How much hp does this mod really add and is it safe they sell them on ebay all the time for cheap and they say they add 20 hp which i know isnt true but should i get it.

 

u mean IAT?

 

The ATI mod adds about 150hp and costs way more than $20

Anyway, the IAT mod I believe you are talking about is generally "not cool" on the LT1. All dyno tuners I've heard hate these with a passion and will rip them out in a second when dyno tuning a car.

They hate ported MAFs too but not for the same reasons... they just don't have good known programs for ported MAF guys but in the case of the IAT mod they find it either doesn't do anything or hurts hp. I had a link at one time to a before and after dyno but I don't know where it's at right now.

 

what exactly is it?

 

its a 2 cent resistor that tells the computer a false reading for your iat (idle air temp (?)). If you really wanted this, you could probably find the resistor at radioshack.

i have one, but it stays in the glovebox, previous owner bought it, i removed it.

-james

 

Thats what i was thinking when i read the post title.. iwas like thats what he gotta be talking about

 

Yeah sorry about that I did mean IAT but what is the ati mod you are talking about then im not going to get the IAT it didnt look to good anyway.

 

ATI mod would be the ATI Procharger mod. It's about $3000 and gives around 150hp like Brent said.