Do these Hondas have knock sensors?

[Alpine]

Need to find out if the following Honda models have knock sensors which will prevent pinging or take advantage of high octane fuels:

1999 1.6 Civic GLi
2001 2.0 CR-V
2004 3.0 Accord V6
2005 1.7 Civic GLi

Thanks.

[Alpine]

Anybody?

[Slow96GSR]

As far as I know all OBD systems have a knock sensor. I would have to look them up but I am 99.9% sure they have one.

[poid]

As far as I know all OBD systems have a knock sensor. I would have to look them up but I am 99.9% sure they have one.

No, not all OBD cars have knock sensors.

The later model ones listed above *should* have one, but thats a guess.

[EuroDude]

All those should have a knock sensor. Unless that 99 civic has an old school D series with a P28 ECU :p
It basically depends on the ECU. The P28 ECU doesn't have a knock sensor, which was used for early 92-95 D series engines

Here's some good info~
http://hondaswap.com/hybrid-eg-ek-dc/knock-sensor-37679/

[Alpine]

So let me get this straight...

If a car has a knock sensor but tuned to run on regular ol' 91 octane, putting 98 octane in it would be advantageous or not? Or would 95 octane be better?

[EuroDude]

Generally 95RON should provide a bit more power and efficiency.
95RON is more refined and has additives to keep the engine in good condition, so that alone is a good reason to use 95RON.
imo 98RON would be a waste of money for a 91RON tuned engine.

try one tank of 91RON, then a tank of 95RON using the same driving style, and calculate the efficiency difference. Its hard to judge the performance increase unless you do a dyno

[Limbo]

if its just you trying to make the car go faster by using higer octane fuel, just give it a try. I've noted even on cars tuned at 91 RON they seem to get better power with higher octane fuels. Just don't go backwards