Bob,
Detonation is the bain of high performance engines. Depending on how the VW
ECU handles the results from the knowck sensor, it may or may not be a
problem. My question is, "Can you hear any pinging or knowcking,
particularly when you are lugging the engine on an uphill grade?" If you
can, then there is a potential problem. If you can't hear anything like
that, my guess is that either the fuel you are running has plenty of octane
for the job or the ECU is compensating properly. In either case, you shold
be OK>
Joe
----- Original Message -----
From: "Bob Danielson" <75TR6@tr6.danielsonfamily.org>
To: <triumphs@autox.team.net>
Sent: Monday, April 24, 2006 10:12 AM
Subject: [TR] Non LBC.....Octane Impact
> Sorry for the non LBC content but I figure this list will have the answer
to
> my question.
>
> I've got a 2004 VW Passat 1.8T that "requires per VW" premium gas. Last
year
> when Katrina pushed gas over $3.00 a gallon I tried running the car on
> regular 87 octane and saw no change in performance. I know that today's
cars
> have anti-knock sensors that (I think) advances/retards timing to prevent
> knocking at the expense of performance. Since then I've gone between
premium
> and regular and can see no difference. We just got back from a week of
baby
> sitting the grandkids and I averaged 32 mpg at 65 mph for the 700 mile
round
> trip, all run on regular 87 octane.
>
> My question is: is there any long term impact from using regular gas other
> then more $$$ in my pocket?
>
> Thanks
>
> Bob Danielson
> 1975 TR6
> http://tr6.danielsonfamily.org
=== This list supported in part by The Vintage Triumph Register
=== http://www.vtr.org
|