Called wait4me
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Called wait4me
So I called wait4me trying to see what he offered.....I asked him about tuning and what kind of gas I could use. He said that he would do a tune and that the computer would adapt to the gas I put in my truck. He said I could run 87 all the way up to 100 something and that the computer would sense this and adjust to the type of fuel I was using at the time. Is this true?
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To clarify, there is no octane sensor in the truck, just a high and low octane spark table. It will start at the high octane table, and if insufficient octane is used, it will knock. The PCM will pick up this knock and begin to adjust the timing down towards the low octane table. It will constantly attempt to raise the timing up towards the high octane table, but as knock is detected, it will be stopped.
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Originally Posted by dc_justin
To clarify, there is no octane sensor in the truck, just a high and low octane spark table. It will start at the high octane table, and if insufficient octane is used, it will knock. The PCM will pick up this knock and begin to adjust the timing down towards the low octane table. It will constantly attempt to raise the timing up towards the high octane table, but as knock is detected, it will be stopped.
so you were just slanged BS and justin just clarified it up
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Originally Posted by dc_justin
To clarify, there is no octane sensor in the truck, just a high and low octane spark table. It will start at the high octane table, and if insufficient octane is used, it will knock. The PCM will pick up this knock and begin to adjust the timing down towards the low octane table. It will constantly attempt to raise the timing up towards the high octane table, but as knock is detected, it will be stopped.
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Originally Posted by DanaliHD
as far as i remember, the stock high octane table has a much lower timing at wot than a custom tune would. so, no.
by the way listen to Justin. He won't steer ya wrong.
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Originally Posted by allenmehrer
but does the stock PCM adjust up to 100? whats special about the adjustability of the wait4me
no, the high octain timing table is set (doesnt matter the octain. Ususally set for 93) so if you put 100 in it, it will just be a waste of $$$ unless the timing was set too high to begin with causing knock.
Justin described it right.
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So what you guys are saying is I could run 87-93 but the performance would change? Like say if I was taking a trip and was just going to have the cruise on 80 and not really looking for hp....I could just run 87 then? Also would the mpg change between 87-93?