Odarabla's infinite BS thread for the foreskinned (AKA Smack Down)
11-03-2013, 12:06 PM
But for some reason, everytime a new motor comes out, they always seem to gain a million hp from a tune lol. Later one reality sets in. I want to see what a C7 gains from a tune on the dyno. From stock to dyno tune. Call it mythbusters lol.
(boosted applications are different, im talking NA)
11-03-2013, 12:13 PM
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I understand that. I was just testing out the famed theory behind 1 million hp in the tune of the 5.0. My car initially gained 6whp from a tune... making it more aggressive did nothing. Same with the ls cars. Ive never seen more then 10whp come out of a tune.
But for some reason, everytime a new motor comes out, they always seem to gain a million hp from a tune lol. Later one reality sets in. I want to see what a C7 gains from a tune on the dyno. From stock to dyno tune. Call it mythbusters lol.
(boosted applications are different, im talking NA)
But for some reason, everytime a new motor comes out, they always seem to gain a million hp from a tune lol. Later one reality sets in. I want to see what a C7 gains from a tune on the dyno. From stock to dyno tune. Call it mythbusters lol.
(boosted applications are different, im talking NA)
11-03-2013, 12:22 PM
however i havent seen a "performance" engine that is tuned for 87 octane in quite some time. My GTO and Boss are both factory recommended for 91 octane. So hypothetically speaking.. if a car is running 87 octane on the dyno. Say it makes 350whp. Then you add 93 octane and make 360whp. That tells me the car is factory tuned on a higher octane that will switch to low timing tables the second it sees any ping. In this particular case, this is what Ive seen for the passed 10 years. Factory cars making more power on 93 octane VS 87 octane. If it was the other way around, 93 octane would have 0 benefit over 87 with the stock tune. See my point?
Last edited by evangto87; 11-03-2013 at 12:30 PM.
11-03-2013, 12:30 PM
Well transmission is out... pretty painless on a lift... Last time I changed the clutch it was on jack stands. Night and day.
11-03-2013, 12:33 PM
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The problem is that the ignition and burn rate characteristics are different from 93 octane to 87 octane. If the motor is not accounting for that change then it will appear to make less power or no power on the higher octane fuel if the PCM is tuned for 87 octane. However if those tables are adjusted for the 93 octane burn characteristics you may find quite a bit more power than could be made on 87octane. How much though is up to the platforms. Many times though it's a multitude of things such as torque management that limit the output the platform could put out to retain better fuel economy, reliability or drivability.
11-03-2013, 12:40 PM
The problem is that the ignition and burn rate characteristics are different from 93 octane to 87 octane. If the motor is not accounting for that change then it will appear to make less power or no power on the higher octane fuel if the PCM is tuned for 87 octane. However if those tables are adjusted for the 93 octane burn characteristics you may find quite a bit more power than could be made on 87octane. How much though is up to the platforms. Many times though it's a multitude of things such as torque management that limit the output the platform could put out to retain better fuel economy, reliability or drivability.
11-03-2013, 12:42 PM
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True. However, on a simpler level, from the dozens of different stock cars Ive seen dynoed and then be tuned....10whp is a rough realistic expectation. So far the C7 is gaining around 30whp from a tune only. Id like to see that in person. Just like 5.0s pick up 25whp from stock to the worlds greatest tune.... yea Ive never seen more then 15. The boss picks up even less since there tunes are bit less forgiving in stock form.
11-03-2013, 12:50 PM
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Absolutely love the GS now for the fact that I can get an LS3, auto transmission, targa top (big for me - I miss popping the T-tops off of my TA on nice days and going out for a cruise), the looks I want, all for a pretty reasonable price. The stock wheels on some colors need to changed IMO.
Yes, one can get an 08 Z51 for a whole lot cheaper and add the widebody later and other goodies, but the 10+ GS's are still a good performance value for the money in the used market.
Update me, I'm a little late to this party
11-03-2013, 12:56 PM
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True. However, on a simpler level, from the dozens of different stock cars Ive seen dynoed and then be tuned....10whp is a rough realistic expectation. So far the C7 is gaining around 30whp from a tune only. Id like to see that in person. Just like 5.0s pick up 25whp from stock to the worlds greatest tune.... yea Ive never seen more then 15. The boss picks up even less since there tunes are bit less forgiving in stock form.
11-03-2013, 12:56 PM
It really depends on the other factors within the tune that your tuner takes care of. 17.5 I would say is conservative in general, but it depends on your particular car. You have to remember also, that mine is a 12' with onboard wideband o2 sensors etc. The computer is able to make a good bit more "on the fly" adjustments as needed compared to the earlier models. And that may be what is at play here with my tune and the advance. I'll post up some details on my tune when I do a datalog. maf #'s, advance, etc. Also, the later models have frequency based maf setup vs. voltage based for the earlier models.
11-03-2013, 01:32 PM
11-03-2013, 01:47 PM
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I just get a chubby everytime I see that Z06 in person. Friend of mine (old guy who never races) has an 08 Z06. Full exhaust, ported intake, ported TB, air intake, dyno tune, UD pulley... made 498whp on my dyno. Such an off the charts awesome car. I like the z51 ls3 vette. But to me it just doesnt have what the Z does. And i dont like the grand sports. I dont get it... essentially a grand sport is a z06 body on an ls3 car. But... it doesnt do it for me. I think the aura the z06 carries with it... is just what gets me. The same way the C5Z gets me over an FRC C5. Virtually the same car with more performance to the Z. But its just the package that gets me.
Yep, meh. Lol
11-03-2013, 01:54 PM
Still the coolest 4th gen ever! I dont care that it was at ATCO, or whatever... it is hands down my favorite 4th gen since it made these passes. Its badassery is the sole reason I will always be die hard NA