Why?

[Michael from the U.K.]

The 05 and 06 trucks have a knock sensor and will retard the timing. You lose power.

The 04's do not have a knock sensor. You lose your engine if you do it to long.

WTF is a knock sensor,and can it be retro fitted to the 04's

 

[Cablefed]

Let me see if I can get this right...here is how I understand a knock sensor to work.

A knock sensor is a sensor that is placed on the actual block itself near one the piston bores via tapped threads on the block. The sensor then looks out for the frequency of the actual knocking itself. If a knock or series of knocks, depending on what triggers the ecu to take action, is detected the ECU sees that alarm and retards timing to keep the engine from detnating.

I have a factory knock sensor on my turbo Eclipse and use that sensor to help tune the engine when getting into risky areas with the tune to alert me so I can adjust whats needed to overcome the knock.

 

[VIPR PWR]

So you are saying that the PCM will be notified by the Knock sensor to retard the timing and prevent the engine from knocking even with a 93 octane tune running 87 octane fuel on a basically stock engine....How much advance can be added then before knock does occur?

 

[Silverback]

So you are saying that the PCM will be notified by the Knock sensor to retard the timing and prevent the engine from knocking even with a 93 octane tune running 87 octane fuel on a basically stock engine....How much advance can be added then before knock does occur?

One thing to be careful of. If you have flashed, or otherwise altered your PCM, the knock sensor may be disabled. Please note, I said may. It all depends on the software that was downloaded.

 

[TNVIPER]

just remember one thing...the engineers did not add the Knock sensors so you could run low octane gas....it is there to protect your engine...and it has it's limits...there is a reason your fuel gauge face has "PREMIUM FUEL ONLY"....

 

[Venom Power]

there is a reason your fuel gauge face has "PREMIUM FUEL ONLY"....

Umm:dontknow: YeeaaahhHH!

 

[mauiSRT/10]

just remember one thing...the engineers did not add the Knock sensors so you could run low octane gas....it is there to protect your engine...and it has it's limits...there is a reason your fuel gauge face has "PREMIUM FUEL ONLY"....

Thats right! Cheap out and you may pay the ulitmate price with a blown engine!!

The costs of owning a 10 have always been high, and basically it gets worse every week. Its the price you have to pay to enjoy our unique rides.

patrick

 

[Yellow venom]

*like an AA meeting..*

Hello.. My name is Anthony. I admit, sadly I was an octane cheater.. I would tell people that my #1900 required super unleaded fuel to brag on its thirst of 500+ horses. Yet when pulling up to the pump I would dump 89octane in #1900's tank for the sole purpose of saving money. At first it started with an occasional 89 here and there with significant amounts of 93 present. I'm ashamed to say that the 89's became more frequent and abundant... Then, as gas prices rose I would sometimes go to the local Exxon with my former grocery getter to fill up a 5 gallon tank of 87 octane.. Then, absconding with it back to my lair and pouring it in the tank so no one in public would see. In time I became braver and would drive up to the pump and select 87 when prompted without a second thought. This went on for the first 9,000 miles and all seemed right in the world.

Then it happened. She suddenly began to lose power and eventually it seemed she would barely move at all. One evening after an attempted test-drive around the neighborhood, I opened her hood and discovered that the right side exhaust manifold was glowing red. Of course like any price junkie I was in denial. “How could this happen at just 9k miles?â€￾ I asked. Finally after a full week of hoping the symptoms would just go away I was forced to go to a Dodge dealership for answers. It was Spring Dodge if my memory serves me correctly. They diagnosed the issue and said the front right side cat was stopped up. I denied any wrong doing as the service writer said they will be taking fuel samples. Thank goodness by then the tank had been emptied and filled with 93. No cause was found so they replaced the cat under warranty. Turns out this experience and my visit there was formative to say the least. I learned a valuable lesson. Will I use anything less than 93 again? NOPE! If it’s what the label calls for then that’s what it will get. My price pinching days are over.

The moral? Don’t be penny smart and dollar foolish.

LMAO!! Well written!:rock: :congrats: