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numbers obsessed, help me hit 400 ... ?

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Old Sep 11, 2007 | 08:29 PM
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Default numbers obsessed, help me hit 400 ... ?

Hello,
I'm scheduled to have my 08 C6 tuned by John at 21 Century Muscle cars this Thursday. At first, I didn't want nor expect any hp gain... but as the days passed by, I found my greed creeping up on me. I started thinking... ya know, my LS3 is probably going to dyno around 390 rwhp... how hard can it be to hit that magic number with a tune + something else cheap?

I know being obsessed with numbers is absolutely ridiculous, but I can't help it... I'm a numbers guy by profession...

So my question is this... are there any cheap, non invasive (warranty-wise) "mods" that I could do to hit 400 rwhp? I'm already getting a tune an a 160* stat. Is cutting the shroud or adding a K&N drop in replacement filter worth anything? Will either one of those tip off the dealer visually?

I understand the whole warranty thing and understand the risks I'm taking with a tune... I just don't want to get hassled if they see a cut shroud (it's harder to "see" a tune, ya know?).

Thanks.
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Old Sep 11, 2007 | 08:49 PM
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I believe the last time I was in TX, they haven't been posioned with California's 91. Therefore, your tuner should come close to 400. There is a thread with tuning results from RPM motors running around this section.

If your a few HP away, it might be a good time to consider a healthy diet and shed some pounds. Then use the restroom and hop in the vette.

I'm a stock fanatic and don't like modding (other than SS brake lines, brake ducts and brake pads).

Last edited by FLZ_Boy; Sep 11, 2007 at 08:53 PM.
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Old Sep 11, 2007 | 09:44 PM
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Originally Posted by clockworks
Hello,
I'm scheduled to have my 08 C6 tuned by John at 21 Century Muscle cars this Thursday. At first, I didn't want nor expect any hp gain... but as the days passed by, I found my greed creeping up on me. I started thinking... ya know, my LS3 is probably going to dyno around 390 rwhp... how hard can it be to hit that magic number with a tune + something else cheap?

I know being obsessed with numbers is absolutely ridiculous, but I can't help it... I'm a numbers guy by profession...

So my question is this... are there any cheap, non invasive (warranty-wise) "mods" that I could do to hit 400 rwhp? I'm already getting a tune an a 160* stat. Is cutting the shroud or adding a K&N drop in replacement filter worth anything? Will either one of those tip off the dealer visually?

I understand the whole warranty thing and understand the risks I'm taking with a tune... I just don't want to get hassled if they see a cut shroud (it's harder to "see" a tune, ya know?).

Thanks.
Take off the air cleaner and lean it out. Get your number then put a safe tune back in. The difference between 12.7 and 13.3 air fuel ratio is pretty dramatic from what I've seen on many dyno sheets.
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Old Sep 11, 2007 | 10:01 PM
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Add a big can of octane boost
along with 93 octane Chevron

And while you doing the stat,
add 2 bottles of water wetter
and replace some of the coolant
with just distilled water.

Last edited by FLY US; Sep 11, 2007 at 10:10 PM.
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Old Sep 11, 2007 | 10:13 PM
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The only numbers i would care about is what it can run at the 1/4 on an average 60ft(1.9 - 2.1). Dyno numbers don`t mean a thing as a dyno is just a tool for tuning Hope you hit your magic number
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Old Sep 11, 2007 | 11:02 PM
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Why not make it an even 500 rwhp?
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Old Sep 11, 2007 | 11:24 PM
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John and his staff are excellent. You picked a winner! I don't think you'll be disappointed. The weather is supposed to be somewhat cool on Thursday - good luck dude! Post back with your numbers.
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Old Sep 12, 2007 | 02:15 AM
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Originally Posted by FLZ_Boy
If your a few HP away, it might be a good time to consider a healthy diet and shed some pounds. Then use the restroom and hop in the vette.
I'm already a small 5'7" and 155 lbs... It's all rippling muscle btw.

Originally Posted by Joe_G
Take off the air cleaner and lean it out. Get your number then put a safe tune back in. The difference between 12.7 and 13.3 air fuel ratio is pretty dramatic from what I've seen on many dyno sheets.
Nod. All I need is one run with aggressive tuning to get my bragging rights numbers. I might ask him to do that, hehe.

Originally Posted by FLY US
And while you doing the stat,
add 2 bottles of water wetter
and replace some of the coolant
with just distilled water.
Ahh, good idea. Any retail stores carry Redline products? It's too late for me to order anything online.

Originally Posted by Tony B4
Dyno numbers don`t mean a thing as a dyno is just a tool for tuning Hope you hit your magic number
I am fully aware of this and completely admit that I'm looking for bragging rights numbers. The magic 400!

Originally Posted by cobra-info
Why not make it an even 500 rwhp?
I wish. If I had 4 grand to spend I'd do headers and a cam package! If I had more, I'd go for the gusto with a twin turbo. But I'm trying to be "responsible".

Originally Posted by jimmybobby
John and his staff are excellent. You picked a winner! I don't think you'll be disappointed.
That's what I hear! I'm excited... hope he doesn't get annoyed when I pummel him with tuning questions (I tried to tune my supercharged S197 Mustang GT and failed).

Originally Posted by jimmybobby
The weather is supposed to be somewhat cool on Thursday - good luck dude! Post back with your numbers.
Will do.
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