Anyone move the IAT on a L99? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

YLWJKT · 06-01-2010, 07:35 AM

Anyone move the IAT on a L99?

If so what were your results?
We used to do them on the LS1 and it made a good difference.
I did a search and only found where the V6 guys are doing it.

BackinBlackSS/RS · 06-01-2010, 07:37 AM

Yeah, I've noticed that too. Not sure why it has not caught on for the V8, but Vector Motorsports sell a plug and play harness for this mod.

Silver Ice Man · 06-01-2010, 08:04 AM

Quote:

Originally Posted by Wandering Scot

Anyone move the IAT on a L99?

If so what were your results?
We used to do them on the LS1 and it made a good difference.
I did a search and only found where the V6 guys are doing it.

Dumb question but what is the "IAT"??

YLWJKT · 06-01-2010, 08:06 AM

Intake Air Temperature sensor.

BackinBlackSS/RS · 06-01-2010, 08:06 AM

Quote:

Originally Posted by Silver Ice Man

Dumb question but what is the "IAT"??

Intake air temperature. Here is a link to the mod on Vector's site with some info about the mod and what it does.

http://www.vectormotorsports.com/ind...mart&Itemid=28

YLWJKT · 06-01-2010, 11:40 AM

Quote:

Originally Posted by BackinBlackSS/RS

Intake air temperature. Here is a link to the mod on Vector's site with some info about the mod and what it does.

http://www.vectormotorsports.com/ind...mart&Itemid=28

Yep, called them and was told they do not have one yet for the new Camaro.
I can make my own for about $25.00, just curious if anyone had already done one and if they got similar gain to what we got on the LS1.

toehead93 · 06-02-2010, 09:05 PM

How do you make one? Where do you get an aftermarket sensor? I'm actually interested because the only thing I hate about my SS is how much dam timing the thing pulls when the IAT temps are up. Living here in south florida I can only get full power out of my car a handfull of weeks out of the year when temps are low. And like mentioned above for some unknown reason the L99 is affected HORRIBLY by IAT temps, worse than any car ever built...I guarentee it!

DSteck · 06-03-2010, 08:01 AM

That timing gets pulled for a reason... Just because you aren't knocking doesn't mean you're at max brake torque. I typically leave that IAT table alone unless I really have the opportunity to tweak it for MBT (which is rare). One problem with IAT breakout kits is that the new intake temperature sensor may not actually match the temperature calibration in the PCM. You can modify the reported temperature based on resistance in the PCM. I don't know how close the breakout IAT sensors match the factory calibration, but there's not really much purpose for doing them. If you want to actually do something productive, insulate the MAF housing. The IAT sensor is built into your MAF, and will actually cool down pretty quick when there is air moving over it.

If you want to help your heat soak situation, then in addition to insulating your MAF housing, find a way to get lots of fresh, outside air to your air filter. Just because you relocate your IAT sensor doesn't mean you're suddenly not pulling in 150º F engine bay air.

SonnyakaPig · 06-03-2010, 03:36 PM

Quote:

Originally Posted by DSteck

That timing gets pulled for a reason... Just people you aren't knocking doesn't mean you're at max brake torque.

What does this mean? It seems important, but I don't understand what you're trying to say.

DSteck · 06-03-2010, 03:47 PM

It's been a long day. /facepalm

I meant to say...

Just because it's not knocking does not mean you are at max brake torque... In other words, throwing a ton of timing at it (or just running full timing with really hot air) and seeing no knock does not mean you're making the best possible power.

Jekyll-N-Hyde · 06-03-2010, 04:19 PM

I got the ADM RACE COLD AIR INTAKE on my L99 it has a internal IAT sensor and WOW can you feel the Power especially when it climbs from 50 to 90 WOW.

It's ashamed Jenetty racing didnt test it against the others otherwise it would have been #1

internal IAT sensor inside the Cold air box = contstant cooler temps = more POWER

Video on how ADM's internal IAT works

http://www.admperformance.com/produc...=58&product=92

SonnyakaPig · 06-03-2010, 05:11 PM

Quote:

Originally Posted by DSteck

It's been a long day. /facepalm

I meant to say...

Just because it's not knocking does not mean you are at max brake torque... In other words, throwing a ton of timing at it (or just running full timing with really hot air) and seeing no knock does not mean you're making the best possible power.

Thank you. I get it now.

toehead93 · 06-04-2010, 08:55 AM

At what temperature does the ECM start pulling timing. I heard it was at 88*F (31*C), is this true?

DSteck · 06-04-2010, 10:00 AM

Quote:

Originally Posted by toehead93

At what temperature does the ECM start pulling timing. I heard it was at 88*F (31*C), is this true?

Yes, that is true. I can show you exactly once I have my laptop in front of me. It gets pretty aggressive around 120-130.

06-02-2010, 09:05 PM	#7
toehead93 Drives: 2014 2SS/1LE Join Date: Feb 2007 Location: wpb fl Posts: 3,136 View My Garage	How do you make one? Where do you get an aftermarket sensor? I'm actually interested because the only thing I hate about my SS is how much dam timing the thing pulls when the IAT temps are up. Living here in south florida I can only get full power out of my car a handfull of weeks out of the year when temps are low. And like mentioned above for some unknown reason the L99 is affected HORRIBLY by IAT temps, worse than any car ever built...I guarentee it! __________________ Used Racing Brake 2 Peice Rotors for sale: http://www.camaro5.com/forums/showthread.php?t=344754 Summit White 2014 2SS 1LE Recaros, NPP exhaust, Nav 2010 2SS A6 - sold.

06-03-2010, 08:01 AM	#8
DSteck Account Suspended Drives: 2006 Corvette Z06 Join Date: Feb 2010 Location: St. Louis, MO Posts: 587	That timing gets pulled for a reason... Just because you aren't knocking doesn't mean you're at max brake torque. I typically leave that IAT table alone unless I really have the opportunity to tweak it for MBT (which is rare). One problem with IAT breakout kits is that the new intake temperature sensor may not actually match the temperature calibration in the PCM. You can modify the reported temperature based on resistance in the PCM. I don't know how close the breakout IAT sensors match the factory calibration, but there's not really much purpose for doing them. If you want to actually do something productive, insulate the MAF housing. The IAT sensor is built into your MAF, and will actually cool down pretty quick when there is air moving over it. If you want to help your heat soak situation, then in addition to insulating your MAF housing, find a way to get lots of fresh, outside air to your air filter. Just because you relocate your IAT sensor doesn't mean you're suddenly not pulling in 150º F engine bay air. Last edited by DSteck; 06-03-2010 at 03:47 PM.

06-04-2010, 08:55 AM	#13
toehead93 Drives: 2014 2SS/1LE Join Date: Feb 2007 Location: wpb fl Posts: 3,136 View My Garage	At what temperature does the ECM start pulling timing. I heard it was at 88F (31C), is this true? __________________ Used Racing Brake 2 Peice Rotors for sale: http://www.camaro5.com/forums/showthread.php?t=344754 Summit White 2014 2SS 1LE Recaros, NPP exhaust, Nav 2010 2SS A6 - sold.

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06-01-2010, 07:35 AM	#1
YLWJKT Drives: 2017 ZL1 Join Date: May 2010 Location: Texas Posts: 327	Anyone move the IAT on a L99? Anyone move the IAT on a L99? If so what were your results? We used to do them on the LS1 and it made a good difference. I did a search and only found where the V6 guys are doing it.

06-01-2010, 07:37 AM	#2
BackinBlackSS/RS Go Blue!!!!! Drives: 2012 Cruze LT Join Date: Mar 2009 Location: Indiana Posts: 23,290	Yeah, I've noticed that too. Not sure why it has not caught on for the V8, but Vector Motorsports sell a plug and play harness for this mod.

06-01-2010, 08:06 AM	#4
YLWJKT Drives: 2017 ZL1 Join Date: May 2010 Location: Texas Posts: 327	Intake Air Temperature sensor.

06-03-2010, 03:47 PM	#10
DSteck Account Suspended Drives: 2006 Corvette Z06 Join Date: Feb 2010 Location: St. Louis, MO Posts: 587	It's been a long day. /facepalm I meant to say... Just because it's not knocking does not mean you are at max brake torque... In other words, throwing a ton of timing at it (or just running full timing with really hot air) and seeing no knock does not mean you're making the best possible power.