Building a Tune

Dirmaid · 10-12-2011, 09:02 AM

I recently got a new Sniper Special Forces tuner (which is rediculously epic) and I'm trying to build a 93 octane race tune. I don't care about gas mileage, jut safe power gains. Before you ask, yes I can modify the spark advance and global fuel, the afr, everything like that.

I'm running the 4.0l SOHC with the 5r55e tranny, 03 engine with 50k miles. I'd wait to retune it at the track so no worries about getting the truck there on this tune.

Any suggestions on how to squeeze the most of of this engine tune wise?

Bird · 10-12-2011, 09:51 AM

Get a wideband insalled and then start datalogging : A/F, Spark, Knock retard, rpm, IAT, load. For best WOT power, you want no knock retard and 13.0 A/F ratio throughout your WOT powerband. Before you even start any additional tuning, you want to address any knock retard you may already have whether it's from a lean cylinder, too much timing, etc. As these things are factory tuned for 87 octane, you 'should' be able to globally add 4 degrees of timing and then tweak from there. The old rule of thumb is to add timing till you see a speed dropoff in the 1/4 mile, but the timing under the whole curve is now more tunable and there's gain's to be had in tweaking that. If you're getting knock retard in a certain range of RPM, you can tweak the timing / fuel in that range to fix it.

Bird

Dirmaid · 10-12-2011, 10:11 AM

alright, ill hook my laptop to the truck and make a coupke runs soon. it has a 93 octane tune already that just needs the fine tuning that you were talking about, i just wasnt sure what all i need to look at. thanks for the re[ply and ill let yoy know what all i find in my data logs

Hahnsb2 · 10-12-2011, 11:27 AM

Without a wideband you really aren't going to get far.

Bird · 10-12-2011, 11:30 AM

Quote:

Originally Posted by Hahnsb2

Without a wideband you really aren't going to get far.

EXACTLY RIGHT - without a wideband, you're just guessing at things and taking chances on messing something up

Bird

Dirmaid · 10-12-2011, 11:52 AM

i can monitor the O2 output from my tuner, so could i just replace the stock o2 with a wideband 02 and not get the entire standalone kit, or will the ecu not return the right data and i need the meter and everything?

Bird · 10-12-2011, 12:50 PM

ECU won't give you the right output - need to mount the wideband sensor in th ey-pipe and get a meter. Also, if your logger has the capabiliites to bring in an outside input, you'll be able to read the wideband through it's interface.

Bird

06RangerXLT · 10-12-2011, 12:57 PM

X like 6 on the wideband. but unless you have a turbo or supercharger or some heavy engine mods, you shouldnt expect more then 25 HP gains.

**disciplerocks** · 10-12-2011, 04:57 PM

Just harp on everyone else's post, you NEED a wideband. Bird has some good info to get you started up there. I'd also look into your tranny shift points. Too bad you didn't get the Commando version and had full control over your fuel maps and everything. But the Special Forces really is more than enough for an N/A application.

Dirmaid · 10-12-2011, 11:00 PM

do yall have any suggestions on a particular wideband kit? I'm looking for that sweet spot: good but not the best, inexpensive but not cheap

Hahnsb2 · 10-13-2011, 11:19 AM

Aem uego.

Dirmaid · 10-13-2011, 01:06 PM

I was actually looking at those earlier, so now I'll definitely look into that. As of right now, the software has a 93 octane tune built for daily driving so I'll drive it like that until I get the wideband to do the performance tune. I definitely want to run all of the 87 out of the tank before I even attempt to load the performance tune just in case, so now is just a good of time as any right?

10-12-2011, 09:02 AM	#1
Dirmaid Member Join Date: Feb 2011 Location: Louisiana Year: 2001 Make: Ford Model: Ranger XLT Engine: 4.0 SOHC Class: 2WD Used For: Street\Strip Posts: 250 Rep Power: 5 iTrader: (2)	Building a Tune I recently got a new Sniper Special Forces tuner (which is rediculously epic) and I'm trying to build a 93 octane race tune. I don't care about gas mileage, jut safe power gains. Before you ask, yes I can modify the spark advance and global fuel, the afr, everything like that. I'm running the 4.0l SOHC with the 5r55e tranny, 03 engine with 50k miles. I'd wait to retune it at the track so no worries about getting the truck there on this tune. Any suggestions on how to squeeze the most of of this engine tune wise? __________________ ::: 2001 Ranger XLT, MBRP cat back exhaust, custom intake in the works, wideband and custom tune on a 2003 4.0 SOHC paired with 2wd auto tranny::: Code named: Kermit Build thread
	Tweet

10-12-2011, 09:51 AM	#2
Bird Member Join Date: Aug 2007 Location: San Antonio, Tx. Posts: 252 Rep Power: 12 iTrader: (0)	Get a wideband insalled and then start datalogging : A/F, Spark, Knock retard, rpm, IAT, load. For best WOT power, you want no knock retard and 13.0 A/F ratio throughout your WOT powerband. Before you even start any additional tuning, you want to address any knock retard you may already have whether it's from a lean cylinder, too much timing, etc. As these things are factory tuned for 87 octane, you 'should' be able to globally add 4 degrees of timing and then tweak from there. The old rule of thumb is to add timing till you see a speed dropoff in the 1/4 mile, but the timing under the whole curve is now more tunable and there's gain's to be had in tweaking that. If you're getting knock retard in a certain range of RPM, you can tweak the timing / fuel in that range to fix it. Bird __________________ 93 Splash - 4.0 SOHC, C-4 tranny, 4.10 Auburn LS, M-112 01 Lightning - built 5.4, Whipple , 2600 stall TC, Bassani Exhaust 1998 SS Camaro - never knew killing Cobras would be so easy.
	Tweet

10-12-2011, 10:11 AM	#3
Dirmaid Member Join Date: Feb 2011 Location: Louisiana Year: 2001 Make: Ford Model: Ranger XLT Engine: 4.0 SOHC Class: 2WD Used For: Street\Strip Posts: 250 Rep Power: 5 iTrader: (2)	alright, ill hook my laptop to the truck and make a coupke runs soon. it has a 93 octane tune already that just needs the fine tuning that you were talking about, i just wasnt sure what all i need to look at. thanks for the re[ply and ill let yoy know what all i find in my data logs __________________ ::: 2001 Ranger XLT, MBRP cat back exhaust, custom intake in the works, wideband and custom tune on a 2003 4.0 SOHC paired with 2wd auto tranny::: Code named: Kermit Build thread
	Tweet

10-12-2011, 11:27 AM	#4
Hahnsb2 Member Join Date: Aug 2007 Location: Battle Ground WA Year: 88-95 Make: Ford-Dodge Model: BII-Dakota Engine: 4.0-5.2 Turbo Class: Real 4WD, 3WD. Used For: Going where I point it-Going fast Posts: 4,408 Rep Power: 24 iTrader: (1)	Without a wideband you really aren't going to get far. __________________ 88 Bronco II, 4.0L, M5OD, 4.56s, Aussie Locked 8.8/D35, 1354M, 34" LTBs 95 Dakota CC, 5.2, 5 Spd, 2WD,Turbo, Megasquirt, 3.55s, Locked
	Tweet

10-12-2011, 11:52 AM	#6
Dirmaid Member Join Date: Feb 2011 Location: Louisiana Year: 2001 Make: Ford Model: Ranger XLT Engine: 4.0 SOHC Class: 2WD Used For: Street\Strip Posts: 250 Rep Power: 5 iTrader: (2)	i can monitor the O2 output from my tuner, so could i just replace the stock o2 with a wideband 02 and not get the entire standalone kit, or will the ecu not return the right data and i need the meter and everything? __________________ ::: 2001 Ranger XLT, MBRP cat back exhaust, custom intake in the works, wideband and custom tune on a 2003 4.0 SOHC paired with 2wd auto tranny::: Code named: Kermit Build thread
	Tweet

10-12-2011, 12:50 PM	#7
Bird Member Join Date: Aug 2007 Location: San Antonio, Tx. Posts: 252 Rep Power: 12 iTrader: (0)	ECU won't give you the right output - need to mount the wideband sensor in th ey-pipe and get a meter. Also, if your logger has the capabiliites to bring in an outside input, you'll be able to read the wideband through it's interface. Bird __________________ 93 Splash - 4.0 SOHC, C-4 tranny, 4.10 Auburn LS, M-112 01 Lightning - built 5.4, Whipple , 2600 stall TC, Bassani Exhaust 1998 SS Camaro - never knew killing Cobras would be so easy.
	Tweet

10-12-2011, 12:57 PM	#8
06RangerXLT Member Join Date: Jul 2010 Location: Georgetown Ontario Year: 2006 Make: Ford Model: Ranger XLT Extended Cab Engine: 4.0L Class: 2WD Country Used For: Shenanigans Posts: 2,918 Rep Power: 22 iTrader: (0)	X like 6 on the wideband. but unless you have a turbo or supercharger or some heavy engine mods, you shouldnt expect more then 25 HP gains. __________________ Camburg BTF mid-travel kit, 64's, 33x12's,E-Fan Conversion, 4.56 8.8, McNeil Glass
	Tweet

10-12-2011, 11:00 PM	#10
Dirmaid Member Join Date: Feb 2011 Location: Louisiana Year: 2001 Make: Ford Model: Ranger XLT Engine: 4.0 SOHC Class: 2WD Used For: Street\Strip Posts: 250 Rep Power: 5 iTrader: (2)	do yall have any suggestions on a particular wideband kit? I'm looking for that sweet spot: good but not the best, inexpensive but not cheap __________________ ::: 2001 Ranger XLT, MBRP cat back exhaust, custom intake in the works, wideband and custom tune on a 2003 4.0 SOHC paired with 2wd auto tranny::: Code named: Kermit Build thread
	Tweet

10-13-2011, 11:19 AM	#11
Hahnsb2 Member Join Date: Aug 2007 Location: Battle Ground WA Year: 88-95 Make: Ford-Dodge Model: BII-Dakota Engine: 4.0-5.2 Turbo Class: Real 4WD, 3WD. Used For: Going where I point it-Going fast Posts: 4,408 Rep Power: 24 iTrader: (1)	Aem uego. __________________ 88 Bronco II, 4.0L, M5OD, 4.56s, Aussie Locked 8.8/D35, 1354M, 34" LTBs 95 Dakota CC, 5.2, 5 Spd, 2WD,Turbo, Megasquirt, 3.55s, Locked
	Tweet

10-13-2011, 01:06 PM	#12
Dirmaid Member Join Date: Feb 2011 Location: Louisiana Year: 2001 Make: Ford Model: Ranger XLT Engine: 4.0 SOHC Class: 2WD Used For: Street\Strip Posts: 250 Rep Power: 5 iTrader: (2)	I was actually looking at those earlier, so now I'll definitely look into that. As of right now, the software has a 93 octane tune built for daily driving so I'll drive it like that until I get the wideband to do the performance tune. I definitely want to run all of the 87 out of the tank before I even attempt to load the performance tune just in case, so now is just a good of time as any right? __________________ ::: 2001 Ranger XLT, MBRP cat back exhaust, custom intake in the works, wideband and custom tune on a 2003 4.0 SOHC paired with 2wd auto tranny::: Code named: Kermit Build thread
	Tweet

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