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Old 10-04-2005, 03:08 AM   #351
STI05
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Default Question on Knock Count

Is a knock count less than 2 something to be actually concerned with? Is this usually a false alarm anyway?
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Old 10-19-2005, 11:07 AM   #352
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If I understand correctly, the utec map must establish a timing value for the flashing cel to be activated upon knock. Thus, running the car in the stock setting or noting "ecu" in an rpm/map range will not inform you of knock if it occurs.

Is this correct?

Thanks,

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Old 10-27-2005, 07:56 PM   #353
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The UTEC does not need to be in charge of timing when it flashes the CEL for knock.
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Old 12-18-2005, 09:55 PM   #354
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Quote:
Originally Posted by chuglobal
1. Then why would Vishnu add a bung for a wideband O2 sensor in the uppipe. I don't think they'd have that type of reasoning? Vishnu or TurboXs do you guys have any comments?

2. Can anyone explain why too much fuel may cause knock in "lamemen" terms?

3. Anyone else have physical experience in the change on the A/F when the timing is changed?

4. Does calibrating the TPS make that much of a difference? What is the default and what is the goal?

5. I was reading on another post, does copying the 50% load column to the 10% load column really help reduce knocks during shifts or transition states?

6. Is there somewhere in the UTEC parameters to say ... I want 16.5psi so the boost values are a percentage of that; ie: if I'm at 80% and the specific value is 16.5 then I would get 13.2psi? Is that more close loop boost control rather than open loop?
I thought that that sensor was an EGT sensor. Im sure some one else has already said that though.
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Old 03-03-2006, 02:19 PM   #355
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Guys running 5.0 on 02/03 wrx, what value for OL/CL & CL/OL delay do you use?

Thanks,
Kev
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Old 03-03-2006, 02:22 PM   #356
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the defaults
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Old 03-03-2006, 02:28 PM   #357
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Thanks! Just wondering if making it lower would help with a goofy stumble going from CL to OL that I get.
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Old 03-09-2006, 02:28 PM   #358
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Do you have to stil reset the stock ECU when running utec when ever you do a change (i.e. pulley, intercooler (which could cause a map change), header)?

If so, is it still about 5 days for the stock ECU to learn as these items typically do not configure into your maps?

Thanks
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Old 03-09-2006, 02:56 PM   #359
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If I can remember, whenever you are in closed loop cycle the ECU is drawing off the parameter tables that have been built over time as the ECU adapts and learns to conditions.

In that respec it would probably be faster for the ECU to be reset and start learning fresh, as opposed to waiting for things like long term fuel trims to expand to fit the the new parameters of safe operation. Problem with that may be that to accomplish the accelerated learning, your engine has to feel out it's bounds of safe operation.

My ECU is really responsive and learns quicker than others I have played with. I think one thing that you can do to speed up the increasing of the ignition advance multiplier is to do the Shiv/Vishnu method of ECU reset. Bad english, I know...

Just thoughts, anybody gots real info?
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Old 03-10-2006, 08:27 AM   #360
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Also, I know this is probably going to come of as lame to ask, but since I've bumped to Stage 3 (Uppipe, TBE, TMIC)... I filled up on BP 93, I'm at 3/4 of a tank, and I've gone 105 miles. To me this seems incorrect as on Stage 2 same fuel I would get 75ish at this point?

Could it be possible when I flashed my Utec it didn't take the map? And now I'm running on just the stock ECU? - sorry for so many question, just really want to understand this process. Thanks
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Old 03-10-2006, 09:52 AM   #361
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If you flashed new firmware onto your UTEC, then this part of the manual would be of interest to you.--
"VERY IMPORTANT
Save your maps and parameters BEFORE loading the new version of software. Reload your maps after you have loaded your software upgrade. Enter your parameters manually."

If you just uploaded maps onto the UTEC (not reflashing), then check to see if the values in that map location have changed, if you can see new values, the map "took".

Did you load the map to where you thought you did? Is that the map number you are running? Do your logs have different values than before.
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Old 03-13-2006, 02:34 PM   #362
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When you say reflash, are you referring to new param? I have to check I don't think it was done right. I will have to look tonight to make sure then.

Last edited by shift_rex; 03-13-2006 at 03:06 PM.
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Old 03-16-2006, 11:21 PM   #363
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this is a real simple question, but i have the Rev6b utec and i installed it today with the abc. my maps were pre loaded into my utec so i didnt use the laptop to do anything for the install today. my abc is open 3 turns and im hitting 16ish psi by my boost gauge reading. anyway, does the red light in the middle of the utec come on all the time or only when the serial cable is hooked up with a laptop?
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Old 03-17-2006, 02:47 AM   #364
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All the time.
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Old 01-18-2007, 10:38 AM   #365
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Has anyone been able to get full use out of a serial/usb adapter for the UTEC? having major issues with mine, any help would be greatly appreciated....
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Old 02-05-2007, 08:44 PM   #366
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Default Utec ?

im selling my utec to a buddy it's off of my 03 wrx will it fit on a 06 wrx? thanks for the help.
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Old 02-06-2007, 09:48 AM   #367
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Quote:
Originally Posted by WillLewis View Post
Has anyone been able to get full use out of a serial/usb adapter for the UTEC? having major issues with mine, any help would be greatly appreciated....
Quote:
Originally Posted by H-I-M View Post
im selling my utec to a buddy it's off of my 03 wrx will it fit on a 06 wrx? thanks for the help.
I expect you would get more help with this issue if you posted a new question for this and didn't dredge up a 10 month old thread. So, start a new topic in the UTEC forum and you should get some answers.

Will> I'd be happy to tell you how my USB/Serial adapter works better than just straight serial. Post some information (in the new topic you create) about your setup and how you're trying to connect to it and I'd be glad to help.
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Old 06-16-2007, 01:38 AM   #368
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I got my wrx '03 a few years ago, and just recently, i was doing a detailed cleaning where i lifted up the passenger carpet and a turbo XS UTEC popped up in my face. i guess it was there from the previous owner.anyways, now that i have this in my hands,....any ideas?
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Old 06-26-2007, 12:09 PM   #369
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Ha, I'm the same way. Dealership had no idea what was done to the car aside from the TBE. Strange, considering there's an obviously non-stock header and uppipe, and the UTEC remote selector switch in the center console. I had no idea what the switch was so of course like a moron I sat there clicking it...thank god I left it at 0. One day I was investigating the rattly floorboard in the passenger side and ended up finding a UTEC sitting pretty Looks like I'm making a trip down to Agile later this year!

Also, sup, Sonic Yellow buddy?
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Old 06-28-2007, 12:45 PM   #370
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Yeah, guess ill just enjoy the free mod
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Old 07-07-2007, 11:00 PM   #371
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How you guys doing?I just bought a 04 sti. I need to pick up a utec computer. A used one would be ok. Another question is my turbo timmer is hooked wrong who ever had the car before me didn't hook it up right. They hooked it up to the acc so I can't take my key out when I let the turbo cool. So the green wire goes to ignition,blue to secondaryignition,purple to handbrake.
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Old 10-26-2007, 01:24 PM   #372
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hey guys i just installed my utec, and made sure that i right maps param and everything was up to date. question is im at stage 2 and i dont think im hitting peak boost. this is just the map off txs's site. what is the target boost anyways just want to make sure.
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Old 10-26-2007, 03:31 PM   #373
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OK, I'm going to take a wild guess here and say that you have a WRX and that you have a used UTEC. If you bought a new Delta UTEC, there would have been a manual that you would have read and already answered all your questions.

I'm going to take another jump and assume that you didn't install the ABC, or auxiliary boost controller (bleed valve, y-pipe). Without this installed, you won't be boosting much over 12 or 13 psi.

Once you install the ABC you can fiddle with it untill the reccomended boost target of 16.5 for a stage 2. It should start tapering down from there at about 5000 rpm to 13psi at red line.

You can search for the UTEC manual, read it, and have less chance of engine go boom. If you don't do that, then PM me and I can send you one. That would be such a sad way for an engine to die.
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Old 12-08-2007, 12:09 PM   #374
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Wow, I need help. LOL. I'm coming from an AEM on my Honda S2000. I have a bunch of questions and i've read the faqs and some threads and still am unclear.

1. Can I use a map sensor in place of my MAF sensor so I don't have to deal with the bs of it being a choke point in the intake and not reading over a certain level?

2. What exactly does the stock ECU control compared to the utec. I know it's at 60% throttle it turns on, but I've also read you can change that to the utec controlling it all the time. What parts of the map can it control at all levels.

3. Is there not any downside to not being able to tune below 60% throttle? I find it hard to believe that with a bigger turbo, full exhaust, fmic, injectors, etc. the stock ecu can run a good safe tune with good gas mileage.

4. From what I've read, with the utec you basically put in + and - numbers to change what the stock ecu is already mapped with? as in 12 degrees of timing from the stock ecu, with a utec you give a +14 value to get it to 26? This seems like it would take forever to tune.

STIs are so different from s2000's. If anyone thinks I can't do the things I want with this ecu is there a direction you can point me where I can get an affordable ems that can do all this stuff. AEM is hella expensive.
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Old 12-18-2007, 02:03 PM   #375
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Quote:
Originally Posted by blitzs2000 View Post
Wow, I need help. LOL. I'm coming from an AEM on my Honda S2000. I have a bunch of questions and i've read the faqs and some threads and still am unclear.

1. Can I use a map sensor in place of my MAF sensor so I don't have to deal with the bs of it being a choke point in the intake and not reading over a certain level?

2. What exactly does the stock ECU control compared to the utec. I know it's at 60% throttle it turns on, but I've also read you can change that to the utec controlling it all the time. What parts of the map can it control at all levels.

3. Is there not any downside to not being able to tune below 60% throttle? I find it hard to believe that with a bigger turbo, full exhaust, fmic, injectors, etc. the stock ecu can run a good safe tune with good gas mileage.

4. From what I've read, with the utec you basically put in + and - numbers to change what the stock ecu is already mapped with? as in 12 degrees of timing from the stock ecu, with a utec you give a +14 value to get it to 26? This seems like it would take forever to tune.

STIs are so different from s2000's. If anyone thinks I can't do the things I want with this ecu is there a direction you can point me where I can get an affordable ems that can do all this stuff. AEM is hella expensive.
I'll try and answer some of these Q's


1) If you run speed density you can remove all the junk thats comes before the turbo (run open turbo, no airbox, or other piping) and still have the engine run properly.

2)Utec controls timing, fuel, and boost maps. What happens is the utec overrides the stock ECU signal with its own signal, and feeds that to the engine.

3)IRC the 60% TPS is a configurable. You can change this to what ever you would like by default it is 60%. I believe I have mine set at 20% tps (Its been a long time since I've played with this value.)

4)The timing is a direct value. If you stock ecu wants to run 12 and you have 14 programmed into the utec. The utec will run 14 degrees of advance timing overriding the ecu's 12. The engine will see 14 degrees. The only place where the utec is + or - is the fuel map. subtract/add x amount of fuel as a % value. What you are doing modifying the maf voltage value to make the stock ecu think there is less/more air coming into the engine.
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