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Old 07-13-2006, 10:34 PM   #1
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Default EGR valve removal and scanner questions

hey guys,
2 questions-

what will happen if i remove my EGR valve in a supercharged series II 96 bonneville?

what type of scanner do i need to use to find out why my traction and ABS lights are on?

thanks-

Brian
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Old 07-13-2006, 10:45 PM   #2
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Most scanners will not read ABS info on your car. I recently found out that GM still used ALDL modules and unless you have a tech2.. it probably can't read them.
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Old 07-13-2006, 10:46 PM   #3
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Scanner for traction and ABS is called $80-$100 an hour at the dealer. Our scantools won't read those codes.

Deleting your EGR will hurt your gas mileage and help cause knock. Hurts performance and efficiency. You MIGHT consider doing it when you install an intercooler.

EGR valves actually help keep combustion temps down.
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Old 07-13-2006, 11:50 PM   #4
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could'nt he just pipe cool outside air in the egr valve and use a block off plate?
engine bay air would be a hell of a lot cleaner than exhaust gas and cooler too.
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Old 07-14-2006, 12:50 AM   #5
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For what gain? The EGR valve works by DISPLACING a small amount of oxygen depending on what the PCM thinks it needs. That'* how it keeps combustion temps down and helps prevent burnt valves. Introdcucing fresh air is the same thing as inducing a vacuum leak. It'* unmetered air that the MAF doesn't see, running you lean and increasig combustion and exhaust temps. That'* actually the LAST thing you want to do UNLESS you have an intercooler.

At that point, you need a PCM to delete the EGR code.
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Old 07-14-2006, 02:02 AM   #6
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your point about the heat removal is right but that "unmetered" air is the same amount that the PCM would have let in anyway so I dont see how that could be an issue
what about this is it bs?
http://zzperformance.com/grand_prix/...ts1.php?id=229
the intake get INCREDIBLY dirty including the entire supercharger and everything else. I don't see how this doesnt hurt performance
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Old 07-14-2006, 04:45 AM   #7
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Your link says that gas mileage will suffer by 1 mpg. At $3.25 a gallon for fuel, I respectfully say - H*** NO! Just listen to what willwren says, he has never been wrong on any of these issues that I know of and seems to be very smart.
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Old 07-14-2006, 08:32 AM   #8
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Quote:
Originally Posted by 1337ssei
your point about the heat removal is right but that "unmetered" air is the same amount that the PCM would have let in anyway so I dont see how that could be an issue
what about this is it bs?
http://zzperformance.com/grand_prix/...ts1.php?id=229
the intake get INCREDIBLY dirty including the entire supercharger and everything else. I don't see how this doesnt hurt performance
1337, the EGR doesn't normally add AIR. It'* exhaust gasses that don't burn. AIR is combustible. That'* why it amounts to a vacuum leak and upsets AFR.

Also keep in mind the mild coating of EGR/PCV film on your rotors and case can actually have the effect of increasing the efficiency of the supercharger slightly.

ZZP sells the EGR kit primarily for the intercooled cars so the intercooler core doesn't get plugged up. A short burst of water injection would clean that right up though.

In a nutshell, exhaust gasses aren't combustible. That'* why they're used. Air is.
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