Personal best today at MIR
Thread Starter
Intermediate
Joined: Mar 2006
Posts: 39
Likes: 1
From: Charlotte Hall Maryland
Personal best today at MIR
05 c6 z51 6speed Made 5 passes today slowest being 11.59 121.63 and a three very consistent runs. 11.22 11.23 11.20 124.36. My 60' times were 1.515 1.507 1.466 1.438 . I am stiil struggling with my shift points which is making my 1/8 miles et inconsistent.
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 265
From: St. Louis, MO
St. Jude Donor '08
Dude that two step is sittin and gittin!!!
Man that thing is launching hard!!!
You sharpen that shifting a little and you are in the 10's.
p.s. Not bad for only 10 runs in the car....!
Man that thing is launching hard!!!
You sharpen that shifting a little and you are in the 10's.
p.s. Not bad for only 10 runs in the car....!
Burning Brakes
Joined: Oct 2005
Posts: 791
Likes: 2
From: Stafford Virginia
WOW, I wish I could pull 60's like that... I love that 2 step, I know what my next mod is!!! Great runs, I should have mine back together by next week, we ought to get together and do some heads up runs, it would be a great race... 
Last edited by Isaiah48; Nov 10, 2009 at 07:56 AM.
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Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 265
From: St. Louis, MO
St. Jude Donor '08
I spoke to Arnold...2700....that's what amazes me. If I launch my car at 2700 it bogs like nobody's business. I have to launch at 5000+ and cannot let it bog below 4000 to get a decent 60 foot. But Arnold has a smaller cam and much better heads than me. I think he dyno'd at 490/460 or something like that.
Melting Slicks
Joined: Nov 2006
Posts: 2,865
Likes: 2
From: Dallas Tx
I spoke to Arnold...2700....that's what amazes me. If I launch my car at 2700 it bogs like nobody's business. I have to launch at 5000+ and cannot let it bog below 4000 to get a decent 60 foot. But Arnold has a smaller cam and much better heads than me. I think he dyno'd at 490/460 or something like that.
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 265
From: St. Louis, MO
St. Jude Donor '08
With my 1.5's I'm .875 seconds from tire movement to WOT, feathering the clutch & gas the whole time to maintain traction. A good stalled auto is < .400 from tire movement to WOT. They tend to shift at .500, us manuals are .250, but it's hard to recover from the delay on the launch.
I'd like to see someone else try a 2 step to see if they can reproduce Arnold's results. He's got a really dialed in setup with that smaller cam and those 205 heads...he's got more low end tq than you and I, but probably 40-50 ft lbs at 2700.
Arnold can you email me a dyno sheet so I can post it up? Even better if you've got the .drf file from your dyno as I can overlay yours and mine.
I'd like to see someone else try a 2 step to see if they can reproduce Arnold's results. He's got a really dialed in setup with that smaller cam and those 205 heads...he's got more low end tq than you and I, but probably 40-50 ft lbs at 2700.
Arnold can you email me a dyno sheet so I can post it up? Even better if you've got the .drf file from your dyno as I can overlay yours and mine.
Melting Slicks
Joined: Nov 2006
Posts: 2,865
Likes: 2
From: Dallas Tx
With my 1.5's I'm .875 seconds from tire movement to WOT, feathering the clutch & gas the whole time to maintain traction. A good stalled auto is < .400 from tire movement to WOT. They tend to shift at .500, us manuals are .250, but it's hard to recover from the delay on the launch.
I'd like to see someone else try a 2 step to see if they can reproduce Arnold's results. He's got a really dialed in setup with that smaller cam and those 205 heads...he's got more low end tq than you and I, but probably 40-50 ft lbs at 2700.
Arnold can you email me a dyno sheet so I can post it up? Even better if you've got the .drf file from your dyno as I can overlay yours and mine.
I'd like to see someone else try a 2 step to see if they can reproduce Arnold's results. He's got a really dialed in setup with that smaller cam and those 205 heads...he's got more low end tq than you and I, but probably 40-50 ft lbs at 2700.
Arnold can you email me a dyno sheet so I can post it up? Even better if you've got the .drf file from your dyno as I can overlay yours and mine.
Le Mans Master
Joined: Oct 2001
Posts: 5,577
Likes: 3
From: Southern Maryland Maryland
When Arnold and I talked, I thought 2700 would be a good place to start. I was hoping he went 1.6x and than we could creep up on the launch RPM like we do on my car. I was wrong.
Thread Starter
Intermediate
Joined: Mar 2006
Posts: 39
Likes: 1
From: Charlotte Hall Maryland
Joe I will talk to Phil about the Dyno Sheet he is the one that has tune my car and helped me decied my mods and install alot of my parts special thanks goes to Phil97SVT.
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 265
From: St. Louis, MO
St. Jude Donor '08
It is. I spoke to Arnold on the phone the other night about this, and I'm more of a forum hound than he is in case people are wondering why I'm answering for him!
Arnold perhaps you can describe for us how the 2 step installs and how it works. I heard it'll eat up your cats if you have them, do you have cats or have you heard this?
Arnold perhaps you can describe for us how the 2 step installs and how it works. I heard it'll eat up your cats if you have them, do you have cats or have you heard this?
Melting Slicks
Joined: Nov 2006
Posts: 2,865
Likes: 2
From: Dallas Tx
It is. I spoke to Arnold on the phone the other night about this, and I'm more of a forum hound than he is in case people are wondering why I'm answering for him!
Arnold perhaps you can describe for us how the 2 step installs and how it works. I heard it'll eat up your cats if you have them, do you have cats or have you heard this?
Arnold perhaps you can describe for us how the 2 step installs and how it works. I heard it'll eat up your cats if you have them, do you have cats or have you heard this?
AMP Racing
Joined: Aug 2006
Posts: 10,757
Likes: 589
From: Washington TWP NJ
2023 C5 of the Year Finalist - Modified
2017 C5 of Year Finalist
St. Jude Donor '09-'10-'11-'12
This is my understanding of how it works.
The two-step cuts timing but not fuel. So while you are at your launch rpm, you are pouring unburned fuel into the exhaust. This is what eats up your cats.
And IMHO, a two-step doesn't help your 60. A lot of practice will help it. A two-step is good for consistancy but not necessarily ET.
The two-step cuts timing but not fuel. So while you are at your launch rpm, you are pouring unburned fuel into the exhaust. This is what eats up your cats.
And IMHO, a two-step doesn't help your 60. A lot of practice will help it. A two-step is good for consistancy but not necessarily ET.