I am new to this forum and have little to no experiance with FI so if anyone has some info I would really appreciate it. Is there issues when running FI with or without intercooling in well below zero temperatures (Northern Canada)? I am thinking of Radix or Whipple but at this point am open to any ideas. I am also using it strickly for towing improvements so wild HP gains is not needed, but reliability and fuel consumption are of top importance. 2004 GMC 2500 HD 4wd, 6.0L auto. Thank again for anyones help.

 

Absolutely no issues with FI in colder climates. If you go with a system that is water/air intercooled, I would highly suggest makeing sure you use a 50/50 anitfreeze/distilled water mixture in the intercooler system.

 

The only issue I have in cold weather is that it runs like a differant truck, more precisely like a raped APE!!!!!! My Radix loves cold weather
Mark

 

How do you find your fuel milage on your truck and what is it on? Is it more for pleasure or for towing purposes? Thanks

 

Fuel mileage is even worse in the cold, at least from what I've seen.
If you keep your foot out of it its no worse than your stock engine in my case.
14-19mpg here from winter to summer.

 

I do have to admit my fuel mileage isn't the greatest. With the stock Radix I got 16 mpg highway remember I have an 04 sierra denali very heavy vehicle, but I kept modding my truck and now I get a couple mpg less. I will not do the thing I want in regards to modding or driving just because of gas prices. If I need to work some over time to pay for gas so be it.
Mark

 

Pretty much everyone gets worse milage when its cold out. Its a really big deal for us Prius guys too since it takes longer for our engines to heat up lol.

If you dont commute far its even worse since it takes about 10-15min for a vehicle to warm up enough to be at max efficiency.

 

I know here in the warm months (about 9 months ) they put an additive in the fuel. I've always seen a mileage increase when its warmer due to this as well. I think the main reason though is that when its colder the air is more dense. Therefore you have the ability to burn more fuel since there is more oxygen in the air. Also in order to achieve stoich while cruising, it'll have to add more fuel.

 

gimme cold air over HOT air anyday.

 

No kidding, I can't wait to see what my IAT's are going to be now that the turbo is on. I needs me an IC in the worst way!