Tuning

[Chevy366]

How do you know if tuning is doing any good ? If you Dyno at one place , AND THE GUY STATES HIS DYNO IS 20 to 30 % OFF , LOWER , you go somewhere else and it shows a small amount of gain , how do you know that the gain you are seeing is true gain or just difference in Dynos ?
I know from tuning that a stock motor will do so much and that is it , period unless you put something in or on it to boost the engine , like Cam , Blower , NO2 .
Just like adding stripes gains you 5 hp , NOT . Tuning for exhaust , with or with out cats might get you 2 hp , maybe .
What tuners tune for is the difference in VE (air) , Fuel , Spark when something is added , slight differences really don't effect the tune any or very little , unless something major (Cam , Boost , NO2) is added to effect the engines VE (air) , Fuel , Spark mixture .
A stock motor is a stock motor , can't make it do more than it is suppose to without adding something , so if someone says they got 25 horse gain from a stock motor without adding something into (Cam) or onto (Blower , NO2) the engine they might be stretching the truth a little .

WORD !

[bud8fan]

always use the same dyno...find you 1 you like and stay with it every time you want to go back and see how your new mods or changes are doing for you....

[COWL327]

Allen did a test on a 6.0 last year and gained 45 hp and 65 torque with a tune...lots of timing!I think it was the motor he had for sale.The dyno pulls we did at Extreme were in 2nd gear as well

[COWL327]

I think the cam helped me a little bit....maybe....maybe not

[twobit]

<div class='quotetop'>QUOTE(COWL327 &#064; Mar 26 2007, 05&#58;10 PM) [snapback]87357[/snapback]</div>

I think the cam helped me a little bit....maybe....maybe not
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[COWL327]

[jethro_3]

And the point is.......

Remind me what the point is????

[Chevy366]

So what I see is that with 93 octane and some tuning , 40 to 50 hp gain so I could get 300 to 310 rwhp , seeing it dynos at 260 rwhp , no cam needed , "Sweet" to coin a phrase .