Exhaust question and tuner question.....dont laugh lol

Drick · September 20th, 2009, 01:15 PM

Ok well I know my way around fox bodys and can do whatever I need to them. But the computerized mod mustangs confuse the hell out of me with their tuners and stuff.

Anyway im about to order a BBK off road X pipe for it. Question is once I put it on its gonna trigger a check engine light because of no cats, but will it run like shit because its compensating for the new air flow or whatever.

Or would you guys suggest I get a tuner before I do anything to the air flow because I also plan on getting a new throttle body and plenum soon too.

SWEET2KSTANG · September 20th, 2009, 01:21 PM

just get a set of MIL eliminators and you will be good.

Shaun03GT · September 20th, 2009, 01:23 PM

It wont run like shit. The Air/Fuel will probally be off alittle. So listen for any pinging. If it pings you'll need a dyno tune because the 2Vs or GTs dont have knock sensors to retard the timing. Id run 93 gas in it to be safe.

SWEET2KSTANG · September 20th, 2009, 01:28 PM

stock timing wont put enough timing in to knock.

ForestGRN_Ghost · September 20th, 2009, 01:37 PM

Originally Posted by SWEET2KSTANG

stock timing wont put enough timing in to knock.

thats good info to know.
that had me scared as shit

SWEET2KSTANG · September 20th, 2009, 01:45 PM

stock timing peaks high 2x degree's if i remember right, thats not enough to cause detonation troubles.

Shaun03GT · September 20th, 2009, 03:20 PM

^^ I did not know that, thank you

02mustanggt · September 20th, 2009, 05:09 PM

actually mine ran pretty bad when i put my o/r x on. until i got mil eliminators it still didnt turn the engine light off but it runs normal and everything is fine

takiller · September 20th, 2009, 05:27 PM

yea man i ran mine like that for a little while before i got my xcal. you should be fine, you just have to stare at the CEL until you get the tune.

PowerShiftz02GT · September 20th, 2009, 07:37 PM

No need for a tuner unless you plan on getting tuned later on if you go Supercharged or just feel like getting the car tuned. If you don't plan on that, then Mills are the way to go.

Drick · September 20th, 2009, 10:35 PM

What is a mil eliminator and where and how do I install it?

SWEET2KSTANG · September 20th, 2009, 11:49 PM

americam muscle carries them for a decent price. they will go to the rear o2 sensors. you can either get direct plug ins or ones you splice together.

asiansensation78 · September 21st, 2009, 12:31 AM

I'd say get a handheld tuner, I heard people having troubles with MILs going bad after a while. Turn off the rear O2's with an SCT or DiabloSport and be done with them. If you're modding your car further you'll probably want to get a tuner in the near future anyway

PowerShiftz02GT · September 21st, 2009, 01:28 AM

yeah, my mills have lasted 3 years so far and i bought mine used too. but some people do have problems with them. but i think they are like 17 bucks at AM so they arent anywhere near as expensive as they use to be. but i agree with Asian, if you got the money and your going to mod your car further then go for the tuner.

SWEET2KSTANG · September 21st, 2009, 03:09 AM

Originally Posted by asiansensation78

I'd say get a handheld tuner, I heard people having troubles with MILs going bad after a while. Turn off the rear O2's with an SCT or DiabloSport and be done with them. If you're modding your car further you'll probably want to get a tuner in the near future anyway

new tuners or updated tuners dont have the option to turn off the o2 in the end user adjustablity anymore. a licensed tuner has to turn them off.

MineralGreyGT · September 21st, 2009, 09:24 AM

not only that depending on where you live, like MA, the new emissions comps can detect if the O2 sensors are shut off. It will come up as an error with the O2 sensors and you wont pass.

pierce3215 · September 24th, 2009, 09:48 AM

I just installed an o/r x with my slp and the CEL never came on. Loud as hell. I am planning on buying a tuner tho any reccomendations?

sganow · September 24th, 2009, 02:38 PM

The CEL probably won't come on right away. Mine didn't come on for a couple weeks. You can disconnect the battery for a little while and reconnect it again and the CEL will be out for about that long again. I made my own MIL eliminators using instructions off the internet. When I put my o/r midpipe on, you could not buy MIL eliminators. There was something going on where they could not sell them for awhile. I made mine using like $6 worth of parts from Radio Shack. They work perfectly.

ModMustang97GT · September 24th, 2009, 04:25 PM

Mil eliminators are just a transitor that give the correct impedance to make the computer think its getting a "Good air" reading from the sensor.

A Mid pipe won't affect your ride quality much. Its the front O2 sensors that matter. You have 4 on your car and the front 2 are the ones that decide how the car runs. The second 2 are just making sure the Cats are in place and filtering. They pretty much just want a lower reading than the front ones. Otherwise they don't do really anything. I flat had mine unhooked for a long time.

R3dFyre02 · September 24th, 2009, 04:42 PM

make your own MIL eliminators!!

September 20th, 2009, 01:15 PM	#1
Drick Big timin' in a small town 2004 FX4 F150, 86 GT Join Date: Apr 2007 Location: Gods country. Nordern Michigan eh Posts: 14,365 iTrader: 1 reviews	Exhaust question and tuner question.....dont laugh lol Ok well I know my way around fox bodys and can do whatever I need to them. But the computerized mod mustangs confuse the hell out of me with their tuners and stuff. Anyway im about to order a BBK off road X pipe for it. Question is once I put it on its gonna trigger a check engine light because of no cats, but will it run like shit because its compensating for the new air flow or whatever. Or would you guys suggest I get a tuner before I do anything to the air flow because I also plan on getting a new throttle body and plenum soon too. __________________ FX4 Crew Crew member #1 Don't take anything I say to heart, I don't try to come off as an asshole. It just happens

September 20th, 2009, 01:21 PM	#2
SWEET2KSTANG mm's nitrous mod 2000 mustang gt 11.79@115.83 (old set up) Join Date: Oct 2006 Location: N.W. AR Posts: 12,430 iTrader: 8 reviews	just get a set of MIL eliminators and you will be good. __________________ project warhorse under construction being built by MP2 Performance

September 20th, 2009, 01:23 PM	#3
Shaun03GT I Post Entirely Way Too Much 2003 Mustang GT 1/8 - 8.09 @ 91.39mph 1/4 - 12.35 @ 114.52mph Join Date: Sep 2009 Location: Weymouth, MA Posts: 12,071 iTrader: 11 reviews	It wont run like shit. The Air/Fuel will probally be off alittle. So listen for any pinging. If it pings you'll need a dyno tune because the 2Vs or GTs dont have knock sensors to retard the timing. Id run 93 gas in it to be safe. __________________ 2003 Mustang GT Vortech V1 Intercooled SAE Corrected - 380rwhp & 380rwtq @ 9psi Uncorrected - 401rwhp & 400rwtq @ 9psi Tuned By: Pete @ Performance Dyno Affordable Supercharger Build Guide Supercharger Info for Noobs

September 20th, 2009, 01:28 PM	#4
SWEET2KSTANG mm's nitrous mod 2000 mustang gt 11.79@115.83 (old set up) Join Date: Oct 2006 Location: N.W. AR Posts: 12,430 iTrader: 8 reviews	stock timing wont put enough timing in to knock. __________________ project warhorse under construction being built by MP2 Performance

September 20th, 2009, 01:45 PM	#6
SWEET2KSTANG mm's nitrous mod 2000 mustang gt 11.79@115.83 (old set up) Join Date: Oct 2006 Location: N.W. AR Posts: 12,430 iTrader: 8 reviews	stock timing peaks high 2x degree's if i remember right, thats not enough to cause detonation troubles. __________________ project warhorse under construction being built by MP2 Performance

September 20th, 2009, 03:20 PM	#7
Shaun03GT I Post Entirely Way Too Much 2003 Mustang GT 1/8 - 8.09 @ 91.39mph 1/4 - 12.35 @ 114.52mph Join Date: Sep 2009 Location: Weymouth, MA Posts: 12,071 iTrader: 11 reviews	^^ I did not know that, thank you __________________ 2003 Mustang GT Vortech V1 Intercooled SAE Corrected - 380rwhp & 380rwtq @ 9psi Uncorrected - 401rwhp & 400rwtq @ 9psi Tuned By: Pete @ Performance Dyno Affordable Supercharger Build Guide Supercharger Info for Noobs

September 20th, 2009, 05:09 PM	#8
02mustanggt Regular 2002 mustang gt Join Date: Feb 2009 Posts: 114 iTrader: 0 reviews	actually mine ran pretty bad when i put my o/r x on. until i got mil eliminators it still didnt turn the engine light off but it runs normal and everything is fine

September 20th, 2009, 05:27 PM	#9
takiller Hardcore Enthusiast 2003 Mustang GT 9.0 in the 8th Join Date: Aug 2007 Location: Texas Posts: 1,194 iTrader: 1 reviews	yea man i ran mine like that for a little while before i got my xcal. you should be fine, you just have to stare at the CEL until you get the tune. __________________ C&L CAI, 75 TB, Plenum, O/R H Pipe, SLP LM1's (Dumped), Eibach SS, Tokico S/S, Moser 31 Splines, Cobra Diff, FRPP 410's, XCal 3 93 Tune

September 20th, 2009, 07:37 PM	#10
PowerShiftz02GT MM Fanatic 2002 Mustang GT Join Date: Nov 2007 Location: Michigan Posts: 4,138 iTrader: 13 reviews	No need for a tuner unless you plan on getting tuned later on if you go Supercharged or just feel like getting the car tuned. If you don't plan on that, then Mills are the way to go. __________________

September 20th, 2009, 10:35 PM	#11
Drick Big timin' in a small town 2004 FX4 F150, 86 GT Join Date: Apr 2007 Location: Gods country. Nordern Michigan eh Posts: 14,365 iTrader: 1 reviews	What is a mil eliminator and where and how do I install it? __________________ FX4 Crew Crew member #1 Don't take anything I say to heart, I don't try to come off as an asshole. It just happens

September 20th, 2009, 11:49 PM	#12
SWEET2KSTANG mm's nitrous mod 2000 mustang gt 11.79@115.83 (old set up) Join Date: Oct 2006 Location: N.W. AR Posts: 12,430 iTrader: 8 reviews	americam muscle carries them for a decent price. they will go to the rear o2 sensors. you can either get direct plug ins or ones you splice together. __________________ project warhorse under construction being built by MP2 Performance

September 21st, 2009, 12:31 AM	#13
asiansensation78 Too Soon, Junior! 03 GT Vert 15:43.28@25.21 Too many naked bitches in the back Join Date: Jul 2009 Location: Columbus, OH Posts: 3,697 iTrader: 4 reviews	I'd say get a handheld tuner, I heard people having troubles with MILs going bad after a while. Turn off the rear O2's with an SCT or DiabloSport and be done with them. If you're modding your car further you'll probably want to get a tuner in the near future anyway __________________ 03 GT - Scrapes on lane markers - Modded 02 Cougar - Able to clear most speed bumps - Some mods 01 Explorer - Parking blocks NOM NOM NOM - Stock

September 21st, 2009, 01:28 AM	#14
PowerShiftz02GT MM Fanatic 2002 Mustang GT Join Date: Nov 2007 Location: Michigan Posts: 4,138 iTrader: 13 reviews	yeah, my mills have lasted 3 years so far and i bought mine used too. but some people do have problems with them. but i think they are like 17 bucks at AM so they arent anywhere near as expensive as they use to be. but i agree with Asian, if you got the money and your going to mod your car further then go for the tuner. __________________

September 21st, 2009, 09:24 AM	#16
MineralGreyGT Premium Member 2002 Mustang GT Never Ran er! Join Date: Jun 2007 Location: DartsMouth, MA Posts: 1,047 iTrader: 0 reviews	not only that depending on where you live, like MA, the new emissions comps can detect if the O2 sensors are shut off. It will come up as an error with the O2 sensors and you wont pass. __________________

September 24th, 2009, 09:48 AM	#17
pierce3215 Newbie Join Date: Sep 2009 Posts: 7 iTrader: 0 reviews	I just installed an o/r x with my slp and the CEL never came on. Loud as hell. I am planning on buying a tuner tho any reccomendations?

September 24th, 2009, 02:38 PM	#18
sganow Regular 2001 Mustang Bullitt Join Date: Jun 2009 Location: McKinney, TX Posts: 58 iTrader: 0 reviews	The CEL probably won't come on right away. Mine didn't come on for a couple weeks. You can disconnect the battery for a little while and reconnect it again and the CEL will be out for about that long again. I made my own MIL eliminators using instructions off the internet. When I put my o/r midpipe on, you could not buy MIL eliminators. There was something going on where they could not sell them for awhile. I made mine using like $6 worth of parts from Radio Shack. They work perfectly.

September 24th, 2009, 04:25 PM	#19
ModMustang97GT Hardcore Enthusiast 1997 Mustang GT Faster than an s4 Join Date: Aug 2007 Location: Seattle, WA Posts: 1,598 iTrader: 0 reviews	Mil eliminators are just a transitor that give the correct impedance to make the computer think its getting a "Good air" reading from the sensor. A Mid pipe won't affect your ride quality much. Its the front O2 sensors that matter. You have 4 on your car and the front 2 are the ones that decide how the car runs. The second 2 are just making sure the Cats are in place and filtering. They pretty much just want a lower reading than the front ones. Otherwise they don't do really anything. I flat had mine unhooked for a long time. __________________ Aztec Gold 97GT. MM CC Plates, Panhard Bar, SFC's & Tower Brace Eibach Sway Bars H&R Race Springs/Bilstein Shocks MAC CAI, LT's, Catted H and Pro-Dumps KB Boost-a-Spark 04' PI Motor Author of The Official Suspension Guide

September 24th, 2009, 04:42 PM	#20
R3dFyre02 Hardcore Enthusiast Join Date: Aug 2007 Posts: 1,180 iTrader: 2 reviews	make your own MIL eliminators!! __________________ 02GT - Blown motor 86LX 3.8TBI auto replacement daily driver How to retrofit HID's

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