IAC delete?

acmillr · July 31st, 2007, 04:52 PM

Has anyone tried to delete the IAC on the 4.6 and use the TB set screw to control idle? If so, what all should be taken into consideration? Can the "memory" of the IAC be erased from the computer with a tune?

04GTAMPA · July 31st, 2007, 05:20 PM

Ok Dora. I just called the "shop owner" and he said that as far as he knows, it CAN NOT just be deleted. However, he said that there must be a "way" around it with the proper tune and a small adjustment. He told me he would take care of it when I bring him the car but he's never done it before or seen it done. I specified I was looking at the EBrock intake, so he knows what I'm talking about. His dyno is still not up yet, it will be by next week. He also recommended that the EGR don't be deleted or it will kill some power with the cams and affect fuel economy even more.

AnglicoGT98 · July 31st, 2007, 06:45 PM

I got rid of my EGR and nothing changed. It actually helped my car run a little smoother. I also heard it helps keep carbon build up down. Just make sure you use a tuner and shut of the sensors and close up all the vacuum lines and that hole in the engine.
For the IAC. Just try some gasket material and drill smaller holes and put that in between the IAC and the T-body. It would result in the same thing. Did that too and my RPMs drop nice and quick. It sounds pretty cool too. But I've never heard of anyone just getting rid of it....sounds weird.

zerofx150 · July 31st, 2007, 10:35 PM

my buddy did it on his 06 f150, runs fine but they also have a computer controlled TB

06RedfireGT · August 1st, 2007, 12:43 AM

what exactly would this do?

gills99stang · August 1st, 2007, 01:48 AM

There are "IAC restrictors" that you can buy on Ebay, me and a few other guys on this site have bought them to get our rpms to "drop down quicker."

Like AnglicoGT98 said, all that it is supplied is a cut-out piece of Mr. Gasket with small holes drilled in it. It was only about $12 so I got it, but I didn't notice any difference. I even took before and after video of my tach revving and didn't see the difference when reviewing them on the computer.

acmillr · August 1st, 2007, 06:18 AM

You don't understand. I don't care about the hanging RPM's. I was just trying to get rid of the IAC so I wouldn't have to fabricate something for it to be bolted to on the new intake.

04GTAMPA · August 1st, 2007, 08:15 AM

With fabrication it should be ok. Everyone here is thinking restrictors to keep hot air from coming back into the intake via EGR and IAC restrictor to choke the engine and keep the idle down.

What we are looking for is a way to do without it to make the Ebrock intake work without the IAC. It looks like something will need a custom fab on that unit. I'll find out more.

AnglicoGT98 · August 1st, 2007, 11:45 AM

gills99stang....You might want to play with te size of the holes from that IAC restrictor. The smaller hole will make the drop faster but you dont want to go too extreme. The hole on yours was probably just too big.

Now I see why you want to get rid of the IAC. I just wasn't understanding the new manifold part. You can't shut off the IAC with a handheld tuner?? I thought you could delete the IAC and the EGR.

04GTAMPA · August 1st, 2007, 12:33 PM

I've been under the impression that with a tune you could do it...

acmillr · August 1st, 2007, 12:44 PM

Originally Posted by 04GTAMPA

I've been under the impression that with a tune you could do it...

BS!

04GTAMPA · August 1st, 2007, 12:45 PM

:stupid

B0B · August 1st, 2007, 02:37 PM

just take the bitch off and hide the wires! lol. i tried deleting mine but it tripped the cel. i'm sure theres a way though. if you have to just keep it plugged into the wire but dont hook connect it to the intake. you can probably stash it in the fenderwell if you have to. i mean thats a half assed way to do it but it might be better than fabbing your new intake.

July 31st, 2007, 04:52 PM	#1
acmillr MM Fanatic 2003 GT Street Fast 16.9@76MPH Join Date: Jul 2006 Location: Tampa, FL Posts: 3,876	IAC delete? Has anyone tried to delete the IAC on the 4.6 and use the TB set screw to control idle? If so, what all should be taken into consideration? Can the "memory" of the IAC be erased from the computer with a tune?

July 31st, 2007, 05:20 PM	#2
04GTAMPA Hardcore Enthusiast 1999 Mustang GT Join Date: Apr 2007 Location: Riverview, FL Posts: 2,260	Ok Dora. I just called the "shop owner" and he said that as far as he knows, it CAN NOT just be deleted. However, he said that there must be a "way" around it with the proper tune and a small adjustment. He told me he would take care of it when I bring him the car but he's never done it before or seen it done. I specified I was looking at the EBrock intake, so he knows what I'm talking about. His dyno is still not up yet, it will be by next week. He also recommended that the EGR don't be deleted or it will kill some power with the cams and affect fuel economy even more. __________________

July 31st, 2007, 06:45 PM	#3
AnglicoGT98 Enthusiast Join Date: Feb 2007 Location: Coral Springs, FL Posts: 633	I got rid of my EGR and nothing changed. It actually helped my car run a little smoother. I also heard it helps keep carbon build up down. Just make sure you use a tuner and shut of the sensors and close up all the vacuum lines and that hole in the engine. For the IAC. Just try some gasket material and drill smaller holes and put that in between the IAC and the T-body. It would result in the same thing. Did that too and my RPMs drop nice and quick. It sounds pretty cool too. But I've never heard of anyone just getting rid of it....sounds weird. __________________ Parting out 2003 SVT Cobra Air/Fuel http://www.moddedmustangs.com/forums...003-cobra.html Engine http://www.moddedmustangs.com/forums...003-cobra.html

July 31st, 2007, 10:35 PM	#4
zerofx150 Regular 2003 GT 13.6 @ 101 Join Date: Feb 2007 Location: Ada OK Posts: 323	my buddy did it on his 06 f150, runs fine but they also have a computer controlled TB __________________ 03 GT 5sp, K&N FIPK, MAC LT ceramic coated headers, BBK o/r hipe ceramic coated, Steeda Tri-ax, 4.10, SCT X-cal2, NX plate Kit, Eibach Drag-Launch Springs, tubular upper and lower rear control arms

August 1st, 2007, 01:48 AM	#6
gills99stang Hardcore Enthusiast 1999 Mustang GT 13.4 @ 100 Join Date: Sep 2006 Location: Virginia Beach, Virginia Posts: 2,611	There are "IAC restrictors" that you can buy on Ebay, me and a few other guys on this site have bought them to get our rpms to "drop down quicker." Like AnglicoGT98 said, all that it is supplied is a cut-out piece of Mr. Gasket with small holes drilled in it. It was only about $12 so I got it, but I didn't notice any difference. I even took before and after video of my tach revving and didn't see the difference when reviewing them on the computer. __________________ Brendan '99 Mustang GT [318 rwhp N/A] 2004 F-150 XLT SuperCab (FOR SALE) For sale: piano, boost gauge, F150 muffler, vending machines, windshield wiper assembly, record/8 track player, z28 tail/corner lights, head unit for Nissan Frontier

August 1st, 2007, 06:18 AM	#7
acmillr MM Fanatic 2003 GT Street Fast 16.9@76MPH Join Date: Jul 2006 Location: Tampa, FL Posts: 3,876	You don't understand. I don't care about the hanging RPM's. I was just trying to get rid of the IAC so I wouldn't have to fabricate something for it to be bolted to on the new intake.

August 1st, 2007, 08:15 AM	#8
04GTAMPA Hardcore Enthusiast 1999 Mustang GT Join Date: Apr 2007 Location: Riverview, FL Posts: 2,260	With fabrication it should be ok. Everyone here is thinking restrictors to keep hot air from coming back into the intake via EGR and IAC restrictor to choke the engine and keep the idle down. What we are looking for is a way to do without it to make the Ebrock intake work without the IAC. It looks like something will need a custom fab on that unit. I'll find out more. __________________

August 1st, 2007, 11:45 AM	#9
AnglicoGT98 Enthusiast Join Date: Feb 2007 Location: Coral Springs, FL Posts: 633	gills99stang....You might want to play with te size of the holes from that IAC restrictor. The smaller hole will make the drop faster but you dont want to go too extreme. The hole on yours was probably just too big. Now I see why you want to get rid of the IAC. I just wasn't understanding the new manifold part. You can't shut off the IAC with a handheld tuner?? I thought you could delete the IAC and the EGR. __________________ Parting out 2003 SVT Cobra Air/Fuel http://www.moddedmustangs.com/forums...003-cobra.html Engine http://www.moddedmustangs.com/forums...003-cobra.html

August 1st, 2007, 12:33 PM	#10
04GTAMPA Hardcore Enthusiast 1999 Mustang GT Join Date: Apr 2007 Location: Riverview, FL Posts: 2,260	I've been under the impression that with a tune you could do it... __________________

August 1st, 2007, 12:45 PM	#12
04GTAMPA Hardcore Enthusiast 1999 Mustang GT Join Date: Apr 2007 Location: Riverview, FL Posts: 2,260	:stupid __________________

August 1st, 2007, 02:37 PM	#13
B0B Hardcore Enthusiast 2001 Mustang GT the speed of smell Join Date: Dec 2006 Location: Milton, WA Posts: 1,236	just take the bitch off and hide the wires! lol. i tried deleting mine but it tripped the cel. i'm sure theres a way though. if you have to just keep it plugged into the wire but dont hook connect it to the intake. you can probably stash it in the fenderwell if you have to. i mean thats a half assed way to do it but it might be better than fabbing your new intake. __________________ '01 GT P-1SC 383rwhp, 380rwtq moddedmustang's drunk story teller www.myspace.com/jeepwheelerbob

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