Help with a 7531 and no2 progressive controller

MSD Digital Ignition Programming & Troubleshooting, Playing with Dots, Slew and other fun toys for traction challanged racers

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supernova
Posts: 2552
Joined: Sat Feb 02, 2008 7:35 pm
Location: Ft.Worth Tx

Re: Help with a 7531 and no2 progressive controller

#16 Post by supernova » Wed Jun 10, 2009 7:44 am

Ok, I must say that the 7531 box is an awesome box! I looked at all the surf that I have been ignoring in fear of screwing something up. What I found was lots of cool stuff to help make a car run hard. I did call in a friend to help show me the good stuff and how to use it.

John, I showed him your posts and although he knows this box very well you even showed him something to try on his car (outlaw topsportsman car). Thank you for your time and info. It has been inforative. Between your info and my buddy Kent I think we can get to the track and not look to stupid.
Rain is in the forcast so it may not happen today but we feel confident that the box won't kill us when we go. Kent is going with us to help.
Blackhoodmafia!!!! :mrgreen: :mrgreen:

1972 Nova SS
572 C.I. BBC

Best to date: 1/8
et: 5.28
mph: 134
new wt. 3340 lbs

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chpcamaro
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Location: socali

Re: Help with a 7531 and no2 progressive controller

#17 Post by chpcamaro » Wed Jun 10, 2009 8:40 pm

yup these boxes can do so much i have help several people setup there boxes and they get so shock they need no wire's for something's it can do lol
best to date N/A 8.91@153
psca westcoast heads up racing open comp
67 Camaro RS/SS
BBC Powerglide 4800 stall 4.11 29.5x10.5W
http://www.chpdragracing.com

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supernova
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Re: Help with a 7531 and no2 progressive controller

#18 Post by supernova » Thu Jun 11, 2009 5:22 am

Well, no running last night. RAIN 2 in. of it starting about 6:00 pm and rained all night. Looks like it will have to be Fri. night.
Blackhoodmafia!!!! :mrgreen: :mrgreen:

1972 Nova SS
572 C.I. BBC

Best to date: 1/8
et: 5.28
mph: 134
new wt. 3340 lbs

User avatar
supernova
Posts: 2552
Joined: Sat Feb 02, 2008 7:35 pm
Location: Ft.Worth Tx

Re: Help with a 7531 and no2 progressive controller

#19 Post by supernova » Sat Jun 13, 2009 12:23 pm

Rain closed the track again last night. Might try the track on sunday.
Blackhoodmafia!!!! :mrgreen: :mrgreen:

1972 Nova SS
572 C.I. BBC

Best to date: 1/8
et: 5.28
mph: 134
new wt. 3340 lbs

User avatar
supernova
Posts: 2552
Joined: Sat Feb 02, 2008 7:35 pm
Location: Ft.Worth Tx

Re: Help with a 7531 and no2 progressive controller

#20 Post by supernova » Sun Jun 14, 2009 10:34 pm

Didn't make to the track today. Will try this week.
Blackhoodmafia!!!! :mrgreen: :mrgreen:

1972 Nova SS
572 C.I. BBC

Best to date: 1/8
et: 5.28
mph: 134
new wt. 3340 lbs

User avatar
supernova
Posts: 2552
Joined: Sat Feb 02, 2008 7:35 pm
Location: Ft.Worth Tx

Re: Help with a 7531 and no2 progressive controller

#21 Post by supernova » Mon Jun 22, 2009 12:04 pm

We took David's camaro out saturday to do some testing. It took a couple hit to get the 7531 box set up. We had to dump 4 deg. more timing out of it than what we were going to take out for the nitrous to get it to hook. Played with bringing it back in and found the timimg could be brought back in quickly.

Now comes the nitrous. set the n2o p-c up with 20% at the hit on a 150 shot and brought it up to 100% in 1.000 sec. to start with. And bringing the timing back up to the n2o level. Boy that didn't work. Can you say tire fry'er. I was hot and the track was in bad shape. But we learned a lot about set up with the 7531 and p-controller for the n2o. We did take more timing out of it and found that that helped and were able to run down the track. The best with the 150 shot was a 6.32. I beat on a good night with good air and a much better track, AND better tuning, the car would dip to 6.00's We took a lot out of it to run on a crapy track and it showed.

This car will run in the same class my car will run in so the n2o rule is a .072 n2o jet limit applies. with what we know now I think we can get 5.80's low .90's out of it. It won't be the fastest car in the class but it can compete.
Blackhoodmafia!!!! :mrgreen: :mrgreen:

1972 Nova SS
572 C.I. BBC

Best to date: 1/8
et: 5.28
mph: 134
new wt. 3340 lbs

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John_Heard
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Re: Help with a 7531 and no2 progressive controller

#22 Post by John_Heard » Mon Jun 22, 2009 12:11 pm

Cool ... go to hear you guys were able to get out and get some testing done! Tough to hook right now with track temps skyhigh..

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supernova
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Joined: Sat Feb 02, 2008 7:35 pm
Location: Ft.Worth Tx

Re: Help with a 7531 and no2 progressive controller

#23 Post by supernova » Mon Jun 22, 2009 12:37 pm

John_Heard wrote:Cool ... go to hear you guys were able to get out and get some testing done! Tough to hook right now with track temps skyhigh..
Thank you for the help John.
I hope I can ask more questions later. I know I have just touched the surface of what this box can do. The info that you gave us was a huge help. Lots of fun playing with the 7531 and p-c for the n2o.


I think the track temp. was around 145 deg. so it was hot! The last pass was the best at about 7:30 pm. the track had cooled off some still hot though.
Blackhoodmafia!!!! :mrgreen: :mrgreen:

1972 Nova SS
572 C.I. BBC

Best to date: 1/8
et: 5.28
mph: 134
new wt. 3340 lbs

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