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Old 03-04-2015, 06:26 PM   #126
01yellerCobra
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Re: Thread for those of us who tune our own cars

Quote:
Originally Posted by Mach828 View Post
I'm finishing up an excel sheet that will populate the entire load with failed maf table from a datalog of just air flow, rpm, and pedal position. Doing it manually seems like a very time consuming process. I didn't realize how important that table was. I'll upload and share it once I get it all squared away.
You can set up a histogram in Livelink Gen II.

https://www.youtube.com/watch?v=oCkSOXcmg8w
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Old 03-04-2015, 06:37 PM   #127
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Re: Thread for those of us who tune our own cars

Quote:
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I'm finishing up an excel sheet that will populate the entire load with failed maf table from a datalog of just air flow, rpm, and pedal position. Doing it manually seems like a very time consuming process. I didn't realize how important that table was. I'll upload and share it once I get it all squared away.
Remember when you're logging it that the LWFM table is in terms of RELATIVE throttle position, not absolute.
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Old 03-04-2015, 07:14 PM   #128
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Re: Thread for those of us who tune our own cars

Awesome! That is even better. Thanks for sharing. I've been essentially doing the same thing in excel, would have saved a lot of time if I had known LiveLink had this feature. Especially with MAF tuning.

Video is hard to see, so here is a link to a write up based on that video.

http://www.mercurymarauder.net/forum...ad.php?t=81526
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Old 03-04-2015, 08:46 PM   #129
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Re: Thread for those of us who tune our own cars

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Just wait until you get into the 2015 stuff. There are 32 borderline knock tables, 32 MBT tables, 32 tables for each of the slope, offset and quadratic SD terms, 32 torque and inverse torque tables,.....and on and on and on, all to add to the complexity of the HDFX TiVCT control. Then imagine for trans tuning where you have six upshifts, six downshifts, six locks and six unlocks for each of eight modes of transmission operation.
Yeah I've seen the 11-14 software and it looks fun. I'm not going to waist my money on bolt on mods to this car it will stay stock untill i decide to put a hellion twin turbo kit on it.
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Old 03-04-2015, 08:51 PM   #130
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Re: Thread for those of us who tune our own cars

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Jchambers thank you for your much more articulate way of explaining it to dan03mach! I was trying to get there with him earlier but we seemed to be arguing more than anything. No offense dan03mach.
Jchambers well spoken!
none taken at all i was just commanding mine a different way and after looking at the setpoints i put in the BFT they were pretty much right on for what my car is doing thru the curve
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Old 03-08-2015, 03:31 AM   #131
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Where is the fuel pump voltage table? I can't seem to find it.
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Old 03-08-2015, 12:27 PM   #132
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Re: Thread for those of us who tune our own cars

Returnless Fuel Pump category if in SCT. However, if you've converted to a return style system, the returnless fuel pump category is hidden once the fuel system type is changed under system parameters.
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Old 03-08-2015, 09:47 PM   #133
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Re: Thread for those of us who tune our own cars

Thanks!

Those histograms are so nice. I've got the LWFMAF table done, fuel pump voltage, and tweaked the MTF a little. Finally threw some timing at it, did some full pulls, and the car feels amazing, best its ever ran I can't wait to take it to the track.

E85 tuning will begin after I finish off this last tank of 91.
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Old 03-12-2015, 04:38 PM   #134
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Re: Thread for those of us who tune our own cars

How much spark can I get away with without detonating on 91?

Bumped her up to 19 at 3k, 18 at 4k, 17 at 5k, then 16 at 6k+. It was not happy and had some detonation just before 4k. Whoops. Also had my base fuel table set to taper from lamba to about .78. So I'm thinking combined with 18-19 degrees of timing with a 12.2 air fuel and 3-4lbs of boost, it was not happy. Is my timing too aggressive for 91, or should I just change the base fuel table transition?

Can timing affect your AFR? Advancing timing just means you are commanded spark earlier, right? Where is the piston at during ignition at 0 degrees vs. 20 degrees advanced?

Do I need to change anything in the tune because I have 96 cobra intake cams with the extra 20* of duration?
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Old 03-12-2015, 04:55 PM   #135
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Re: Thread for those of us who tune our own cars

To really see what your car likes as far as timing you really need to read the plugs of all cylinders to find which one is running the hottest, the heat mark on the ground strap. That heat mark will let you know if you can advance or need to back the timing off. You need to do this either on a dyno or street where you can kill the motor at the top of the pull and pull over to pull the plugs out or if you found which cylinder is running the hottest just pull that single plug out and read it. Remember the plugs have to be need on every pull to get an accurate marking on the plug. Doing this on the dyno would be easiest.
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Old 03-13-2015, 10:23 PM   #136
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Re: Thread for those of us who tune our own cars

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How much spark can I get away with without detonating on 91?

Bumped her up to 19 at 3k, 18 at 4k, 17 at 5k, then 16 at 6k+. It was not happy and had some detonation just before 4k. Whoops. Also had my base fuel table set to taper from lamba to about .78. So I'm thinking combined with 18-19 degrees of timing with a 12.2 air fuel and 3-4lbs of boost, it was not happy. Is my timing too aggressive for 91, or should I just change the base fuel table transition?

Can timing affect your AFR? Advancing timing just means you are commanded spark earlier, right? Where is the piston at during ignition at 0 degrees vs. 20 degrees advanced?

Do I need to change anything in the tune because I have 96 cobra intake cams with the extra 20* of duration?
I would comand .78 at any point you are in boost. My car with the cruise on and pulling a hill will make 4-5 # afr is 1.0 or 14.7 and timing is in the 20's! I dont hear anything and plugs look fine also run 93 octane
when i was at 7.5# i was running a max of 17* timing and the car was faster than it is now. Just saying?
Also your timing vs rpm should if anything got opposite of how u have it as the piston is moving faster(higher rpm) you advance the timing my car has 15* timing from 2000 to 7000rpm under wot.
18* timing at 5# and 4k dosnt sound like alot but if ur knocking then back it off!
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new times:1.7-60' 1/8-7.724 @92.4 and 11.8 @118 1/4

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Old 03-14-2015, 12:12 AM   #137
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Re: Thread for those of us who tune our own cars

Thanks Jeff. I think my head just exploded a little.

All great info. Maybe after 3 decades of tuning I will be lucky to have half your knowledge.
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Old 03-14-2015, 12:35 AM   #138
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"It was not happy and had some detonation before 4k - Whoops!"

I wish ^this was a T-shirt lol

Seriously though, I love this thread. I think this is about the most informative thread I've seen on a Mustang forum. The experience really shows when it comes to tuning.


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Old 03-15-2015, 12:07 AM   #139
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Well it wasn't detonation. It was my lean protection module engaging. I clipped the wire from and used it for my firewire. Must have been upset it wasn't getting any voltage.
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Old 03-15-2015, 01:15 PM   #140
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Re: Thread for those of us who tune our own cars

Great!
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mods:cai, flowmaster 40's, o/r x tune
best et: 13.17@107mph & 8.56@84.5 1/8
new mods: spacer, 98 cobra cams 4.10's
new times: 2.12 60' 1/8-8.44@85.97 1/4-13.0@109.76
New mods:Ported eaton swap divisonX 340 pump, 3.4 pulley@ 9#, 60# dekas, Lmaf, egr delete, aem wideband, ET streets
TUNED by ME!....with SCT proracer softwear!!
482hp / 481tq
new times:1.7-60' 1/8-7.724 @92.4 and 11.8 @118 1/4

00 SS Camaro M6 with 8.8 rear 3.73 gear. bolt on's and tune
times: 1.8 60' 12.8 @111
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Old 03-19-2015, 06:55 PM   #141
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Re: Thread for those of us who tune our own cars

Although the software isn't SCT, this site has some good info for basic knowledge
http://www.efidynotuning.com/
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Last edited by Mach828; 03-28-2015 at 10:47 AM.
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Old 03-20-2015, 09:18 AM   #142
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Re: Thread for those of us who tune our own cars

Yeah that site does hve alot of good info especially if your tuning a Fox With BE/QH.
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mods:cai, flowmaster 40's, o/r x tune
best et: 13.17@107mph & 8.56@84.5 1/8
new mods: spacer, 98 cobra cams 4.10's
new times: 2.12 60' 1/8-8.44@85.97 1/4-13.0@109.76
New mods:Ported eaton swap divisonX 340 pump, 3.4 pulley@ 9#, 60# dekas, Lmaf, egr delete, aem wideband, ET streets
TUNED by ME!....with SCT proracer softwear!!
482hp / 481tq
new times:1.7-60' 1/8-7.724 @92.4 and 11.8 @118 1/4

00 SS Camaro M6 with 8.8 rear 3.73 gear. bolt on's and tune
times: 1.8 60' 12.8 @111
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Old 03-29-2015, 01:09 AM   #143
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Re: Thread for those of us who tune our own cars

Quick question for everyone.

Just upgraded my motor and went from 4.6 to 5.3. Only other new modification is ported heads from the last tune. No injector or MAF or Intake changes since last tune.

What do I need to look at in SCT PRP? I thought there was somewhere to correct displacement.
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7.90 - 1.75 60 foot.
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Old 03-29-2015, 02:16 AM   #144
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There is. You need to rescale the displacement then adjust your MTF for the increased airflow.
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Old 03-29-2015, 10:54 AM   #145
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Re: Thread for those of us who tune our own cars

Misc => Scalars => Engine Displacement

In theory, if nothing else has changed this should be all that you need to update but it wouldn't hurt to re-verify both closed loop and open loop fueling.
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Old 03-29-2015, 02:06 PM   #146
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Re: Thread for those of us who tune our own cars

Thanks guys. Should be very close I would think.
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Wife's car: "Stella" 2003 DSG. Auto, 4:30's, 4800 Stall, aluminum DS, 26 inch slicks on 15 inch rims, skinnys, psr / aje hybrid k member and VMP tuned, GT front brakes, 1 3/4 headers and dumps, UWP pulley, Team z control arms.
7.90 - 1.75 60 foot.
12.37 1/4 mile
110.29 MPH (800 DA or so)
With Roy PSR 1.71 12.25 at 1600 DA (no tune)
4.56 gears 1.68 12.09

My Car: "Nadia" 2003 TR Auto, Parted out

Project beat Stella, engineless 03 DSG. Only goal is to beat my wife.
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Old 03-29-2015, 08:43 PM   #147
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Quote:
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Misc => Scalars => Engine Displacement

In theory, if nothing else has changed this should be all that you need to update but it wouldn't hurt to re-verify both closed loop and open loop fueling.
Thank you. I didn't have my computer tp check for sure.
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Old 04-02-2015, 07:53 PM   #148
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Re: Thread for those of us who tune our own cars

Next question....

Anyone had PRP say the template could not be found? I can't load any of my old tunes or even try to start a new one.

Edit.....needed update but Anti virus was closing the window. Got it figured out.
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Wife's car: "Stella" 2003 DSG. Auto, 4:30's, 4800 Stall, aluminum DS, 26 inch slicks on 15 inch rims, skinnys, psr / aje hybrid k member and VMP tuned, GT front brakes, 1 3/4 headers and dumps, UWP pulley, Team z control arms.
7.90 - 1.75 60 foot.
12.37 1/4 mile
110.29 MPH (800 DA or so)
With Roy PSR 1.71 12.25 at 1600 DA (no tune)
4.56 gears 1.68 12.09

My Car: "Nadia" 2003 TR Auto, Parted out

Project beat Stella, engineless 03 DSG. Only goal is to beat my wife.

Last edited by stellasmechanic; 04-06-2015 at 11:56 PM.
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Old 04-06-2015, 07:23 PM   #149
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Re: Thread for those of us who tune our own cars

Only thing I'm still battling with is the idle. Car will idle fine most of the time. I have my idle timing min set to zero. I have my IAC required airflow values set very low, I'd say 20% of the stock values with the restrictor in place. If I don't the car will want to idle at 2k. I played with the dashpot settings and right now I have them all zero'd out, which when its behaving is nice because there is zero hanging idle.

Sometimes it will be idling fine at 700-800, and then for no reason it will bump up to 1,300. Or it won't drop the idle down coming to a stop, I shut the car off, and restart and it will idle normal again.

It is really annoying because my BOV goes nuts and my car just sounds like a jet preparing for take off. Any advice before I buy a new IAC? Tried cleaning it with no success. Does the IAC duty cycle really have to be between 30-50% for idle control? If I let it flow that much air it won't even come close to idling under 1k. Perhaps this is a sign it is sticking open even though I'm commanding it to essentially be closed. If it was really closed, the car should in theory not even idle right?

Car is running open loop all the time. Closed loop throws the fueling all over the place and the car runs like trash. Idle AFR is perfect. This idle issue has been present ever since I put a smaller pulley on, even with the dyno tune I was previously running from a local shop.

Thanks!
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Old 04-07-2015, 03:08 AM   #150
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Could it have anything to do with how the air is passing over the MAF sensor? Maybe turning the housing to change the airflow path..?


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