Can I use the Diablo to fix a Vararam Lean Surge on My Z06?
Does anyone know how to solve this problem? Evidently, the Vararam causes all sorts of issues on post-01 Z06s that are equipped with the screen-less MAF. Something to do with turbulent air and the fuel curve. The long and the short of it is my car now runs like crap and I feel that I've actually lost power. I know that I have to press the gas more to get it to go and I've driven it for at least 200 miles at highway speeds. I figure if the computer hasn't "learned" to adjust by now, it ain't going to.
So, before I send the Vararam back and get something else, does anyone have any idea how to program the computer to adjust for this problem using the Predator Diablo tuner? If so, HOW? Because, so far, the Diablo has proven to be even less useful than the Vararam.
I'm not real familiar with the Diablo but I don't believe it will do what needs to be done---You need to re-callibrate the entire MAF frequency table--Most handhelds do fueling adjustments globally and not always using the MAF table--You should log as much of the table as you can and hit as many frquencies as possible and then make the appropriate adjustments
Does anyone know how to solve this problem? Evidently, the Vararam causes all sorts of issues on post-01 Z06s that are equipped with the screen-less MAF. Something to do with turbulent air and the fuel curve. The long and the short of it is my car now runs like crap and I feel that I've actually lost power. I know that I have to press the gas more to get it to go and I've driven it for at least 200 miles at highway speeds. I figure if the computer hasn't "learned" to adjust by now, it ain't going to.
So, before I send the Vararam back and get something else, does anyone have any idea how to program the computer to adjust for this problem using the Predator Diablo tuner? If so, HOW? Because, so far, the Diablo has proven to be even less useful than the Vararam.
Honestly, like I said in our forums, I do not fully believe that this is a tune issue.
Most likely it would seem that the Vararam install has an issue somewhere.
I have driven several stock/heavily modified Vettes with the Vararam and never experienced any of the issues you are describing.
so far, the Diablo has proven to be even less useful than the Vararam.
How so? What have you tried to do with the Predator that it will not allow you to do?
Let me know, so I can try to help, rather than saying it is useless.
Several issues arise when you change air intake systems, the firmware built into the PCM is looking for a predetermined air flow and the PCM makes calculation based on that firmware. Your best bet would be to run a good 10-20 minute scan of your air flow and make the changes from those results. With the Diablo, Predator, etc, they have preprogrammed changes based on a stock system. Some of the handhelds can be returned to the manufacturer and re-tuned to you add on. Unless you know where the problems are in you tune it is like chasing ghosts to correct them. Some tuners, after several hundred different tunes, can almost predict what changes need to be made from you mods and can give you a tune you can live with.
Most of the problems are in the acceleration/deceleration and idle programs.
if you're having surging issues, then the problem needs to be repaired... not tuned out. Surging after engine intake work almost always points to an air leak... where something didn't get fully seated ot sealed.
BTW, the Predator (nor any other handheld type tuner) does not allow finite AFR adjustment; it's more of a generalized adjustment.
You'll need a dyno and a much more sophisticated tuning setup (like LS1Edit) to do that precise type of adjusting.
But first I'd double check the intake installation.
if you're having surging issues, then the problem needs to be repaired... not tuned out. Surging after engine intake work almost always points to an air leak... where something didn't get fully seated ot sealed.
BTW, the Predator (nor any other handheld type tuner) does not allow finite AFR adjustment; it's more of a generalized adjustment.
You'll need a dyno and a much more sophisticated tuning setup (like LS1Edit) to do that precise type of adjusting.
But first I'd double check the intake installation.
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Can I use the Diablo to fix a Vararam Lean Surge on My Z06?
