Fiav blockoff or bypass

[Aproductions]

So I researched the two but can't find out which is better to have, I mostly saw threads on 1gs and I don't know if it is any different cause I have a 2g.

The bypass lets you keep the isc and the blockoff doesn't.

which do most people go with?

What are the good and bad of both.

Thanks.

 

[El Cuervo]

Well if you are keeping your accesories or anything that causes your rpms to slighly change during idle, then you should keep your isc/iac. The bypass plate only blocks the fiav but not the isc or iac whatever you want to call it. The block off plate blocks both of them.

 

[95blackGsTurbo]

Unless you are having problems with idle I wouldn't worry about it. You need to look a little more closely.
http://www.dsmtuners.com/forums/articles-intake-exhaust/320951-fiav-adjustment-disable.html

 

[snowborder714]

I'd recommend keeping the ISC if possible, as it does a good job if it's a working unit (if not, replace it).

The only time I'd remove it would probably be for a full out drag car.

 

[toofast82]

I'd recommend keeping the ISC if possible, as it does a good job if it's a working unit (if not, replace it).

The only time I'd remove it would probably be for a full out drag car.

agreed

 

[Aproductions]

sweet so i should go with the bypass?

 

[snowborder714]

I would recommend it.

 

[Aproductions]

thanks guys, bypass it is, ill give the isc if i still have problems.

 

[1sttimedsmr]

Sorry to be a hassle, but What does fiav, isc, and iac stand for?

 

[snowborder714]

FIAV - Fast Idle Air Valve
ISC - Idle Speed Controller
IAC - Idle Air Controller

ISC and IAC are used interchangeably. And the ISC bolts into the FIAV.

 

[1sttimedsmr]

I don't mean to steal the tread , but what are the benefits from doing this mod? When I hear mods, I am all over it. I might just get it done on my ride.

 

[snowborder714]

You keep hot coolant from flowing through the bottom of the throttle body so in theory it should help reduce the temperature of the air entering the intake manifold.

 

[1sttimedsmr]

Impressive , so little could do so much. I got some scrap aluminum laying around, tomorrow I'm going to star making a plate to bypass/block the fiav. let's see how that works for me.

 

[Aproductions]

If I just do the bypass, I still get rid of the lines like if I did the blockoff?

 

[mindset]

FIAV - Fast Idle Air Valve
ISC - Idle Speed Controller
IAC - Idle Air Controller

ISC and IAC are used interchangeably. And the ISC bolts into the FIAV.

In other words, bullshit that messes with our old ass cars.

 

[snowborder714]

If I just do the bypass, I still get rid of the lines like if I did the blockoff?

Yep, either one will not need the coolant lines anymore.