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Dragstrip and Launch Techniques Discussion 1/4 mile, 1/8 mile, launch discussions.

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Old 06-18-2009, 07:47 AM   #1
Matt TuneTime

 
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L99 Base line 1/4 mile times

Went to E-town last night and got 3 run's in

Bone stock
2.08 60ft 13.25 @ 106.21 mph
Tuned
2.00 60ft 12.95 @ 108.89 mph

It spun a hair on the last pass ..

Now it's time for our staged package's

Stay tuned ..

Thanks
Matt ..
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Old 06-18-2009, 07:50 AM   #2
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That's great Matt. Some more real world numbers. Good luck with your mods.
What was the temp out last night ?
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Old 06-18-2009, 08:03 AM   #3
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Quote:
Originally Posted by Matt TuneTime View Post
Went to E-town last night and got 3 run's in

Bone stock
2.08 60ft 13.25 @ 106.21 mph
Tuned
2.00 60ft 12.95 @ 108.89 mph

It spun a hair on the last pass ..

Now it's time for our staged package's

Stay tuned ..

Thanks
Matt ..
Who Tuned it?
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Old 06-18-2009, 09:56 AM   #4
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Who Tuned it?
We tuned it ...
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Old 06-18-2009, 10:10 AM   #5
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We tuned it ...
I am new at this. What things were changed in the tune and what scan tool did you use?
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Old 06-18-2009, 02:44 PM   #6
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Wow, great times.
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Old 06-19-2009, 06:37 AM   #7
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We tuned it ...
Matt, what was the DA on the stock and tuned times...

If it doesn't rain I'm running my L99 tonight!! Bone stock 500 miles on it...then mods begin.

Did you use HPtuners or Live? And if you did use HPtuners, are the bugs worked out in the beta' or do you think there is more left in the tune once HP gets the bugs ironed out?
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Old 06-19-2009, 08:39 AM   #8
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Originally Posted by 69 rs/ss View Post
I am new at this. What things were changed in the tune and what scan tool did you use?
We use HPT ...

Quote:
Originally Posted by pharmd View Post
Matt, what was the DA on the stock and tuned times...

If it doesn't rain I'm running my L99 tonight!! Bone stock 500 miles on it...then mods begin.

Did you use HPtuners or Live? And if you did use HPtuners, are the bugs worked out in the beta' or do you think there is more left in the tune once HP gets the bugs ironed out?
DA didn't look 65f / track elev +66ft / H 70% [ it rained for 3-4 min while I was waiting for last pass ] Baro was 29.89 ... As far a hpt after you write you have to unhook the battery ...{ I just disconnect the ECM then reconnect ...Same thing but I don't lose anything ... }
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Old 06-19-2009, 09:39 AM   #9
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I'm thinking they got rid of the TM and adjusted the shift speed/RPM.

WOW! These are great times. I may have put my foot in my mouth in another thread (won't be the first or last time, lol).

I can't remember off the top of my head, but was it you guys that were in a GMHTP issue several months ago with a G8? Regardless - great driving and great improvement
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Old 06-19-2009, 09:49 AM   #10
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I should get a stock run on L99 saturday night prior to mods.

Have you tried with and without tap shift. I'm wondering if tap shift will really gain anything on the track. With TM it's a bit slow and unpredictable...

Thoughts?
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Old 06-19-2009, 02:33 PM   #11
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Originally Posted by radz282003 View Post
I'm thinking they got rid of the TM and adjusted the shift speed/RPM.

WOW! These are great times. I may have put my foot in my mouth in another thread (won't be the first or last time, lol).

I can't remember off the top of my head, but was it you guys that were in a GMHTP issue several months ago with a G8? Regardless - great driving and great improvement
Yes Our G8 ...

Quote:
Originally Posted by mlee View Post
I should get a stock run on L99 saturday night prior to mods.

Have you tried with and without tap shift. I'm wondering if tap shift will really gain anything on the track. With TM it's a bit slow and unpredictable...

Thoughts?
Tap shift is a waste of time even with the tune , IMO the button's suck vs the C6..
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Old 06-19-2009, 02:37 PM   #12
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Yes Our G8 ...
AH!!! That was a good article. You POWNED that Mustang GT, lol. Did you dyno' this car too, or no?...
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Old 06-19-2009, 02:59 PM   #13
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AH!!! That was a good article. You POWNED that Mustang GT, lol. Did you dyno' this car too, or no?...
Yes we dynoed stock 329 hp and 338 tq ... LOL we have another shoot out with them again ...
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Old 06-19-2009, 03:28 PM   #14
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Quote:
Originally Posted by Matt TuneTime View Post
Went to E-town last night and got 3 run's in

Bone stock
2.08 60ft 13.25 @ 106.21 mph
Tuned
2.00 60ft 12.95 @ 108.89 mph

It spun a hair on the last pass ..

Now it's time for our staged package's

Stay tuned ..

Thanks
Matt ..
your garauge is full of sex!! btw!!!!
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Old 06-19-2009, 03:55 PM   #15
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Sweet deal Matt, I was wondering when you were gonne get her to the track. The weather hasn't been all that great lately. Good times, can't wait to see what's in store.
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Old 06-19-2009, 06:06 PM   #16
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Quote:
Originally Posted by Matt TuneTime View Post
Tap shift is a waste of time even with the tune , IMO the button's suck vs the C6..
Pretty much what I figured. Guess I'll just put it in competition mode and let her rip... I want a good baseline before mods...
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Old 06-21-2009, 07:11 AM   #17
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Quote:
Originally Posted by Matt TuneTime View Post
Went to E-town last night and got 3 run's in

Bone stock
2.08 60ft 13.25 @ 106.21 mph
Tuned
2.00 60ft 12.95 @ 108.89 mph

It spun a hair on the last pass ..

Now it's time for our staged package's

Stay tuned ..

Thanks
Matt ..
Matt were your times on the stock P Zero's or on DR?
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Old 06-22-2009, 10:58 AM   #18
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Matt were your times on the stock P Zero's or on DR?
Stock tire they work well ... I bet 1.80 60ft is possible .
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Old 06-22-2009, 11:07 AM   #19
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Stock tire they work well ... I bet 1.80 60ft is possible .
Thanks Matt... The L99s and LS3s running out there in the Texas heat were struggling to break the 14 mark. 13.8s at 104.
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Old 06-29-2009, 02:29 AM   #20
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1.80 with stock tires, really? I didn't think stock tires on any car could manage that.
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Old 06-29-2009, 07:07 AM   #21
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1.80 with stock tires, really? I didn't think stock tires on any car could manage that.
I pulled 1.66 sec 60' times in my STi with stock tires. But that probably doesn't count (awd).

1.8x is pretty rare for a stock tired rwd car. But it does happen. I've pulled
1.9x sec 60' times in my GTO with stock tires.
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Old 06-29-2009, 08:00 AM   #22
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Congrats on those good runs...stk and with just a tune..
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Old 06-29-2009, 09:58 AM   #23
Matt TuneTime

 
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Originally Posted by SubSolar View Post
1.80 with stock tires, really? I didn't think stock tires on any car could manage that.
Quote:
Originally Posted by SGOS252382 View Post
I pulled 1.66 sec 60' times in my STi with stock tires. But that probably doesn't count (awd).

1.8x is pretty rare for a stock tired rwd car. But it does happen. I've pulled
1.9x sec 60' times in my GTO with stock tires.
I have gone 1.80-1.88 on 19's Kumho spt's in my G8 on a bunch of 11.60-11.80 passes ..
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Old 06-29-2009, 10:08 AM   #24
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So, the Kumho's are the stock G8 tires?

Would there be a drop in ET if one got a set of rear tires and Nittos on a slightly modified L99? I plan on just doing intake, exhaust and tune at first when I get my L99 and wondering if I tires will help at the track.
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