IAT sensor
Thread Starter
Pro
Joined: Jul 2004
Posts: 554
Likes: 0
IAT sensor
iat sensor
has anybody tried 1 of the iat mods? its a resistor that goes in the plug, if there is 1, that fools the computer to think there is cold air all the time. i was going to put 1 on my 944 / LT1 i had but sold the car and now im into this c5. the 944 was awfully fast and would do circles around a stock c5, if your down towards westminister in so cal watch for a stone gray 944 and give him a try. thats porsches color for pewter. but if you look on the LT1/LT4 boards there is a iat sensor mod. anyone?
has anybody tried 1 of the iat mods? its a resistor that goes in the plug, if there is 1, that fools the computer to think there is cold air all the time. i was going to put 1 on my 944 / LT1 i had but sold the car and now im into this c5. the 944 was awfully fast and would do circles around a stock c5, if your down towards westminister in so cal watch for a stone gray 944 and give him a try. thats porsches color for pewter. but if you look on the LT1/LT4 boards there is a iat sensor mod. anyone?
Safety Car
Joined: May 2000
Posts: 4,811
Likes: 344
From: Albuquerque NM
Lemme give ya two answers, you pick: 1. It's a cheap mod, go ahead and try it. You'll probably get what you paid for, but it might work.
2. Don't do it, the PCM uses the IAT reading to set spark advance and A/F ratio, do you want it to set these critical items based on false data?Better to go ahead and get it tuned correctly with LS1-edit on a dyno. The PCM works pretty well if it is given good data, don't try and fool it. FWIW I ran a recalibibrated IAT on a stock-ish motor, it still varied with temp, just read a little lower than reality. Worked OK, gave a couple more degrees of tming, buty when I modded the motor I went back to stock IAT and tuned the PCM correctly.
2. Don't do it, the PCM uses the IAT reading to set spark advance and A/F ratio, do you want it to set these critical items based on false data?Better to go ahead and get it tuned correctly with LS1-edit on a dyno. The PCM works pretty well if it is given good data, don't try and fool it. FWIW I ran a recalibibrated IAT on a stock-ish motor, it still varied with temp, just read a little lower than reality. Worked OK, gave a couple more degrees of tming, buty when I modded the motor I went back to stock IAT and tuned the PCM correctly.
Drifting
Joined: Jun 2004
Posts: 1,627
Likes: 143
From: Goodyear Az
See the post by 6Speeder... "FWIW I ran a recalibibrated IAT on a stock-ish motor, it still varied with temp, just read a little lower than reality. Worked OK, gave a couple more degrees of tming"
Safety Car
Joined: Nov 2003
Posts: 4,979
Likes: 5
From: San Diego, CA "leaf" "tee" "e"
No offense, but it sounds like a dumb mod you'll regret. I descreened my MAF, and I regretted it. I'm sure it may have given me a little extra power, but it also gave me tip-in KR that I could not tune out with HP Tuners. I an unmodified MAF, and the tip-in KR went away. I'm never screwing with a sensor again!
944's handle extremely well, but a bit underpowered. Are you saying you have a LT1 in a 944?? That would take care of the power issue, but it'd kill the handling in a car that was arguably the best handling car ever.
944's handle extremely well, but a bit underpowered. Are you saying you have a LT1 in a 944?? That would take care of the power issue, but it'd kill the handling in a car that was arguably the best handling car ever.
Safety Car
Joined: Nov 2003
Posts: 4,979
Likes: 5
From: San Diego, CA "leaf" "tee" "e"
How hard is that conversion? What kind of 944 do you need? N/A or turbo motor, N/A or turbo suspension? One of my buddies had a 944, and it was pretty sweet, but when his tranny let go, he had to look pretty hard to find a replacement tranny. We ended up driving from Alabama to Arkansas to pick one up.
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