Thread: Rich on hot day

share the wealth brotha!

p.s why the 300ohm?

maybe @JKTUNING could set this as the factory iat conversion for the startup tcd's, as long as its hooked up just like ours, with the 4.7k ohm resistors it should work for everyone, an its simple plus radio shack readily has these resistors

The data was just a mess, 10k rpm and values all over the place. I erased the internal logs again and seems to have sorted it.

Today is very warm, but iat temp is pretty much same as it is any other time, and he car is super rich again at light loads, don't know about full boost. I took some fuel out of the maps around where it's rich for now, and turned closed loop on to try control it, which it's doing but suspect it will be lean in the cold.

Will try recalibrate the sensor again tonight and see how it goes

I can certainly make it an option.

Send me your TCD with the conversion and how you have it wired and I will add it in as a preset.

Its in my tune, you have that

Its wired to the breakout using 4.7 ohm resistor an its gm but so far 3 cars an its dead on lol

Done. It will be in the next update .. just right click on the IAT table and you can use that as a pre-set if you would like.

your the man! as usual lol

Decided to check the internal logs tonight, couple of times ive started the car of late its had a lot of trouble establishing a stable idle, ive got 247 logs recorded, varying in length from 11 sec to .25 sec, and some listed as N/A.

Yesterday i managed to download a log that was useful, but these are less so.

Used lynchfourtwenty's IAT cal, and now when i boost temps go up from 30 to 45-50 degrees while boosting, before they used to be around 30 all the time.

Its cool out tonight, so will see how things go tomorrow if its hot again. Im wondering if the IAT correction table is one point of fuel on the map, or is it a factor?

And internal logs looked fine after the tuning run, although 4.5mb for the full 27min gives a lot of data lol.

Because the guide called for 5k. All in all, it does not matter, depending on the tolerance level of the resistor, generally 5%-10%. The 4.7k resistor I bought was actually around 4.5-4.6ish, which was greater than 10% from 5k so I opted to add a 300ohm which was around 280 or 290, cant remember. But, this put me within a 5%-10% window. But honestly, 300ohms does not make a difference. Your table runs mine perfectly. I have yet had to touch the IAT tables or the density tables. Definitely the go to map for the GM IAT.