Last weekend it was over 90 degrees and i had filled up at a different gas station, shell and chevron combined. Well i was driving the car hard the whole weekend on my way to the beach and i noticed a lot of pinging throughout the trip. Anything above 5500 rpm the car pinged like there is no tomorrow. Sometimes i thought engine was going to explode or somesh!t. Well sunday i filled up from the regular place that i usually fill up, which is a local 76 gas station and the pinging completely went away. I tried both maps (stock and performance map) and there was absolutely no pinging. It was about the same temp on Sunday and I kept flooring it and could not hear a single misfire.

How different can the gas be if both are 91 octane, apparently a lot different. Just wanted to share and hear ur opinions about this.

 

That's weird, I have been using Chevron the whole 3 years that I've had my car (Shell once in a blue moon) and have not experienced any pinging.

 

I dont think it has to do with the brand, i think it was just those two particular gas stations (shevron and the Shell). Maybe because of these gasprices they mixed other crap with the gas?

 

maybe their '91' wasn't really 91.

 

My G will ping badly with that Shell V-power crap. I use BP because they offer 92 in Kansas City where every other station sells 91. When I lived in ATL I was getting 93/94 and the car really did like it. Back to the point, there is something wrong with that V-power stuff and our engines. It's not a good mix.

 

^im glad im not the only one. Since i got this car over 3 years ago it only has been 90% of the time it has been filled up in that particular 76 gas station.

 

Strange...I just filled up this week on shell V-power gas and my car has run fine, and I have taken it above 5500 rpm plenty....=)

 

Can some explain to me what pinging would actually sound like???? I am curious as to what this PINGING is?????

 

It literally sounds like little metal *****/pellets being shaken around inside a tin can.

 

sounds like a metal particles rattling in ur exhaust but it comes from the the engine.

 

as i said i am 90% sure it had to do with that particular gas station.

 

Yeah I would imagine it's that gas station... I always fill up with 93 octane V-Power here and I've never had a problem.

 

could it have just been a bad batch of gas?? That happend to me one time with my Turbo honda, got a bad batch of gas and had a ton of detonation going on.

 

Sometimes those storage tanks leak, dip sticks dirty all the time, using diesel dipstick for regular gas and in return all types of **** find its way inside so its that station!

 

gas stations can be independently owned/operated with the name of a major gas co and not use their gas.... ive seen this alot in CA where i live and i avoid those stations.