecu. :shoots:
93 ST185
Image
Gary
GTFour God
 
Posts: 6430
Joined: Sun Aug 08, 2004 1:03 pm
Location: Carolina

Postby 5speedGT4 » Wed Apr 13, 2005 2:36 pm

Im bring this thread back from the dead!

Im about to do this swap, i got the ecu and sensors and such needed! Now i just have to figure out how to do this?

Any more info gary? anyone else?
Andrew
ST165<----Sold
5speedGT4
Club Member
 
Posts: 872
Joined: Fri Aug 13, 2004 4:16 am
Location: Nebraska

Postby ChrisD » Wed Apr 13, 2005 4:52 pm

Compare your ECU pinouts to those on this page: http://www.celicatech.com/forums/showthread.php?t=1526

The 205 wiring diagrams are there as well.
1988 ST165
1994 ST205 WRC
ChrisD
Established Member
 
Posts: 1625
Joined: Thu Aug 12, 2004 4:30 am
Location: Calgary AB Canada

Postby 5speedGT4 » Wed Apr 13, 2005 5:49 pm

eh, i kinda figured that out... im just looking to see if there are any other things i ought to know that i may not catch otherwise....
Andrew
ST165<----Sold
5speedGT4
Club Member
 
Posts: 872
Joined: Fri Aug 13, 2004 4:16 am
Location: Nebraska

Postby enzytebob » Thu Apr 14, 2005 3:02 am

Question...

What does Mr. Butt Dyno have to say about all this?
enzytebob
Club Member
 
Posts: 173
Joined: Thu Sep 30, 2004 8:14 pm
Location: Mostly in the woods

Next

Return to EFI Corner

Who is online

Users browsing this forum: No registered users and 1 guest