69lemansguy

iTrader: (12)

so last year i put my car on teh dyno and put down 311/325 with a lid and flowmaster catback. today i was able to dyno again, and the only thing thats changed is i put an LS6 intake and ported TB on the car. i put down 329/339. needless to say im extremely pleased with the result. does anyone else have any before and after numbers from there intake swaps???

Mumbles

iTrader: (5)

Those are some impressive gains. Hell yeah! I recently installed Lt's and a Catted Y-pipe and I am currently saving for the LS6 intake. Hope I gain that kind of power myself.

ABQ99TA

iTrader: (17)

Nice gain. I've seen the ls6 give 12rw so I can see it.

95 Z28

iTrader: (21)

Impressive gains! I'd say that's probably a considerable amount more than the norm.

Titanws6

iTrader: (35)

Nice gains, the LS6 intake is the best bang for the buck mod, along with the P&P TB, the throttle prob feels much more repsonsive now too.

SweetS10V8

iTrader: (4)

Dyno data is never good unless its on the same dyno and same day testing. I can pick up 20hp with ZERO changes, just a different day.

If its not on the same day, but on the same dyno it can tell you trends, but it cant be exact to the HP and TQ. I'm sure you gained nicely assuming you were on the same dyno.

If its on a different dyno, you cant believe anything at all...

Striker

iTrader: (1)

hwhich tv is recomended for a ls6 intake usually? wats the typical size of the bore that folks port their tb's? If i give my tb to someone, how much should they bore it to?

69lemansguy

iTrader: (12)

its the same dyno, but yea, a year apart. i see what your saying though, depending on temp, humidity, all those fun factors, the hp will vary. thanks for bursting my bubble, lol.

01ssreda4

iTrader: (96)

isnt that what corrected numbers are for?? to help eliminate weather difference, and if it was the same dyno i say the results should be accurate.

69lemansguy

iTrader: (12)

sorry to sound like a noob, but i dont know a lot about dynos, what is corrected numbers?

SweetS10V8

iTrader: (4)

Thats what they attempt to do, but they are not 100% accurate. Ive literally had a 20hp difference on the exact same setup, just 6 months apart.

One was on a 80*F day with 70% humidity and the other was on a 70*F day with 38% humidity. The entire curve was screwed up, the curves were parallel to each other, one just 20 higher.

Humidity is what correction factors have a hard time with. If you keep the humidity relativity the same, the correction factor is more accurate. If you change the humidity greatly the correction factor doesn't figure in the way it changes the way the initial spark is affected.

Plus you have to factor in how its been since the dyno was calibrated.

I prefer A-B-A testing, (Baseline parts, new parts, Baseline parts) This way you can see how much testing may have screwed within the same day. A storm front can come through on a day of testing and ruin the entire day and give you a lot of bad data if you dont have a controlled air supply for the engine.

Its like any testing, there needs to be a control and a test. I'm sure everyone remembers this from science class in school.

SweetS10V8

iTrader: (4)

Its an attempt to try to get the dyno to output the same power number reguardless of if your testing it in Denver or Death Valley.

What correction factor was used in your dyno pulls? SAE or STP (aka STD)?

I am a teller of truths , it just happens that I look into numbers more than others who stickly take them at face value.
Take it as something new learned.

I try to learn something new everyday, but try to limit myself to one new thing per day! Haha.

Sluggish

iTrader: (10)

The power you made is legit, the two mods you did have been proven to work time and time again. Yes the dyno can read different, but who is to say it didn't low ball you. Just go to the track and see what you mph increase is. That will prove a power increase.


Edit: I forgot to add, ditch the flowmaster.

SweetS10V8

iTrader: (4)

Like I said earlier....I agree, the parts you have will give you gains, but you really cant say "X" hp and "X" TQ. Sluggish is also correct, the track is where you tell the real story. Dynos are for tuning and showing differences(same day-ish), not a show of manhood...

69lemansguy

iTrader: (12)

fair enough. Im going to the track this weekend, so ill have new numbers posted this sunday. as for ditching the flow masters, i like them because they are quiet. cops here in northern VA are D**** about exhaust. im going to put a cut out on it later this year for when i go to the track.

Sluggish

iTrader: (10)

A Hooker cat-back is also very quiet and flows even better. That's what I have and the you can't not hear the car cruising down the road.

GODUCKS

what i gained from a ls6 manifold


https://ls1tech.com/forums/generatio...e-h-c-car.html

Kingc8r

iTrader: (21)

Nice gains, I didn't see gains like that. Before my LS6 I made 328hp, after I made 332hp. Dynos were done on similar weather days as well...

69lemansguy

iTrader: (12)

the flowmaster was on the car when i bought it. ill have to go around youtube and ls1 sounds to see how hooker compares. if i can find one used, that may be what i do. thanks!

Frost

iTrader: (45)

I usually see about 8-15rwhp from an LS6 intake on the dynojet I tune on.