jimmyb496

If you switch to a Mafless tune, you need to install a new IAT only sensor and seperate it from the MAF sensor.

I'm looking for some ideas on how to locate/mount the IAT sensor.

My first thought was to drill a hole in the tube from the IC to the Throttle body and press the IAT into a rubber grommet. I'm concerned if it will just blow out under the pressure of boost. Estimate max boost level at 18psi.

5 Liter Eater

I think that will work fine. The only time I've seen them pop out is when they are pressed into the rubber/silicone coupler. When using an older 3rd gen IAT sensor you will need to re-do the IAT table to make the old sensor read correct temps.

jimmyb496

Thanks for the response.

Funny you mentioned the calibration of the IAT sensor. Man, I spent a good hour looking through all the tables in HP Tuners and I just couldn't find an IAT sensor calibration table or a place to enter Hi/Low calibration specs.

I bought the sensor from a buddy w/ a GTO. The sensor is from an IAT relocation kit that I guess is a pretty popular mod for LS2 Goats. So that gave me the sensor I needed. I guess I was hoping that the sensor would have the same calibration as my stock MAF based IAT had.

Where is the IAT table that you are referring to? Newer version of HPT maybe?

5 Liter Eater

Engine Diag/Airflow/IAT Sensor Cal. You'll need a recent 2.23 beta to see it probably. The older tables are different so I would just shift the IAT table up or down until the temp matches ambient with key on engine off and then do some verification at lower and higher temps.

jimmyb496

I agree, I'll need to update HPT to the newer version you mentioned.

Thanks again!

Unreal

I used a screw in IAT and welded in a bung. No worries about blowing out then.

jimmyb496

Happen to have the PN of the screw in IAT? I'd like to check in to that option.

Thanks!

Unreal

Local shop got it for me. I think it is for a 2000 corvette or something. You can find them online easy enough, just GM screw in IAT.

jimmyb496

Great advice. LS1 Tech had listed a Borg Warner PN# WT382. I also found Summit Racing had a slew of options, FAST, AEM, etc.

I think I like the more open element Borg Warner piece. The sensor (push in) that I have is supposed to be 10x faster sensing than stock. I don't know how this Borg Warner or others are in relation. I'll give it a shot though.

jimmyb496

Thanks for your thoughts Bill and Unreal. I ended just welding in a 3/8NPT bung about 8" in front of the TB. It always helpful to hear what has worked for others. Ultimately I just decided to do this, one less potential issue in a sea of little bugs to work out.

madmax4499

i used one from a 91 gmc syclone, worked perfect. screw in. any auto parts store will have it.

jimmyb496

I bought one from a local parts store for $40. I got hosed, it looks identical to one from Summit for $10. I think Summit has the FAST or ACCEL name on it. Theirs looked identical to the parts store one I ended up with. Good to know the 91 Syclone sensor is an option.

I'm sure you probably got it from a decent (non-rapist) parts store like I did. I scratched this store off my doing biz with list.

DSteck

GM part number 12614717

It's a screw in. Drill a hole in the manifold snout right behind the throttle body. Then, take the calibration data straight from the IAT2 sensor of a ZR1 or CTS-V file. Be sure to change the axis labels to match the ZR1/CTS-V.

This route involves no guessing, and no trial/error on calibrating the IAT sensor.

jimmyb496

Nice job Dave. Good info for the next guy. It sure is nice GM made the ZR1 so we can scam all the parts off it!

madmax4499

good info, much better option

DSteck

Anybody choosing to take this route that had a 2005-2008 Corvette, I'll even set up the IAT if you send me your HP Tuners file. Don't have any other unlimited C6s yet.

z0quick

I am needing to do this on my C5. Is this the right part or is there a more proper part that does not require me re-scaling the tables?

DSteck

It should be PnP.

vrybad

DSteck, you're a wealth of info!

NemeSS

OuyExcellent info