slp 160 thermostat

[nonnieselman]

without a tune, you'll stay in open loop, and lose power/gas mileage.


With a tune, there are a few benefits.

If your talkin about the truck in your signature the 07 NNBS and newer, it goes from open loop to closed loop at 102* ECT..

ON a 99-06 its at 131*ECT...

So thats not true.

I put a BB in my thermostat and i noticed no drop in gas mileage. ECTs stay around 170ish. Depends on Ambient Temp.

[oleshifty]

I've heard otherwise from MANY people with all sorts of gm's. My 97 monte would not come out of open loop for about 20 minutes unless it was super hot outside.

If you live in texas, prolly doesnt matter. But here in IL, especially in winter, no way it'd go to closed loop on most of my trips. I even noticed a lapse in time when I switched to the 34" radiator.

[RedHeartbeat]

Hell, mine is in closed loop in about 30 seconds.

[oleshifty]

I normally make it to work before my needle hits 1/2 way to 210.

[gordo]

if ur worried about the loss of power and gas mileage well then might as well go with n electric water pump... yea yea i kno there a BBBBBBB to deal with but hey its worth it

[GasGuzzler]

Neither of the temps above are correct when you consider where P0128 sets. I have OEM efans retrofitted and a 160 tstat and it took some BS to make the tune work without P0128...we'll see come winter if it worked.

[nonnieselman]

P0128 is set to NO on all the tunes i have on my laptop..

[bangbangskeetskeet]

Great people, excellent customer service and they have quite the following/reputation.

People only like him cuz he is the site owner not cuz of his tuning.
J/K. I have a Nelson tune and love it. Best money I have spent on my truck thus far.

[oleshifty]

if you don't want to spend the money on the stat, i've heard of guys drilling small holes (2 or 3) on perimeter of the stat. This still allows it to open fully at stock temp, but small amounts of coolant flow at all temps...and you get slightly better flow when stat IS open

A company started selling them for the gtp guys, not sure if it helps a lot...but I'm sure a little.

[randomhero]

If your talkin about the truck in your signature the 07 NNBS and newer, it goes from open loop to closed loop at 102* ECT..

ON a 99-06 its at 131*ECT...

So thats not true.

I put a BB in my thermostat and i noticed no drop in gas mileage. ECTs stay around 170ish. Depends on Ambient Temp.

So I was curious to test this today. I was watching my wideband and aeroforce scan gauge so I knew exactly at what point it would switch to closed loop.

Sure enough when the coolant temp got to 131* it went right into closed loop. I could tell because the A/F ratio went from about 13.5 to 14.5-14.7 at exactly that time.