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Old 12-15-2011, 10:45 PM   #26
Phatron
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I understand that if you put in an aftermarket map sensor that the UTEC can read...thats really no different than a stock ecu. But if the UTEC doesnt have boost error and turbo dynamics and just runs whatever boost is caused by the wgdc input, then you dont even need an upgraded map sensor if you have a boost gauge.

Is there UTEC software that i can play with? Or do i need the unit? I hated the hyperterminal interface before...and i had one way before the SD was out....maybe i'll give it another try.
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Old 12-15-2011, 11:03 PM   #27
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Your right, you dont get any burst feature or anything fun like that. Its a simple system.

Unfortunately you need the unit. I may have one thats dead but can be ran to play with the software. Ill look around
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Old 12-15-2011, 11:15 PM   #28
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Quote:
Originally Posted by Phatron View Post
It just doesnt make sense that the utec could boost cut at 40psi.....the stock MAP sensor is maxed so how is the utec determining you're at 40psi? I emailed txs to see what they say
You use the txs map sensor. UTEC will read up to 50psi or so. Can cut anywhere from 0 to 50psi.
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Old 12-15-2011, 11:26 PM   #29
Phatron
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You guys get many people using these? I've never even had anyone ask me to tune one. I just figured not many people used them anymore. If people are using them i'll just pick up a used one to play around with. is there any difference in the parameters available in teh old utec vs the delta.
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Old 12-15-2011, 11:27 PM   #30
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Also boomba has an aem map sensor adapter to plug the aem map sensor in the stock location. If you wanted to you could also switch to the 02-03 wrx ecu and run the carberry open source speed density rom, which gets rid of the max boost limit(or raises it to a very high number).

You may also be able to find a cobb adapter somewhere still also.
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Old 12-15-2011, 11:29 PM   #31
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Quote:
Originally Posted by Phatron View Post
You guys get many people using these? I've never even had anyone ask me to tune one. I just figured not many people used them anymore. If people are using them i'll just pick up a used one to play around with. is there any difference in the parameters available in teh old utec vs the delta.
I've got an old utec (pre delta) the injector drivers are shorted out but you can still mess with it via hyperterminal if you would like to without plugging it into the car. I'll give it to you for whatever shipping price would be.
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Old 12-16-2011, 08:18 AM   #32
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Utec don't have a good track record I guess : /, I've got an extra one in my garage with the maf scaling blown, ways tells the ecu 5 volts... But what your saying about the higher gear wgdc makes sense. My utec reads from the 90% column under WOT. But it also shows my TPS is at 97% maxed out. How exactly do you tune for the higher gear? Have your highest wgdc in the 80-90% column and leave the 100 the same wgdc or lower? I know this isn't what my thread was started for, but atleast someone is learning, and I'm sure eventually we'll get on track
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Old 12-16-2011, 10:54 AM   #33
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If you need to target higher boost levels on the stock ECU just go into the "Target boost compensation (ECT)" table and set all the values to 80%. Then go into your ecu defs and find the target boost table:

change
"<scaling units="Boost Target (psi relative sea level)" expression="(x*.15469416)-14.6959452" to_byte="(x+14.6959452)/.15469416" format="0.00" fineincrement=".08" coarseincrement="1" />"

to
"<scaling units="Boost Target (psi relative sea level)" expression="(x*.278449488)-14.6959452" to_byte="(x+14.6959452)/.278449488" format="0.00" fineincrement=".08" coarseincrement="1" />"

save and reload the defs into romraider. Then re-open your rom


This will let you target boost up to about 56psig

Last edited by Carbibbles; 12-16-2011 at 10:59 AM.
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Old 12-16-2011, 02:38 PM   #34
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Quote:
Originally Posted by Phatron View Post
You guys get many people using these? I've never even had anyone ask me to tune one. I just figured not many people used them anymore. If people are using them i'll just pick up a used one to play around with. is there any difference in the parameters available in teh old utec vs the delta.
Funny I sent JR a pic the other week of my tuning one. We tune quite a few of them actually.
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Old 12-16-2011, 04:21 PM   #35
Kill3rWill
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Quote:
Originally Posted by Carbibbles
If you need to target higher boost levels on the stock ECU just go into the "Target boost compensation (ECT)" table and set all the values to 80%. Then go into your ecu defs and find the target boost table:

change
"<scaling units="Boost Target (psi relative sea level)" expression="(x*.15469416)-14.6959452" to_byte="(x+14.6959452)/.15469416" format="0.00" fineincrement=".08" coarseincrement="1" />"

to
"<scaling units="Boost Target (psi relative sea level)" expression="(x*.278449488)-14.6959452" to_byte="(x+14.6959452)/.278449488" format="0.00" fineincrement=".08" coarseincrement="1" />"

save and reload the defs into romraider. Then re-open your rom

This will let you target boost up to about 56psig
That's incredibly helpful. But will that still allow me to retain boost cut? Or will I still need the utec for that? And won't that necessitate rescaling the whole map. Or rather the map tables
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Old 12-16-2011, 05:14 PM   #36
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Quote:
Originally Posted by Kill3rWill View Post
That's incredibly helpful. But will that still allow me to retain boost cut? Or will I still need the utec for that? And won't that necessitate rescaling the whole map. Or rather the map tables
You will still need a larger map sensor to control boost above 24.7psig, you will be able to target higher but if the ECU cannot read the higher boost it will not be able to adjust WG duty cycle as needed. Boost cut is also limited only by the map sensor.


And yes you would need to rescale the entire "target boost" table.


Its easy enough to install a larger map sensor though. Omni, AEM, GM are all good ones (AEM seems to work the best). Just change the MAP Sensor multiplier and offset in romraider to reflect the MAP sensor manufacturer's settings.
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Old 12-16-2011, 05:51 PM   #37
Kill3rWill
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I knew I would need a map sensor, but I'm glad I can still rely on the stock ecu for boost cut and adjusting wgdc aswell. Why is the aem so good? Is the gm the best for the money? And honestly I think the most ill ever run is 27-28, that have any influence on choice or tuning methods?
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Old 01-01-2012, 08:44 AM   #38
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Quote:
Originally Posted by sorrowfulkiller View Post
I've got an old utec (pre delta) the injector drivers are shorted out but you can still mess with it via hyperterminal if you would like to without plugging it into the car. I'll give it to you for whatever shipping price would be.
If all you want to do is look at maps, you can use UTI-ME without even connecting the UTEC. It's a nice utility - http://www.jeffsoftware.com/software.php?product=UTI-ME

No relation to TurboXS, but it does put the map into a user-friendly viewer.
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