C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

96 vs 95 ANY TECHNICAL ADVANTAGE?

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Old Jan 29, 2005 | 11:51 PM
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Default 96 vs 95 ANY TECHNICAL ADVANTAGE?

In comparing a 95 A4 CPE to a 96 A4 CPE are there any technical, reliability or performance differences?

I understand that they both come with the upgraded (vacuum ) opti-spark system so I was just wondering if there is any advantage to buying a 96 over a 95 with the same miles on them.

(no interest in CE )

Thanks for the education
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Old Jan 29, 2005 | 11:54 PM
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96 is ODB2 which makes emissions tests easier around these parts.
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Old Jan 30, 2005 | 12:11 AM
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Originally Posted by scorp508
96 is ODB2 which makes emissions tests easier around these parts.
Ah, but around HERE, my OBDI '95 exempts me from it completely. Visual only.
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Old Jan 30, 2005 | 01:31 AM
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The fact that it's a 95 would not exempt me here in WA.

How is it that OBDII makes it easier to pass an emmisions test?
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Old Jan 30, 2005 | 01:35 AM
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Originally Posted by Mr. Peabody
The fact that it's a 95 would not exempt me here in WA.

How is it that OBDII makes it easier to pass an emmisions test?

All the do at the testing station is to plug into the cars diagnostic port. If there are no active DTC codes the car passes. Thats how a lot of these guys with LS1 engines squeak by emissions tests with big cams. They just use their tuning software and turn off the DTCs. There are no sniffer tests or treadmill tests as with the earlier OBD1 cars.
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Old Jan 30, 2005 | 03:07 AM
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Originally Posted by tjwong
All the do at the testing station is to plug into the cars diagnostic port. If there are no active DTC codes the car passes. Thats how a lot of these guys with LS1 engines squeak by emissions tests with big cams. They just use their tuning software and turn off the DTCs. There are no sniffer tests or treadmill tests as with the earlier OBD1 cars.
I had a 383 LT4 car pass here in AZ with a monster hydrolic 242/252 duration cam .56x/.56x lift with 110 LSA because of the OBDII test...that never would have passed if they ran a sniffer!
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Old Jan 30, 2005 | 09:32 AM
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The 96 has a crank position sensor mounted in the timing cover.
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Old Jan 30, 2005 | 09:58 AM
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From: Good health is merely the slowest possible rate at which one can die
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Originally Posted by Mr. Peabody
In comparing a 95 A4 CPE to a 96 A4 CPE are there any technical, reliability or performance differences?

I understand that they both come with the upgraded (vacuum ) opti-spark system so I was just wondering if there is any advantage to buying a 96 over a 95 with the same miles on them.

(no interest in CE )

Thanks for the education
So really, to answer your original question, I'd say that there is nothing of any significance that makes either any better than the other in the areas you mentioned. Good luck with your choice, either should make you a great car!
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Old Jan 30, 2005 | 11:49 PM
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Thank you much
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Old Jan 31, 2005 | 01:36 PM
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Originally Posted by tjwong
All the do at the testing station is to plug into the cars diagnostic port. ...There are no sniffer tests or treadmill tests as with the earlier OBD1 cars.
In San Diego, my '96 had to go on the rollers with a sniffer up its tailpipe.
Maybe the kids at the smog station didn't know what they were doing ...but I wouldn't think so; California takes it's emissions testing pretty seriously.

Larry
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