Pinging Engine? Needs A Tune?

[Ricos]

Hi guys,

firstly ill start by explaining my set up. It a r33 gts-t pritty much stock except 3" turbo back exhaust, stock air filter, FMIC, bleed valve. (runs 10~11psi)

i had my car tuned (not dyno'd) about 6-8months ago but at the time of the tune i had only the exhaust, boost valve, and an aftermarket pod filter on. Since then i have put on the FMIC and when i put the FMIC on the boost shot up (as it would) so i downed it back to 10~11. also too, when i put the FMIC on i chucked the original filter box back on.

Now i noticed some pinging, i firstly suspected it was the fuel i am using, i usualy run it with mobile 8000 (98r). but this week i chucked the standard mobile unleaded fuel in it instead. Now im going to wait till my tanks empty and then put 8000 back in it and see if it pings still.

but my question is, if it still pings, would it be possible it is the tune i have on the car as it doesnt suit/match with the current stuff i have on my car (as it was previously tuned without FMIC and a pod on it)

Will i be able to get this pinging out with a dyno tune if it doesnt appear to make a difference with the fuel change?

Thanks guys

[Guilt-Toy]

For starters NEVER put 91 octane fuel in your car EVER again. It is the main reason why its pinging. When you fill up with 98 again it should not ping if it didnt ping before. 7 octane points makes a pretty big difference.

Hi guys,

firstly ill start by explaining my set up. It a r33 gts-t pritty much stock except 3" turbo back exhaust, stock air filter, FMIC, bleed valve. (runs 10~11psi)

i had my car tuned (not dyno'd) about 6-8months ago but at the time of the tune i had only the exhaust, boost valve, and an aftermarket pod filter on. Since then i have put on the FMIC and when i put the FMIC on the boost shot up (as it would) so i downed it back to 10~11. also too, when i put the FMIC on i chucked the original filter box back on.

Now i noticed some pinging, i firstly suspected it was the fuel i am using, i usualy run it with mobile 8000 (98r). but this week i chucked the standard mobile unleaded fuel in it instead. Now im going to wait till my tanks empty and then put 8000 back in it and see if it pings still.

but my question is, if it still pings, would it be possible it is the tune i have on the car as it doesnt suit/match with the current stuff i have on my car (as it was previously tuned without FMIC and a pod on it)

Will i be able to get this pinging out with a dyno tune if it doesnt appear to make a difference with the fuel change?

Thanks guys