1vryfststang

Well guess I just did the IAC Mod and she is complete! I just took her down the road and wow talk about no more RPM hanging....SWEET! Oh and I have 40 series flows O/R X-Pipe and not cats.......She def drives and sounds a little different....same sound but comes in and out different what am I trying to say at different times and duration maybe thats better. Anyhow guys if you want to fix the RPM hang in our cars then this mod works wonderful. I have $1.76 in it haha. I also used the 3/16 drill bit and it idles perfect.....although like he stated it hisses some when just standing next to the car but I like it because I know why...lol Oh just one more thing what does IAC even stand for....sorry I don know!

1sloblckgt

IAC = Idle Air Control

I've done this mod also... Worked fine for me.

1vryfststang

Good...and thanks! I am happy with the mod!

99 GT vert

if you have an auto do not do this mod it will trigger a check engine light

1sloblckgt

Not a problem. I'm not sure where you live and what the temp is now, but just an FYI... On cold mornings, you might have a little trouble keeping the car running when you first crank it.

1vryfststang

Ok...I'm in Middle TN and the Temp IS HOTT Prob about 95degrees or so....the car idles perfect although just a min ago I kicked on the a/c and it droped alot then picked back up..........thanks for the information though! I hope it works fine when it gets colder in the winter...

ackuric

my cars an auto and i did this mod, didnt quite use as small of a hole as everyone recommends, i used a lil over a quarter inch hole, and i never received a check engine light. I did remove the mod though after a few months, I like the engine revving up to 1500 rpms and holding for a second at startup, especially after its been awhile since i driven, it gets the oil moving. It also sounds nicer imo, and restricting the hole will eventually build up all types of carbon and nastiness, after I removed my modified gasket with 3 months of use the hole was black and sooty, almost burnt up, my stock gasket thats 9 yrs old is like new.

99 GT vert

mine i had in was one off ebay for a dollar so it was the size they suggest and it said with the code that there was not enough air going into it

1sloblckgt

I'm right below you in alabama... its 95 here as well.

1vryfststang

lol summer looks like it is here in the south... I was liking the weather before it decided to jump and get hot hot!! lol