Thinking about buying the zzp 180* t-stat. How will my PCM react if I install this? Do I need a custom PCM and/or have my PCM tuned to the 180* t-stat? Is the t-stat easy to install? Write-ups or tutorials?



Random question: My car shifts gears at around 2500 or 3000 rpms, is this normal?

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97 GTP

You don't need to reprogram anything with the PCM to run a different thermostat.

And yeah, the thermostat is very, very, very easy to install. It's just the two bolts on the thermostat housing, and thats it.



BTW: Your car shifts gears at any RPM when it's time, depending on how much throttle your giving it.

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2.8 Pulley, Intense IC, P&P Gen V, Machined Intake, Intense PCM, 65lb/hr Injectors, N* Throttle Body, 1 3/4" Headers, 3" Exhaust, Intense Shift Kit, 3.69:1 Gears, 4000 Stall, N20

Before you go and buy the t-stat, think about why you want to install this. If you don't know why, then do some research and find out the benefits and downsides to the mods.

Personally, I am running a stock 195° stat right now because I am most concerned with fuel mileage. I have found that a 180° stat in a daily driver will cause me lower fuel mileage. I do convert over to a 180° stat when at the track. But for everyday use, I keep a stock stat in it.

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1997 GTP - 196xxx miles, PEMs, 3" SS Exhaust w/ Borla Mufflers, 3.4", 180* stat(summer), FWI, 1.84 RR, PT, SLP hood, KYB GR2s, GMPP Handling Kit, etc...

yea about the 180 tstat i recently asked people on here what is soo good about it? Plus my GTP is a daily driver and it will lower your MPG and will not gain hardly an HP so its a waste of 10 bucks. take the 10 bucks and put it in your gas tank =]

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RIDES: 99 DARK BRONZEMIST METALLIC GTP SUPERCHARGED SEDAN. -MODS- CUSTOM FWI, CUSTOM GRILLES PERFORMANCE PLUGS, ENKEI stock RIMS, RAISED SPOILER, KENWOOD SOUND SYSTEM. RED CALIPERS AND ROTORS WELDED THURSH DUAL EXHAUST

What they all said.

besides, you can get one at NAPA for $6 and you don't have to pay them to ship it.

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GreenBastardPerformance
2000 GTP Coupe (the green bastard)
XP, Pacesetters, LS1 TB & MAF,MSD System, P&P LIM, P&P GenV w/ 3.2, 3.0, 2.8, Devil'sOwn Injected 100% Methanol,PowerTuned, TripleEdge Trans w/3.29's
12.97 @ 106mph

thanks reptile i believe it was you or senthicsheild that told me put the money in the tank =]

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RIDES: 99 DARK BRONZEMIST METALLIC GTP SUPERCHARGED SEDAN. -MODS- CUSTOM FWI, CUSTOM GRILLES PERFORMANCE PLUGS, ENKEI stock RIMS, RAISED SPOILER, KENWOOD SOUND SYSTEM. RED CALIPERS AND ROTORS WELDED THURSH DUAL EXHAUST

I have noticed a decrease in MPG with a 180 stat. I may switch back soon. Heck I may not even install the 3.4 pulley and stuff I ordered.

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1998 GTP , CAI box
Waiting for install: 3.4 pulley

Over 100 years of engine research has determined that ~195* is the ideal temperature for combustion. But my GP still runs cold with a 195*. Either that, or my temperature gauge ain't right...

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2004 Impala SS - ZZP PCM, 3.4" Pulley, K&N CAI, TOG Headers, SLP Cat-Back, 180* thermo, Autolite 605s, PRJ Performance wires, Alternator rewire, GMPP Handling kit
2000 Grand Prix GT, Commuter Car - K&N CAI, GMPP Handling kit, ZZP downpipe w/U-bend delete, ZZP Plog, Alternator rewire

How do you know its running cold? I used to think halfway on the Impala's gauge was 200, but according to my scanner 200 is a notch or so left of the half mark.

Point is, temperature gauges don't scale linearly. My trucks were like that (100 at the bottom, 210 middle, 260 at the highest), but I thought cars were different. Apparently not.

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2004 Impala LS - got some mods
NAIOA Moderator

I am quite curious as to how much actual fuel savings there is with the 195 as compared to the 180 Tstat. Numbers or estimated MPG's would be great

Thanks!

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James Shafer 2003 GP GTX St. Louis MO
Mods: 1.9 Modified Rockers, TOGs w/ SLP Cat, Brisk LSG Plugs, 180 Tstat, PRJ 10.4 Plug Wires, P/P Gen 3, Ported L67 TB, SLP Ram Air Hood/Airbox, 2.5" Catback, 3.5 Pulley, Gen 1 Spoiler, ZZP Poly mounts, RAT Dogbones, 18" TSW Mondellos