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Old 10-24-2013, 03:34 PM
  #21  
Frans96ss
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Originally Posted by racerns
I believe that is a result of being DI, the combustion is more efficient and allows you to run leaner. Knowing how GM tunes their cars from the factory, I would bet 12.0:1 is very safe for DI.
Correct .. a DI car can run leaner
Old 10-24-2013, 05:33 PM
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peter pan
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Originally Posted by Smoove
nice.
Really awesome
Old 10-25-2013, 03:54 AM
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walhan_qtr
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Originally Posted by Slow Vette
good to know 12:1 is now considered rich for these cars thanks
on a DI motor yes. "some" LS tuners are freakin out with this DI deal since they run leaner than what they are used to.

Congrats Fran good job! whats the plans for the car so far?
Old 10-26-2013, 09:52 AM
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CFHay
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How big of a shot here?
Old 10-26-2013, 10:20 AM
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Snorman
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Originally Posted by CFHay
How big of a shot here?
What are you talking about?
S.
Old 10-26-2013, 10:38 AM
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yell03
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Nice run!!!

The C7s are beasts.

I never would have thought they would be this good stock.
Old 10-26-2013, 10:45 AM
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Frans96ss
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Added our next round of mods. We installed a Nitrous outlet plate system. Other than that the car is bone stock. Here is the dyno graph on a 50 and 100 shot. This is with only around 700psi Bottle pressure too. We just wanted to see how the LT1 motor liked it... and it LOVED it... Look at that torque!!!!... I did a motor pull also with 3 degrees of timing taken out of the factory tune.



This run is on the 100 shot still with low pressure in the bottle. Stock tires and everything else bone stock



We will have new times in a couple days.
Old 10-27-2013, 12:41 AM
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walhan_qtr
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how are you getting your fuel for the nitrous Fran? a dedicated fuel cell?? if yes any pics?

great job!
Old 10-27-2013, 08:45 AM
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Why not get the bottle pressure up to 950 psi?
Old 10-30-2013, 01:19 PM
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Just finished installing our American Racing Headers yesterday and got it on the dyno. They showed GREAT Gains.

Here is a dyno graph of the car stock with a tune then adding headers.



It picked up 30rwtq from 3800-5k and about 20 or so after that.


Here is the graph from the bone stock pulls to Headers/Tune. Picked up 50rwtq from 3800-5400rwhp.... Thats HUGE improvements.

Old 10-30-2013, 01:31 PM
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Lets see a dyno with headers and the 100 shot.
Old 10-30-2013, 03:02 PM
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R_Miller@DRM
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Nice!! I cannot wait to get my hands on one of those
Old 10-31-2013, 10:39 PM
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Car went 11.16 @ 129 this eve at mir. 10's most likely tomorrow
Old 11-01-2013, 12:02 AM
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Old 11-01-2013, 06:21 AM
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129 mph with only headers! impressive
Old 11-01-2013, 07:13 AM
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Originally Posted by racerns
I believe that is a result of being DI, the combustion is more efficient and allows you to run leaner. Knowing how GM tunes their cars from the factory, I would bet 12.0:1 is very safe for DI.
I've read that stoic is closer to 14.1:1 now with the 10% ethanol in todays pump gas.....vs. the standard 14.7:1 afr stoic. I think I read that on Wikipedia, not 100% certain but may partially explain GM's afr along with the DI component of the equation.

http://www.hptuners.com/forum/showth...toich-for-E-10

http://www.innovatemotorsports.com/resources/news6.php

Last edited by NemesisC5; 11-01-2013 at 07:20 AM.
Old 11-09-2013, 07:24 AM
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Went to the track again last night with some more seat time and got a better pass. This is the highest MPH of any C7 so far.

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Old 11-09-2013, 04:35 PM
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Originally Posted by Frans96ss
Went to the track again last night with some more seat time and got a better pass. This is the highest MPH of any C7 so far.
Great time, this is headers/tune/100 shot?
Old 11-10-2013, 02:10 PM
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Made it to the track yesterday with some better prep and some more seat time in the car. Made a couple of passes that i was happy with. Mods are ARH Headers, Tune, and 150 shot on a nitrous outlet plate kit. BFG drag radials. This is the ONLY mods.

Here is the time slips from my best 2 passes of the day.



The pass on the right my bottle was on the empty side. Thats why the MPH is down.. The 60 on that *** was killer and would have been a 10.35-45 if the bottle was full. Headed back next week for some more passes.

Old 11-10-2013, 11:41 PM
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Congrats Fran. Keep up the great work!

Nick
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