IAC Delete???
IAC Delete??? I have no idea where to put this thread so I put it here. Mods, please move if needed.
I've been doing some searching and have found very little on the subject of deleting the IAC. I'm asking this because it seems like a lot of idle tuning issues for cars with big cams seem to revolve around the IAC circuit.
Don't some aftermarket TB's come without provisions for an IAC or am I missing something here?
Couldn't you just tune with the software and the idle screw or am I just way off base?
The reason why I'm asking is that I'm considering moving to a cable tb on my truck and want to make the switch as simple and clean as possible.
I've been doing some searching and have found very little on the subject of deleting the IAC. I'm asking this because it seems like a lot of idle tuning issues for cars with big cams seem to revolve around the IAC circuit.
Don't some aftermarket TB's come without provisions for an IAC or am I missing something here?
Couldn't you just tune with the software and the idle screw or am I just way off base?
The reason why I'm asking is that I'm considering moving to a cable tb on my truck and want to make the switch as simple and clean as possible.
If it isn't DBW you need the IAC
Anybody who can't get it to idle correctly with a big can, either need a better tuner or better tuning software.
You're not going to convert you DBW setup over to DBC very easily, depending on wht PCM you're running, its new enought that it doesn't even have IAC drivers in it
Anybody who can't get it to idle correctly with a big can, either need a better tuner or better tuning software.
You're not going to convert you DBW setup over to DBC very easily, depending on wht PCM you're running, its new enought that it doesn't even have IAC drivers in it
If it isn't DBW you need the IAC
Anybody who can't get it to idle correctly with a big can, either need a better tuner or better tuning software.
You're not going to convert you DBW setup over to DBC very easily, depending on wht PCM you're running, its new enought that it doesn't even have IAC drivers in it
Anybody who can't get it to idle correctly with a big can, either need a better tuner or better tuning software.
You're not going to convert you DBW setup over to DBC very easily, depending on wht PCM you're running, its new enought that it doesn't even have IAC drivers in it
Yea, but thats not the question I asked. I know the IAC can be tuned, I know some pcm's don't have the appropriate driver.
I was asking if the vehicle can be tuned without one.
I was asking if the vehicle can be tuned without one.
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Even carbed race cars have an idle control circuit of some sort.
I hear what you are saying but I don't see your logic with the statement "simple and clean as possible."
You will still have the cable actuated TB. LS1 Tech Stories
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Verdad Gallardo Sure it can be tuned without one, as long as idle speed isn't important to you and you don't care if it stalls at red lights. You can drive your vehicle without air in the tires also, but that doesn't make it a good idea.
7 Second Club
Joined: Jan 2007
Posts: 259
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From: Sydney
it works and works fine, ive done it plenty of times on cars that have after market throttle bodies..
you have to set the base idle by using a hole in the blade then the ignition timing takes care of the rest.. cold starts and air con are not a problem
you have to set the base idle by using a hole in the blade then the ignition timing takes care of the rest.. cold starts and air con are not a problem
11 Second Club
Joined: Oct 2006
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Yep. The spark will have to be a lot more refined but it should still be doable.
He doesn't have a race car here, at least not listed. You're not going to have a good idle, when its cold, or you'll have a very high idle when its hot.
7 Second Club
Joined: Jan 2007
Posts: 259
Likes: 0
From: Sydney
cold starts are still perfect and hot idle is still perfect..
you do understand that a change of 10deg timing at idle is generally all it takes to get a car with out a IAC to idle perfectly when cold and hot??
wow, lots of mixed opinions here.
I was looking around on yellow bullet at a thread that was titled something like post your turbo engine bay pics or whatever and noticed a lot of efi cars didn't seem to have an IAC. Actually most didn't seem to have one. Not sure what management system they are all using but it doesn't seem like that big of deal not to have one.
I was looking around on yellow bullet at a thread that was titled something like post your turbo engine bay pics or whatever and noticed a lot of efi cars didn't seem to have an IAC. Actually most didn't seem to have one. Not sure what management system they are all using but it doesn't seem like that big of deal not to have one.
wow, lots of mixed opinions here.
I was looking around on yellow bullet at a thread that was titled something like post your turbo engine bay pics or whatever and noticed a lot of efi cars didn't seem to have an IAC. Actually most didn't seem to have one. Not sure what management system they are all using but it doesn't seem like that big of deal not to have one.
I was looking around on yellow bullet at a thread that was titled something like post your turbo engine bay pics or whatever and noticed a lot of efi cars didn't seem to have an IAC. Actually most didn't seem to have one. Not sure what management system they are all using but it doesn't seem like that big of deal not to have one.
All I have to say about 10Sec Rx7's posts is, do you live in an area that has as small temp swings as he does in Austria? A 10 degree change in timing isn't going to stabilize your idle speed with outside temps like mine that vary from below zero in the winter and get upwards to 100 in the summer, with a cam radical enough to give an IAC fits, trying to stabilize the idle.
Since you have HP Tuners, just ask Bill, I'm sure they have a great tune in the repository, that will work great for you.
wow, lots of mixed opinions here.
I was looking around on yellow bullet at a thread that was titled something like post your turbo engine bay pics or whatever and noticed a lot of efi cars didn't seem to have an IAC. Actually most didn't seem to have one. Not sure what management system they are all using but it doesn't seem like that big of deal not to have one.
I was looking around on yellow bullet at a thread that was titled something like post your turbo engine bay pics or whatever and noticed a lot of efi cars didn't seem to have an IAC. Actually most didn't seem to have one. Not sure what management system they are all using but it doesn't seem like that big of deal not to have one.
Then why aren't you on Yellow Bullet asking all those guys about it, instead of disagreeing with the posters with experience and knowledge in this mater, that don't think its a good idea, which it isn't by the way.
All I have to say about 10Sec Rx7's posts is, do you live in an area that has as small temp swings as he does in Austria? A 10 degree change in timing isn't going to stabilize your idle speed with outside temps like mine that vary from below zero in the winter and get upwards to 100 in the summer, with a cam radical enough to give an IAC fits, trying to stabilize the idle.
Since you have HP Tuners, just ask Bill, I'm sure they have a great tune in the repository, that will work great for you.
All I have to say about 10Sec Rx7's posts is, do you live in an area that has as small temp swings as he does in Austria? A 10 degree change in timing isn't going to stabilize your idle speed with outside temps like mine that vary from below zero in the winter and get upwards to 100 in the summer, with a cam radical enough to give an IAC fits, trying to stabilize the idle.
Since you have HP Tuners, just ask Bill, I'm sure they have a great tune in the repository, that will work great for you.
FYI: http://www.yellowbullet.com/forum/sh...d.php?t=251592
Yea, I'm talking about the IAC
Then why aren't you on Yellow Bullet asking all those guys about it, instead of disagreeing with the posters with experience and knowledge in this mater, that don't think its a good idea, which it isn't by the way.
All I have to say about 10Sec Rx7's posts is, do you live in an area that has as small temp swings as he does in Austria? A 10 degree change in timing isn't going to stabilize your idle speed with outside temps like mine that vary from below zero in the winter and get upwards to 100 in the summer, with a cam radical enough to give an IAC fits, trying to stabilize the idle.
Since you have HP Tuners, just ask Bill, I'm sure they have a great tune in the repository, that will work great for you.
All I have to say about 10Sec Rx7's posts is, do you live in an area that has as small temp swings as he does in Austria? A 10 degree change in timing isn't going to stabilize your idle speed with outside temps like mine that vary from below zero in the winter and get upwards to 100 in the summer, with a cam radical enough to give an IAC fits, trying to stabilize the idle.
Since you have HP Tuners, just ask Bill, I'm sure they have a great tune in the repository, that will work great for you.