Hey Guys, I'm getting engine pinging when I'm accelerating ( merging on to the freeway, etc.. ). If I have the air condition on I can hear it more when I accelerate. It's not consistent but sometimes I can hear it and other times I don't. It sounds similar to little pebbles hitting your window or rocks in a tin can.

I know pinging is not good and was advised by tons of people to baby it when I drive which I've been doing. I'm located in Southern California and I use 91 octane fuel.

Here is some background on my car.

2006 mini cooper s - Automatic with 61,000 miles, I've had my 60k service done as well.

Mods:

• 17% way motor works pulley (may 2010)
• jcw belt (may 2010)
• jcw exhaust w/ straight pipe
• jcw airbox with a mini madness filter
• ECU and dyno tune from Mynes in Lake Forest, CA (may 2010)
• NGK 1 step colder spark plugs (september 2010)
• Brand new OEM coil pack with wires (september 2010)
• Brand new fuel pump installed today.
• Brand new fuel filter

Stock parts:

• Stock fuel injectors
• Stock crank

Mynes adjusted my timing back to stock for the fuel injectors.. still pinging under high RPMS.

Would my issue be related to my tune and perhaps my fuel injectors aren't big enough to handle the tune set up, correct me if I'm wrong but aren't the stock COOPER S injectors 330cc.

Also related I was advised by Mynes that I needed bigger injectors and a retune to correct the engine pinging but I wanted to make sure the smaller easier fixes are fine before I do that since that is a lot of money and I've already had it tuned to begin with.

Any thoughts and expert advice would be much appreciated!

 

On a boosted engine, if you dont get enough fuel you will ping, plain and simple.

 

Makes complete sense. I've researched and seen some of those things can cause the engine to ping. Looks like I'll have to get bigger injectors and a retune to correct the pinging right?

Thanks for the input as well

 

Jan @ RMW has fixed my problem/ So today is a good day! After jumping through numerous hoops my engine pinging has been resolved... RMW worked on my car today in the blistering heat in Southern California.

I had a RMW cam installed, 440 injectors and a street tune based off my last ecu reading. The camshaft definitely makes a difference holy shii... I still need to get it on the dyno to tune it, what I currently have now is a lot more safer and no pinging what so ever.

Oh on a side note. I got a fix it ticket for tinted tail lights and side markers in Irvine. I've had them on for about a year. GG.