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 Mar 3 2009, 09:52 PM
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#1
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Info Seeker  Group: Posts: 75 Joined: 24-January 06 Member No.: 786  |
I have a 1g and just recently put a maf/maft on it. I have a big 16g with 510 injectors supra fuel pump and the rewire kit for the fuel pump. I still have the stock intercooler. I am using a palm m100 with the mmcd for logging. I have never done any tuning before. I have the maft set at 4 on aux 4 on base 1 on idle 1 on mid and 1 on wot. On the logger im seeing sometimes 43 counts of knock. It is usually at low rpm. I just did a log and got 28 counts of knock at 1875 rpm. The tps is at 28.5% tima is at 16 o2r is at .64 v the fto2 is at 100% and my mafs is at 232 hz. It seems like it happens when i first star to get into the throttle. Anotherone i got is at 6968 rpm with no knock tps is 58.2% tima is 19 fto2 is at 100% mafs is at 1599hz. Im not sure of boost but i have seen it over 20 psi. Im not sure what i need to do with the maft to get rid of the knock. Can anyone help out with the tuning of this thing ? thanks
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Mar 4 2009, 09:08 PM
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#2
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 Eats and sleeps DSM jargin. Group: Members Posts: 1,995 Joined: 27-November 04 From: Yates City IL Member No.: 389 |
your O2 is .64v under load?? That's real lean, o2's should be .8 or above under load (WOT). Is the o2's oscillating properly?
I would turn down the boost first and richen up the mAFT, especially at WOT. I'm not too familiar with mmcd but what are are your fuel trim (lo, med, high) running at? -------------------- 92 Eagle Talon TSI AWD "The Black Golfball" How fast can a 14B go???
91 Chevy C1500 "Problem Child" **SOLD** 01 Impala DD 07 Trailblazer Wife's new DD Cars run on blood, sweat, and horsepower... Without the first two, you can't get the last" SOB Racing "Sitting On Blocks" |
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Mar 4 2009, 09:22 PM
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#3
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Info Seeker Group: Posts: 75 Joined: 24-January 06 Member No.: 786 |
Thats the other thing they never move constantly at 100% shouldnt they fluctuate
What should the ft02 be at ? Its the only one that moves |
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Mar 5 2009, 07:21 AM
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#4
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 Post Master Group: Members Posts: 908 Joined: 7-October 03 From: Chillicothe, IL Member No.: 182 |
You want your low med and high trims to stay as close to 100 as you can. Usually between 100 and 110 is where you end up. Your O2 trim will normally bounce between 70 and 130 while driving normally. It starts to swing once the O2 sensor is up to temp and your O2 voltage will swing up and down with it.
As for your knock... That knock is one of two things. Phantom knock, which would be my first guess, or you need to turn up your mid knob and throw some fuel at it. I'm guessing with a big16g that you are just starting to build boost around 2000. That's an easy place for the knock to start. Thankfully you aren't running much load there and those 43 counts can't really hurt you. -------------------- GVR4 866/1000 = the perpetually broken car
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Mar 5 2009, 11:58 AM
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#5
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Eats and sleeps DSM jargin. Group: Members Posts: 1,995 Joined: 27-November 04 From: Yates City IL Member No.: 389 |
QUOTE (eclaser353 @ Mar 4 2009, 09:22 PM) Thats the other thing they never move constantly at 100% shouldnt they fluctuate What should the ft02 be at ? Its the only one that moves Have you driven the car much? It takes a while of driven to get the trims to move. At least 15min of driving to get anything to move. -------------------- 92 Eagle Talon TSI AWD "The Black Golfball" How fast can a 14B go???
91 Chevy C1500 "Problem Child" **SOLD** 01 Impala DD 07 Trailblazer Wife's new DD Cars run on blood, sweat, and horsepower... Without the first two, you can't get the last" SOB Racing "Sitting On Blocks" |
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Mar 5 2009, 07:09 PM
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#6
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Info Seeker Group: Posts: 75 Joined: 24-January 06 Member No.: 786 |
Yea i have been messing with this for about 2 weeks now and i drive the to work every day. Is there anyone in the peoria area that i could meet up with and take a ride and maybe get a little advice ? Im willing to pay. Thanks
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Mar 5 2009, 07:48 PM
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#7
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DSMCentral Godfather Group: Admin Posts: 3,823 Joined: 10-January 01 From: Washburn Member No.: 26 |
Here's what I do...
Start everything full rich then continue to lean out the settings until you burn a valve or pop a hole in a piston. Then all you have to do is replace the engine and turn your settings one notch richer and you are golden! 
-------------------- In Loving memory of David T Crebo
Greatness comes from the most unexpected places!  |
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Mar 5 2009, 07:55 PM
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#8
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 Post Master Group: Members Posts: 729 Joined: 19-September 02 From: New Baden, IL Member No.: 7 |
 That sounds like Kicks... 26 counts of knock!! -Still have a few more to go! -------------------- -The original (member) 007. Stop looking at me Spy!!
-98 S-10 P/U creepin' low on stock 15s!! -You come off just a little more intelligent if you know how to spell the insults in addition to saying them |
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Mar 5 2009, 08:12 PM
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#9
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Info Seeker Group: Posts: 75 Joined: 24-January 06 Member No.: 786 |
I already did that before i got the maft with a t-25.
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Mar 5 2009, 08:15 PM
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#10
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DSMCentral Godfather Group: Admin Posts: 3,823 Joined: 10-January 01 From: Washburn Member No.: 26 |
She's mean when she's lean!
-------------------- In Loving memory of David T Crebo
Greatness comes from the most unexpected places! |
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Mar 12 2009, 06:30 PM
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#11
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Eats and sleeps DSM jargin. Group: Members Posts: 1,995 Joined: 27-November 04 From: Yates City IL Member No.: 389 |
have you gotten anywhere wth the tune?
-------------------- 92 Eagle Talon TSI AWD "The Black Golfball" How fast can a 14B go???
91 Chevy C1500 "Problem Child" **SOLD** 01 Impala DD 07 Trailblazer Wife's new DD Cars run on blood, sweat, and horsepower... Without the first two, you can't get the last" SOB Racing "Sitting On Blocks" |
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Mar 14 2009, 09:14 AM
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#12
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Info Seeker Group: Posts: 75 Joined: 24-January 06 Member No.: 786 |
Im not sure. One time i had it pulling like a mother in wot, but it seemed like it was loading up in the mid. Icant tell if it is loaded or its fuel cut. It kinda like sputters. The last couple of times i ran the logger i was down to 11 counts of knock, but im not sure its real or not cuz i get it during normal cruise. I never knew this car could pull like it did.
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Mar 14 2009, 12:39 PM
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#13
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 Post Master Group: Moderators Posts: 516 Joined: 2-September 08 Member No.: 8,139 |
Keep in mind, when they feel the best, is generally about 10 second before it all turns to shit. Best bet.. when its pulling like a freight train and no knocking, turn down the boost a click or two anyway.
-------------------- Need a boost in the pocket book and with your health?
the real deal If your not interested in an extra grand a month, cool beans... Its working for me. |
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Mar 14 2009, 08:08 PM
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#14
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Eats and sleeps DSM jargin. Group: Members Posts: 1,995 Joined: 27-November 04 From: Yates City IL Member No.: 389 |
fuel cut feels like you're going to get thrown through the windshield...
Have your long term trims moved off 100% yet? -------------------- 92 Eagle Talon TSI AWD "The Black Golfball" How fast can a 14B go???
91 Chevy C1500 "Problem Child" **SOLD** 01 Impala DD 07 Trailblazer Wife's new DD Cars run on blood, sweat, and horsepower... Without the first two, you can't get the last" SOB Racing "Sitting On Blocks" |
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Mar 15 2009, 09:59 AM
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#15
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Info Seeker Group: Posts: 75 Joined: 24-January 06 Member No.: 786 |
No FTRL 100% FTRM 100% FTRH 100% they always stay on 100 never move at all. The FT02 is alway moving.
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Mar 15 2009, 06:11 PM
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#16
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Eats and sleeps DSM jargin. Group: Members Posts: 1,995 Joined: 27-November 04 From: Yates City IL Member No.: 389 |
something's not rght...your trims should be moving.
-------------------- 92 Eagle Talon TSI AWD "The Black Golfball" How fast can a 14B go???
91 Chevy C1500 "Problem Child" **SOLD** 01 Impala DD 07 Trailblazer Wife's new DD Cars run on blood, sweat, and horsepower... Without the first two, you can't get the last" SOB Racing "Sitting On Blocks" |
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Mar 17 2009, 12:55 PM
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#17
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 Zen Master DSM Group: Moderators Posts: 3,008 Joined: 10-January 01 From: in front of you Member No.: 5 |
Sounds like a bad O2 sensor to me.
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Mar 17 2009, 08:22 PM
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#18
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Info Seeker Group: Posts: 75 Joined: 24-January 06 Member No.: 786 |
Thats what i was thinking so i bought a new one and nothing changed. I changed the car from a 90 to a 91-94. I changed out ecu, coil, cass, and throttle body. Do you think that might have something to do with it ?
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Mar 18 2009, 11:04 AM
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#19
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Zen Master DSM Group: Moderators Posts: 3,008 Joined: 10-January 01 From: in front of you Member No.: 5 |
When I put my '92 engine in my '90 car I had to change the wiring harness to a '92 to get it to run right.
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Mar 18 2009, 08:25 PM
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#20
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Info Seeker Group: Posts: 75 Joined: 24-January 06 Member No.: 786 |
Yea i did all that the car runs alot better since the swap mainly because of the throttle body
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