Anybody have problems with these ECU's causing eratic idles?
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i did, so i swapped out for a 173. still isnt perfect, but idle is improved.Originally posted by formula driver View PostIG: @Baye30
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I went from a 173 to a 525 and think it improved.
Sarcasm is a body's natural defense against stupid.
When a man talks dirty to a woman, it's sexual harassment. When a woman talks dirty to a man, it's £3.95 per minute.
"My mother never saw the irony in calling me a son-of-a-bitch." Jack Nicholson"
Old age and treachery will always overcome youth and skill.
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153 has been know to cause erratic behaviour. Many people have switched over to the 173 ECU and been very very happy.Comment
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what is required to switch from 173 to 153 other than a new 173 ecu? any harnesses or adapters of any sort?Comment
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Just swap out the ecu and you're done
Sarcasm is a body's natural defense against stupid.
When a man talks dirty to a woman, it's sexual harassment. When a woman talks dirty to a man, it's £3.95 per minute.
"My mother never saw the irony in calling me a son-of-a-bitch." Jack Nicholson"
Old age and treachery will always overcome youth and skill.
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for a performance chip, can i fit a 173 chip into a 153 ecu or would i need a whole new 173 ecu?Originally posted by lordofthewaters View PostComment
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You'd need the whole 173 ecu.
Sarcasm is a body's natural defense against stupid.
When a man talks dirty to a woman, it's sexual harassment. When a woman talks dirty to a man, it's £3.95 per minute.
"My mother never saw the irony in calling me a son-of-a-bitch." Jack Nicholson"
Old age and treachery will always overcome youth and skill.
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thanks for the helpComment
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I've switched my 153 whole unit for a 173 whole unit for this reason, but the car will not idle, and will die if gas is not applied. Does anyone know how I can fix this?Comment
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Sounds like you need a new ICV.Originally posted by Heresy_Act View Post1995 Porsche 993 6 speed
2001 BMW M3 6 speed - DD
2001 BMW 530iA Sport - Hers
2005 KTM 450EXC 6 speed
Gone:
1988 BMW M3 2.5 EVOIII Clone
1988 BMW 325is x2
1985 BMW M635CSI 286hp
2001 KTM 400MXCComment
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I swapped a 173 in place of a 153...idle got better, but it still sounds "cammed"
I like it.
Closing SOON!"LAST CHANCE FOR G.A.S." DEAL IS ON NOW
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Thanks for 10 years of fun!Comment
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I do'nt believe this is the case because the car ran perfectly with the old DME.Originally posted by jmarch View PostComment
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Back in the day I had a 153 ECU. I tried swapping for a 173 but the car did not run...well it did, just not very well.
Some claim it is a direct swap, but I have seen others claim that you needed to rework the wiring harness. Hell, I think I even saw an article about reworking the harness for a 153 to 173 swap at one point.
I eventually gave up and kept the 153 until I swapped engines.2004 SL600 - Current
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2006 SL55 AMG - Sold
2004 M3 SMG - Sold
1999 540i Sport - Sold :(
1989 325i coupe- Sold
1988 325is M50 M-tec - Sold :(Comment
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87 325iC came with # 153.
some what rough idle., bad o2 readings, ecu fault code 1221 (bad o2 sensor)
randomly started to buckle between 3500 to 4500 rpms, it would happen now and then, it progressed to an almost daily issue, eventually it almost left me stranded., limped it home.
I already had a 173 unit at hand, so swapped it out and all is well.
basically the 153 burned away gradually.
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