INFINITI I35 keeps pinging?

For pinging problem BG44K is the way to go. The I35 takes premium gas. A friend of mine did not know about this and was using regular gas for a while and got into this engine pinging stuff.

The service advisor at the local infiniti dealer after learning about the pinging & regular gas usage suggested a BG44K flush.
That took care of it.

Its a can you can buy, but not from all over town. Most infiniti dealers do stock them. I buy mine from a local service station. Pour a can into the tank once every 6000 miles (even though i use premium gas).

Last time I found some on ebay for 2 for $30 (BIN) + 5 shipping. Put one can in each of my cars.

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I took the car to the dealership on 11/28/2006 and on the work order it states:

Customer complaint: Hears a loud pinging noise as it takes off; worse going uphill. Ticking sound. Report on issue. Scan for codes.

Tech response: Verified condition detonation under heavy load condition can be caused by low octane fuel or excessive carbon build up.

I have gone through 2 bottles of BG-44K and one bottle of Techron. I also have put in 100 Octane GT Racing Fuel at $6 a gallon into this car and that fixes the pinging. However, once I go back to 91 octane it continues to ping again. I only use premium gas in my car and I'm currently using Shell's V-Power. I wish I could use the 100 octane racing fuel all the time but at $6 a gallon it is hellishly expensive. It's a shame too! I got almost 500 miles to the tank with the 100 octane racing fuel!

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If you have tried all above then MAF sensor and EGR valve needs to be inspected and replaced.

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In most cases if this MAF and EGR goes faulty then you get check engine light on ash.But sometimes this MAF ans EGR goes dirty or weak , and no check engine light comes.But getting this cleaned helps.