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Most C5 Dyno Graphs have...

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Old 09-19-2006, 09:53 PM
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I've only seen a weird dip on one C5. After trying several things to make it go away, we got these results by unbolting the over the axle pipes and mufflers. It was a 99 heads/cam/headers car with a Z06 exhaust.
All the other C5s I've tuned had a normal graph.

Old 09-20-2006, 08:10 PM
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still wondering....anyone have a clue?
Old 09-20-2006, 09:48 PM
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2xls1 could be on to somthing with the exhaust.
Old 09-21-2006, 01:15 AM
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my graph looked just like 2xls1's. i had a big dip in my graph in the torque when i had the 240cc runner heads on my stock bottom end. too big of ports cost me massive low end torque

Last edited by pdd; 09-21-2006 at 01:56 AM.
Old 09-21-2006, 05:18 AM
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Does it have something to do with a Electronic Throttle Control Table, is it under diagnostics?
Old 09-22-2006, 08:27 PM
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I'm guessing it has something to do with the change from VE dominated airflow calculations to MAF dominated ones.
Old 09-24-2006, 06:42 PM
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TTT..... I'd really like to know
Old 09-24-2006, 09:38 PM
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Burst retard? I had to tune this out with the blower to keep my timing up.

Only other thing I can think of is expected airflow through the ETC, but that just sends the car into limp mode if violated (or so I believe).

Last edited by Draco; 09-25-2006 at 08:55 AM.
Old 09-24-2006, 10:39 PM
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so whats the trick?, i dont even have a vette but this is kind of interesting
Old 09-28-2006, 01:07 PM
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Guess the LS1tech community will never know.......
Old 09-28-2006, 06:19 PM
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I think we've done enough guessing Slowhawk. Spill the beans.
Old 10-02-2006, 07:59 PM
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Sorry this has caught my interest. My last tune was kind of funny because with the blower and the cam I maxed out my MAF and the tuner had to do a "speed density tune." Without this tune after the MAF maxed out it would go way lean. And unlike the F-body my vette has the 5wire MAF/temp sensor all in one. So I had to clip the other 3 wires and he took them out of the program. Everything seems fine now.
Old 10-03-2006, 10:46 PM
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Mine has allways had it too... I'm with Huff on this one, big ears...
Dave
Old 11-03-2006, 08:25 AM
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Originally Posted by Slowhawk
No,thats just tuning being screwy on the A/F.The blue graph is a NA run,red is blower.

It's not an A/F problem.The Vette's do something different
Hi Slowhawk,

Is the solution in the tuning for the ZO6 or is it about some modifications on peripherals ??

Christian
Old 11-03-2006, 10:56 AM
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I would like to know as well....
Old 11-05-2006, 07:59 PM
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I'm drooling to know the answer do'nt force me to pm you to death??!!
Old 11-14-2006, 08:11 PM
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Will the secret stay for ever.....
Old 11-14-2006, 09:41 PM
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<------Blue *****!!
Old 11-15-2006, 09:59 PM
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he doesnt even know just thinks he dose. I'm calling you out Mr know it all if you don't answer than we all know you SUCK and tell lies!! if you answer than your cool got it sucker.
Old 11-15-2006, 10:20 PM
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Originally Posted by S99TA
he doesnt even know just thinks he dose. I'm calling you out Mr know it all if you don't answer than we all know you SUCK and tell lies!! if you answer than your cool got it sucker.
He's tuned more cars then you can count



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