IAT too cold with meth?
Racer
Joined: Feb 2008
Posts: 326
Likes: 0
From: Norman OK
Most stock tunes do add timing but at extreme temps. I don't have my laptop here so just grabbed an image off google. Refering to the left side not the circled portion.
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Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,342
From: Gilbert AZ
There is another IAT table though that enables IAT and at least on my car it wasn't enabled down there. I kept trying to add timing down low with that chart but until I adjusted the table to enabled IAT adjustments at low temps nothing happened.
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,342
From: Gilbert AZ
That is a hard question to answer. Depends on the tune/etc. Too high for what? Car should run fine with intake temps well into the 200s if tune is good, then again they shouldn't get that high with meth.
Melting Slicks
Joined: Jul 2000
Posts: 2,726
Likes: 115
From: Phoenix AZ
I set the alarm for 150 for now.
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Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,342
From: Gilbert AZ
I looked too, and you need to enable it through the IAT multiplier too. It is all 0.0 at the low IATs so even if you add timing on the IAT adder table like shown above it won't do anything if the IAT multiplier at those temps is 0.
Thread Starter
Melting Slicks
Joined: Apr 2007
Posts: 2,987
Likes: 16
From: Phoenix
My IAT's are less than 40F by 4000rpm. In the mid 30's around 5000rpm and crept up to 43F at 6500rpm when I was doing pulls in 86F ambient temps. AFR is at 10.5-10.7 on the gasoline scale. 3rd gear is now useless at WOT as it vaporizes the tires around 5000rpm. I stayed in it for a bit until it got too sideways. I think I'm going to tune it on 91 octane and meth with 16oz of Torco. Then just back some timing out of it. Not being able to go wide open in third is just retarded. I'll do a drag radial only tune and a street tires tune.
68F +1 degree
59F +2 degrees
50F and below +3 degrees
Last edited by jon6.0; Nov 4, 2013 at 02:17 PM.