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Discussion Starter #1
I purchased a new Versa S car on 12/30/17. Repairing the cylinders failure was not affordable for a 2011 Sentra. OEM tires are stiff, but it may be this car is 200 lbs. light. Like to plug a 3/4" hole on the intake duct inlet. Bypassing coolant to the throttle body could increase 5 HP but, I wish 3 decibel less engine drone. Belated Happy New Year to All. A Good Night

Regards Redscarlett
 

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OEM tires are stiff, but it may be this car is 200 lbs. light.
Check the tires pressure. When I bought my Versa, the ride was kinda stiff. The tires pressure was just under 50 psi for all 4 tires. I do not know if it came this way from the factory, or a dealership overinflated it. Nissan recommends 32 psi, I like to keep it around 40 for better gas mileage and longer tire life. So I bled air to 38..40 psi, and the ride is less stiff.
 

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Discussion Starter #3
Thanks for the information SlickVersa. I'll check it Saturday morning. I'm rethinking not to alter the throttle body coolant. My bucket list was for the old Sentra, so the list is history. New Year, New Car.
Regards Redscarlett
 

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Sedan or hatchback? I ended up with the sedan s 2016 one and love the ride.

On my honda I had a valve to block coolant flow to the throttle body. People told me no and that is where the ECU gets the engine temp, but none of that was true. THAT engine just loved cool humid air and to be cool to give best performance. This Nissan one seems to like to be warmed up, but does suffer heat soak.

I even went as far as to insulate the intake runners on my honda to help perserve the outside air temp as far as I could to do the engine.
Then I used pipe insulation and zip ties to insulate it up to the air filter. Id like to do something similar to this car including valve for the water to the throttle so I can adjust flow. The idea is the warm water prevents it from freezing and jamming the throttle plates in freak events on humid cool mornings. Ive never experience that, but then again most cars I drive I do so at WOT so I wouldnt know. >:D
 

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Discussion Starter #5 (Edited)
I bought the Versa S sedan. I'm 35 miles east of Los Angeles. Haven't seen hard ice in 50 years. Running hot coolant through the throttle body just not logical. The software has been installed to compensate for it. And to break ice or your finger if ye dare. There are videos on how to properly clean your throttle body. I myself will use top-tier gasoline and Seafoam in my tank. I need all my fingers to drive stick. Hey VersaSlick, the tire pressure was set to 35 psi. I took a pound off and its good.
 

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+1 for the top tier high octane fuel. I find it gives you more balls when dropping the clutch between gear changes. No, you dont need a heated TB in your case. Its single digits here, so I might.
 

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Hey VersaSlick, the tire pressure was set to 35 psi. I took a pound off and its good.
Be careful not to make it too low, even though Nissan recommends 32 psi. It can trigger a warning light.

A few days ago the wife complained that in her car (2017 Versa S manual) the tire warning light was up on the dash. I checked all tires, they were all good, and the tire pressure was 32 psi. I pumped it up to 38...40, and the light went off (after a few minutes of driving).

I set it up at about 40 psi in the middle of the summer. The rule of sum is for every 10 degrees F, tire pressure will adjust by 1 psi. So being now about 0 degrees F outside, plus some slow loosing air, it got to the point of triggering warning light. Yes, 32 psi should not trigger the warning light. But do I want to take the car to the dealer about this? I guess not.
 

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I usually inflate mines to and keep them at 40 til the fall. Then I let them leak naturally. When its near 0 F outside a 40 psi tire at room temp will be close to 30 psi and trigger the tpms system til some heat gets made and the air expands. Nitrogen helps to keep the air stable inside the tire, but it will still vary with temp or extreme temps below 32f or 0c.
 
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