FYI:

A Quote of one paragraph from our web site under "How We Tune"
The Art and Science of Power Tuning

"The team of engineers and technicians at our R&D center in Memphis uses two computerized chassis dynamometers to develop the most powerful tuning programs possible. First they experimentally adjust the spark timing to obtain the highest torque and power readings at a given engine rpm. Then they adjust the air/fuel ratio to obtain the highest possible power and torque readings that an optimized air/fuel mixture can produce. After the spark timing and air/fuel ratio for that particular engine speed have been optimized, the rpm is increased to the next point and the entire procedure is repeated again. The process continues, point by point, up to the engine's maximum speed. This technique is called experimental, point-by-point curve fitting. There is no more effective way to power tune an engine."

For more details go to
http://www.hypertech.com/about-us-how-we-tune.aspx

Thanks,
GW

 

Ok, so I was half right when I said it was built into the tune and not advertised. Its advertised but it isnt an ajustable option. Gotchya.

Thanks.

On that note, I'm even more confused if I should put in a 180 or a 195... :S

 

also, I'm a thread pirate it seems. Sorry about that OP!

 

"also, I'm a thread pirate it seems. Sorry about that OP!"

No worries, there's a SWAT team on its way to your house as we speak.

"On that note, I'm even more confused if I should put in a 180 or a 195..."

If you're using a stock Hypertech tune, maybe that would depend on what t'stat they were running when they calculated that tune. Can you elaborate on that, Hypertech guy?

 

"No worries, there's a SWAT team on its way to your house as we speak."

I have combat first aid so I'll make sure you get your boys back in "usable" condition.

 

if you live in Canada or the northern states you will want the 195 just for the fact your heater core will be warmer in the winter. i don't belive that a 15 degree difference in tstat is going to give you that much more power, run with the stock ones and you won't have a problem

 

I put a 180* stat in when I did the plenum only for 2 reasons: 1) recommended for SCT, when I get one, 2) for the winter, with the plow it'll get a little warm goin down the road. Otherwise I'd have a 195*.

 

I'm an idiot. I could've sworn I put a 180 degree t-stat in when I did the plenum. I did replace the thermostat, I'm positive about that (wrote it down). I bought a 192 degree t-stat yesterday, took off the alternator, and proceeded to tear into putting in the new t-stat. I looked on the back of the t-stat that was in there and it had "195" stamped on it. I seem to recall the parts store did not have the 180 degree t-stat in stock at the time I replaced it (it's been over a year ago). Would've been nice if I'd recalled that earlier. Ah well, I guess now my engine will run 3 degrees cooler and I wasted a couple of hours working on the truck for nothing. But then again, I've worked on the truck for nothing before, so no big deal. And I got some interesting replies from my original post (sorry to waste your time on that BTW).

On a side note, the truck actually spark knocked a bit on the way to the parts store. First time I've heard it ping in a year. The weather has changed pretty drastically here, it's dropped about 20 degrees over night. That was the first time I had driven it since the weather change and it has not pinged since that initial drive. I assume maybe the cooler, denser air made the engine run a little bit lean until the computer had time to adjust to the cooler air. Is that a possibility? At any rate, it's not pinging now, I tried to make it ping and could not. Just curious.

 

I'll try to locate my old Huey for air support

Notes on 160 & 180 thermostats:

"To complete your performance package, Hypertech recommends the use of a low-temp thermostat to complement the performance tuning found in the Hypertech Power Tuning products. Available in both 160˚ and 180˚ range,the PowerStat low-temp thermostat improves performance in two ways: first by inducing less heat into the intake air and second by reducing the engine’s tendency to detonate."

GW

 

If I was running 14.7:1 at WOT, I would crap myself.